Fix Opus decoding and RX jitter buffer on Android 16 (v1.0.5)

- Monitor button between callsign and TG selector
- On: reconnects with TG_MONITOR for all switch-list groups,
  status shows 'Мониторинг: TG...', PTT disabled
- Talker display shows callsign and its TG
- Off: back to normal talk mode

app/build.gradle.kts

@@ -11,8 +11,8 @@ android {
         applicationId = "ru.ua1zbe.svxremote"
         minSdk = 26
         targetSdk = 34
-        versionCode = 2
-        versionName = "1.0.0"
+        versionCode = 6
+        versionName = "1.0.4"
     }
 
     buildTypes {

app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application
         android:label="@string/app_name"
@@ -25,14 +26,28 @@
             android:label="@string/settings_title" />
 
         <activity
-            android:name=".MainActivity"
+            android:name=".SplashActivity"
             android:exported="true"
+            android:launchMode="singleTop"
             android:screenOrientation="portrait"
-            android:configChanges="orientation|screenSize|keyboardHidden">
+            android:theme="@style/Theme.SvxRemote">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="false"
+            android:launchMode="singleTask"
+            android:screenOrientation="portrait"
+            android:configChanges="orientation|screenSize|keyboardHidden" />
+
+        <provider
+            android:name=".UpdateFileProvider"
+            android:authorities="ru.ua1zbe.svxremote.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true" />
     </application>
 </manifest>

app/src/main/java/ru/ua1zbe/svxremote/MainActivity.kt

@@ -2,27 +2,36 @@ package ru.ua1zbe.svxremote
 
 import android.Manifest
 import android.app.Activity
+import android.app.AlertDialog
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.ServiceConnection
 import android.content.pm.PackageManager
+import android.net.Uri
+import android.content.res.ColorStateList
+import android.graphics.Color
+import android.graphics.PixelFormat
 import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.os.IBinder
 import android.os.Looper
+import android.provider.Settings
 import android.util.Log
+import android.view.Gravity
+import android.view.View
 import android.view.WindowManager
-import android.widget.Button
 import android.widget.ImageButton
+import android.widget.LinearLayout
+import android.widget.ProgressBar
 import android.widget.TextView
 import android.widget.Toast
+import java.io.File
 import ru.ua1zbe.svxremote.prefs.ConnectionSettings
 import ru.ua1zbe.svxremote.prefs.Prefs
 import ru.ua1zbe.svxremote.proto.MsgParser
 import ru.ua1zbe.svxremote.proto.ReflectorClient
-import ru.ua1zbe.svxremote.ui.LevelMeter
 import ru.ua1zbe.svxremote.ui.PttButton
 
 private const val REQ_MIC = 1001
@@ -36,18 +45,27 @@ class MainActivity : Activity(), SvxService.Listener {
 
     private lateinit var statusChip: TextView
     private lateinit var lblSubtitle: TextView
+    private lateinit var lblCallsign: TextView
+    private lateinit var lblTg: TextView
     private lateinit var lblTalkerTitle: TextView
     private lateinit var lblTalker: TextView
     private lateinit var lblPttHint: TextView
     private lateinit var lblTxState: TextView
-    private lateinit var btnConnect: Button
+    private lateinit var lblConnectHint: TextView
+    private lateinit var connectZone: View
+    private lateinit var rxBarFill: View
+    private lateinit var rxDb: TextView
+    private lateinit var micBarFill: View
+    private lateinit var micDb: TextView
     private lateinit var pttButton: PttButton
-    private lateinit var levelMeter: LevelMeter
     private lateinit var btnSettings: ImageButton
+    private lateinit var btnMonitor: ImageButton
 
     private val mainHandler = Handler(Looper.getMainLooper())
 
     private var connected = false
+    private var monitoring = false
+    private var priorityActive = false
     private var settings: ConnectionSettings = ConnectionSettings("", 5300, "", "", 11)
 
     private var svc: SvxService? = null
@@ -62,10 +80,15 @@ class MainActivity : Activity(), SvxService.Listener {
         }
     }
 
+    private var pendingUpdate: UpdateChecker.UpdateInfo? = null
+    private var updateDialog: AlertDialog? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        SplashActivity.mainAlive = true
         setContentView(R.layout.activity_main)
         window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        checkForUpdates()
 
         statusChip = findViewById(R.id.status_chip)
         lblSubtitle = findViewById(R.id.lbl_subtitle)
@@ -73,47 +96,51 @@ class MainActivity : Activity(), SvxService.Listener {
         lblTalker = findViewById(R.id.lbl_talker)
         lblPttHint = findViewById(R.id.lbl_ptt_hint)
         lblTxState = findViewById(R.id.lbl_tx_state)
-        btnConnect = findViewById(R.id.btn_connect)
+        lblConnectHint = findViewById(R.id.lbl_connect_hint)
+        connectZone = findViewById(R.id.connect_zone)
+        lblCallsign = findViewById(R.id.lbl_callsign)
+        lblTg = findViewById(R.id.lbl_tg)
+        rxBarFill = findViewById(R.id.rx_bar_fill)
+        rxDb = findViewById(R.id.rx_db)
+        micBarFill = findViewById(R.id.mic_bar_fill)
+        micDb = findViewById(R.id.mic_db)
         pttButton = findViewById(R.id.ptt_button)
-        levelMeter = findViewById(R.id.level_meter)
         btnSettings = findViewById(R.id.btn_settings)
+        btnMonitor = findViewById(R.id.btn_monitor)
+        pttButton.enabled2 = false
+
+        btnMonitor.setOnClickListener { toggleMonitoring() }
+        updateMonitorButton()
+        val testText = intent?.getStringExtra("node_toast_test")
+        if (testText != null) {
+            mainHandler.postDelayed({ showNodeOverlay(testText) }, 1500)
+        }
 
         btnSettings.setOnClickListener {
             startActivity(Intent(this, SettingsActivity::class.java))
         }
 
-        btnConnect.setOnClickListener {
-            val s = svc
-            if (connected && s != null) {
-                s.disconnect()
+        findViewById<ImageButton>(R.id.btn_power).setOnClickListener {
+            svc?.disconnect()
+            stopService(Intent(this, SvxService::class.java))
+            SplashActivity.mainAlive = false
+            finishAffinity()
+        }
+
+        lblTg.setOnClickListener { showGroupsDialog() }
+
+        lblCallsign.setOnClickListener { showNodesDialog() }
+
+        connectZone.setOnClickListener {
+            if (connected) {
+                svc?.disconnect()
             } else {
-                settings = Prefs.load(this)
                 if (settings.host.isBlank() || settings.callsign.isBlank()) {
                     toast(getString(R.string.toast_need_settings))
                     return@setOnClickListener
                 }
-                if (checkSelfPermission(Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
-                    requestPermissions(arrayOf(Manifest.permission.RECORD_AUDIO), REQ_MIC)
-                    return@setOnClickListener
-                }
-                if (Build.VERSION.SDK_INT >= 33 &&
-                    checkSelfPermission(Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
-                ) {
-                    requestPermissions(arrayOf(Manifest.permission.POST_NOTIFICATIONS), REQ_NOTIF)
-                }
-                startForegroundService(Intent(this, SvxService::class.java))
-                bindService(Intent(this, SvxService::class.java), svcConn, Context.BIND_AUTO_CREATE)
-                mainHandler.postDelayed({
-                    svc?.connect(
-                        ReflectorClient.Settings(
-                            host = settings.host,
-                            port = settings.port,
-                            callsign = settings.callsign,
-                            authKey = settings.authKey,
-                            talkGroup = settings.talkGroup
-                        )
-                    )
-                }, 300)
+                requestPermissionsIfNeeded()
+                connect()
             }
         }
 
@@ -127,29 +154,48 @@ class MainActivity : Activity(), SvxService.Listener {
                     toast(getString(R.string.perm_mic))
                     return
                 }
-                lblTxState.visibility = TextView.VISIBLE
                 lblPttHint.text = getString(R.string.ptt_talking)
+                lblTxState.text = getString(R.string.status_big_talking)
                 svc?.startTx()
             }
 
             override fun onPttUp() {
+                Log.d("SVXRemote", "PTT up")
                 svc?.stopTx()
-                lblTxState.visibility = TextView.GONE
-                lblPttHint.text = getString(R.string.ptt_hint)
+                lblPttHint.text = getString(R.string.hold_to_talk)
+                lblTxState.text =
+                    if (connected) getString(R.string.status_big_connected)
+                    else getString(R.string.status_big_disconnected)
             }
         })
 
         refreshUi()
     }
 
+    private var autoConnectAttempted = false
+
     override fun onResume() {
         super.onResume()
         settings = Prefs.load(this)
         refreshUi()
+        if (!autoConnectAttempted &&
+            settings.host.isNotBlank() &&
+            settings.callsign.isNotBlank()
+        ) {
+            autoConnectAttempted = true
+            requestPermissionsIfNeeded()
+            connect()
+        }
+        if (pendingUpdate != null && updateDialog == null && canInstall()) {
+            startUpdate()
+        }
     }
 
     override fun onDestroy() {
         super.onDestroy()
+        hideNodeOverlay()
+        mainHandler.removeCallbacksAndMessages(null)
+        SplashActivity.mainAlive = false
         svc?.listener = null
         unbindService(svcConn)
     }
@@ -161,6 +207,12 @@ class MainActivity : Activity(), SvxService.Listener {
         } else {
             getString(R.string.server_subtitle, host, settings.port, settings.talkGroup)
         }
+        lblCallsign.text = if (settings.callsign.isBlank()) {
+            getString(R.string.settings_not_configured)
+        } else {
+            settings.callsign
+        }
+        lblTg.text = getString(R.string.tg_badge, settings.talkGroup)
     }
 
     // ---------- Callbacks от SvxService (фоновые потоки!) ----------
@@ -173,7 +225,11 @@ class MainActivity : Activity(), SvxService.Listener {
                     connected = false
                     updatePttEnabled()
                     statusChip.text = getString(R.string.status_disconnected)
-                    btnConnect.text = getString(R.string.btn_connect)
+                    statusChip.setTextColor(getColor(R.color.danger))
+                    lblTxState.text = getString(R.string.status_big_disconnected)
+                    lblTxState.setTextColor(getColor(R.color.danger))
+                    lblConnectHint.text = getString(R.string.hint_connect)
+                    lblPttHint.text = getString(R.string.hold_to_talk)
                 }
 
                 ReflectorClient.STATE_CONNECTING,
@@ -182,7 +238,9 @@ class MainActivity : Activity(), SvxService.Listener {
                 ReflectorClient.STATE_WAIT_AUTH_OK,
                 ReflectorClient.STATE_WAIT_SERVER_INFO -> {
                     statusChip.text = getString(R.string.status_connecting)
-                    btnConnect.text = getString(R.string.btn_disconnect)
+                    statusChip.setTextColor(getColor(R.color.warn))
+                    lblTxState.text = getString(R.string.status_connecting).uppercase()
+                    lblTxState.setTextColor(getColor(R.color.warn))
                     connected = false
                     updatePttEnabled()
                 }
@@ -190,15 +248,25 @@ class MainActivity : Activity(), SvxService.Listener {
                 ReflectorClient.STATE_READY -> {
                     connected = true
                     updatePttEnabled()
-                    statusChip.text = getString(R.string.status_connected)
-                    btnConnect.text = getString(R.string.btn_disconnect)
+                    statusChip.text = if (monitoring) {
+                        getString(R.string.status_monitoring, monitorTgLabel())
+                    } else {
+                        getString(R.string.status_connected)
+                    }
+                    statusChip.setTextColor(getColor(R.color.accent))
+                    lblTxState.text = getString(R.string.status_big_connected)
+                    lblTxState.setTextColor(getColor(R.color.accent))
+                    lblConnectHint.text = getString(R.string.hint_disconnect)
                 }
 
                 ReflectorClient.STATE_AUTH_FAILED -> {
                     connected = false
                     updatePttEnabled()
                     statusChip.text = getString(R.string.status_auth_failed)
-                    btnConnect.text = getString(R.string.btn_connect)
+                    statusChip.setTextColor(getColor(R.color.danger))
+                    lblTxState.text = getString(R.string.status_big_disconnected)
+                    lblTxState.setTextColor(getColor(R.color.danger))
+                    lblConnectHint.text = getString(R.string.hint_connect)
                     toast(getString(R.string.status_error, detail ?: ""))
                 }
 
@@ -206,7 +274,10 @@ class MainActivity : Activity(), SvxService.Listener {
                     connected = false
                     updatePttEnabled()
                     statusChip.text = getString(R.string.status_error, detail ?: "")
-                    btnConnect.text = getString(R.string.btn_connect)
+                    statusChip.setTextColor(getColor(R.color.danger))
+                    lblTxState.text = getString(R.string.status_big_disconnected)
+                    lblTxState.setTextColor(getColor(R.color.danger))
+                    lblConnectHint.text = getString(R.string.hint_connect)
                 }
             }
         }
@@ -222,13 +293,79 @@ class MainActivity : Activity(), SvxService.Listener {
 
     override fun onTalkerStart(tg: Long, callsign: String) {
         mainHandler.post {
-            lblTalkerTitle.text = getString(R.string.talker_now, callsign)
+            val priority = monitoring && settings.groups.firstOrNull() == tg
+            if (priority) {
+                priorityActive = true
+            }
+            if (priority || !priorityActive) {
+                svc?.selectGroup(tg)
+                lblTalkerTitle.text = when {
+                    priority -> getString(R.string.talker_mon_priority, callsign, tg)
+                    monitoring -> getString(R.string.talker_mon, callsign, tg)
+                    else -> getString(R.string.talker_now, callsign)
+                }
+                lblTalkerTitle.setTextColor(
+                    if (priority) getColor(R.color.danger) else getColor(R.color.text_secondary)
+                )
                 lblTalker.text = callsign
             }
         }
+    }
 
     override fun onTalkerStop(tg: Long, callsign: String) {
         // последний говоривший остаётся на экране
+        mainHandler.post {
+            if (monitoring && settings.groups.firstOrNull() == tg) {
+                priorityActive = false
+            }
+        }
+    }
+
+    override fun onNodeJoined(callsign: String, tg: Long?) {
+        showNodeToast(R.string.toast_node_joined, callsign, tg)
+    }
+
+    override fun onNodeLeft(callsign: String, tg: Long?) {
+        showNodeToast(R.string.toast_node_left, callsign, tg)
+    }
+
+    private fun showNodeToast(tpl: Int, callsign: String, tg: Long?) {
+        if (!Prefs.nodeToastsEnabled(this)) return
+        if (callsign.equals(settings.callsign, ignoreCase = true)) return
+        val suffix = if (tg != null) getString(R.string.node_tg_suffix, tg) else ""
+        mainHandler.post { showNodeOverlay(getString(tpl, callsign, suffix)) }
+    }
+
+    private var nodeOverlay: View? = null
+
+    private fun showNodeOverlay(text: String) {
+        hideNodeOverlay()
+        val view = layoutInflater.inflate(R.layout.view_node_toast, null, false)
+        view.findViewById<TextView>(R.id.lbl_node_toast).text = text
+        try {
+            windowManager.addView(
+                view,
+                WindowManager.LayoutParams(
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.TYPE_APPLICATION,
+                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or
+                        WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
+                    PixelFormat.TRANSLUCENT
+                ).apply { gravity = Gravity.CENTER }
+            )
+            nodeOverlay = view
+            mainHandler.postDelayed({ hideNodeOverlay() }, 5000)
+        } catch (_: Exception) {
+            toast(text)
+        }
+    }
+
+    private fun hideNodeOverlay() {
+        nodeOverlay?.let { v ->
+            try { windowManager.removeView(v) } catch (_: Exception) { }
+            nodeOverlay = null
+        }
     }
 
     override fun onAudioPacket(packet: ByteArray, seq: Int) {
@@ -239,7 +376,18 @@ class MainActivity : Activity(), SvxService.Listener {
 
     override fun onLevel(source: Int, level: Float) {
         mainHandler.post {
-            levelMeter.setLevel(source, level)
+            val db = if (level <= 0.001f) {
+                getString(R.string.meter_idle)
+            } else {
+                getString(R.string.meter_db, (level * 60).toInt().coerceIn(1, 60))
+            }
+            if (source == 0) { // SRC_MIC
+                micBarFill.scaleX = level.coerceIn(0f, 1f)
+                micDb.text = db
+            } else { // SRC_SPEAKER
+                rxBarFill.scaleX = level.coerceIn(0f, 1f)
+                rxDb.text = db
+            }
         }
     }
 
@@ -250,9 +398,225 @@ class MainActivity : Activity(), SvxService.Listener {
     }
 
     private fun updatePttEnabled() {
-        pttButton.enabled2 = connected
+        pttButton.enabled2 = connected && !monitoring
     }
 
+    private fun requestPermissionsIfNeeded() {
+        if (checkSelfPermission(Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+            requestPermissions(arrayOf(Manifest.permission.RECORD_AUDIO), REQ_MIC)
+        }
+        if (Build.VERSION.SDK_INT >= 33 &&
+            checkSelfPermission(Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
+        ) {
+            requestPermissions(arrayOf(Manifest.permission.POST_NOTIFICATIONS), REQ_NOTIF)
+        }
+    }
+
+    /** Запустить сервис и подключиться с текущими настройками. */
+    private fun connect() {
+        startForegroundService(Intent(this, SvxService::class.java))
+        bindService(Intent(this, SvxService::class.java), svcConn, Context.BIND_AUTO_CREATE)
+        mainHandler.postDelayed({
+            svc?.connect(
+                ReflectorClient.Settings(
+                    host = settings.host,
+                    port = settings.port,
+                    callsign = settings.callsign,
+                    authKey = settings.authKey,
+                    talkGroup = settings.talkGroup,
+                    monitorTgs = if (monitoring) settings.groups else null
+                )
+            )
+        }, 300)
+    }
+
+    /** Включить/выключить режим мониторинга групп с переподключением. */
+    private fun toggleMonitoring() {
+        monitoring = !monitoring
+        priorityActive = false
+        updateMonitorButton()
+        updatePttEnabled()
+        if (connected) {
+            svc?.disconnect()
+            mainHandler.postDelayed({ connect() }, 500)
+        } else {
+            connect()
+        }
+    }
+
+    private fun updateMonitorButton() {
+        val active = monitoring
+        btnMonitor.imageTintList = ColorStateList.valueOf(
+            if (active) Color.parseColor("#58A6FF") else Color.parseColor("#8B949E")
+        )
+        btnMonitor.setBackgroundResource(if (active) R.drawable.bg_monitor_on else 0)
+        btnMonitor.contentDescription =
+            getString(if (active) R.string.btn_monitor_on else R.string.btn_monitor)
+    }
+
+    /** Переключиться на другую группу: пересохранить и переподключиться. */
+    private fun switchGroup(tg: Long) {
+        settings = settings.copy(talkGroup = tg)
+        Prefs.save(this, settings)
+        refreshUi()
+        svc?.disconnect()
+        mainHandler.postDelayed({ connect() }, 500)
+    }
+
+    private fun monitorTgLabel(): String =
+        settings.groups.joinToString(", ") { "TG$it" }
+
+    private fun showNodesDialog() {
+        val nodes = svc?.nodeList().orEmpty()
+        if (nodes.isEmpty()) {
+            toast(getString(R.string.toast_nodes_empty))
+            return
+        }
+        val myCs = settings.callsign.trim()
+        val items = nodes
+            .map { (cs, tg) ->
+                val t = tg ?: if (cs.equals(myCs, ignoreCase = true)) settings.talkGroup else null
+                if (t != null) getString(R.string.node_with_tg, cs, t) else cs
+            }
+            .sorted()
+        AlertDialog.Builder(this)
+            .setTitle(getString(R.string.nodes_title, items.size))
+            .setItems(items.toTypedArray(), null)
+            .show()
+    }
+
+    private fun showGroupsDialog() {
+        val groups = (settings.groups + settings.talkGroup).distinct()
+        if (groups.isEmpty()) {
+            toast(getString(R.string.toast_groups_empty))
+            return
+        }
+        val current = settings.talkGroup
+        AlertDialog.Builder(this)
+            .setTitle(R.string.select_tg)
+            .setItems(groups.map { tg ->
+                val label = getString(R.string.tg_badge, tg)
+                if (tg == current) "$label ✓" else label
+            }.toTypedArray()) { _, which ->
+                val tg = groups[which]
+                if (tg != current) switchGroup(tg)
+            }
+            .show()
+    }
+
+    private fun checkForUpdates() {
+        Thread {
+            val version = try {
+                packageManager.getPackageInfo(packageName, 0).versionName
+            } catch (_: Exception) {
+                return@Thread
+            }
+            val info = try {
+                UpdateChecker.check(version)
+            } catch (e: Exception) {
+                Log.w(TAG, "update check failed: ${e.message}")
+                null
+            }
+            if (info != null) {
+                mainHandler.post { showUpdateDialog(info) }
+            } else {
+                Log.d(TAG, "update: no newer version")
+            }
+        }.start()
+    }
+
+    private fun showUpdateDialog(info: UpdateChecker.UpdateInfo) {
+        pendingUpdate = info
+        updateDialog = AlertDialog.Builder(this)
+            .setTitle(R.string.update_available_title)
+            .setMessage(getString(R.string.update_available_msg, info.version))
+            .setPositiveButton(R.string.update_btn) { _, _ -> startUpdate() }
+            .setNegativeButton(R.string.update_later) { _, _ ->
+                pendingUpdate = null
+                updateDialog = null
+            }
+            .setOnCancelListener {
+                pendingUpdate = null
+                updateDialog = null
+            }
+            .show()
+    }
+
+    private fun canInstall(): Boolean =
+        Build.VERSION.SDK_INT < Build.VERSION_CODES.O || packageManager.canRequestPackageInstalls()
+
+    private fun startUpdate() {
+        val info = pendingUpdate ?: return
+        if (!canInstall()) {
+            startActivity(
+                Intent(
+                    Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES,
+                    Uri.parse("package:$packageName")
+                )
+            )
+            return
+        }
+        val progress = ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal)
+        progress.max = 100
+        val label = TextView(this)
+        label.setText(R.string.update_downloading)
+        label.setPadding(dp(20), dp(16), dp(20), 0)
+        val content = LinearLayout(this).apply {
+            orientation = LinearLayout.VERTICAL
+            addView(label)
+            addView(
+                progress,
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                ).apply { topMargin = dp(12) }
+            )
+        }
+        updateDialog = AlertDialog.Builder(this)
+            .setTitle(R.string.update_available_title)
+            .setView(content)
+            .setCancelable(false)
+            .show()
+
+        val file = File(cacheDir, "updates/svxhomyak-${info.version}.apk")
+        file.parentFile?.mkdirs()
+        Thread {
+            try {
+                UpdateChecker.download(info.apkUrl, file) { p ->
+                    mainHandler.post { progress.progress = (p * 100).toInt() }
+                }
+                mainHandler.post {
+                    updateDialog?.dismiss()
+                    updateDialog = null
+                    pendingUpdate = null
+                    installApk(file)
+                }
+            } catch (e: Exception) {
+                mainHandler.post {
+                    updateDialog?.dismiss()
+                    updateDialog = null
+                    pendingUpdate = null
+                    toast(getString(R.string.update_failed, e.message))
+                }
+            }
+        }.start()
+    }
+
+    private fun installApk(file: File) {
+        val uri = Uri.Builder()
+            .scheme("content")
+            .authority("$packageName.fileprovider")
+            .path("updates/${file.name}")
+            .build()
+        val intent = Intent(Intent.ACTION_VIEW).apply {
+            setDataAndType(uri, "application/vnd.android.package-archive")
+            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        }
+        startActivity(intent)
+    }
+
+    private fun dp(v: Int): Int = (v * resources.displayMetrics.density).toInt()
+
     private fun toast(msg: String) {
         Toast.makeText(this, msg, Toast.LENGTH_SHORT).show()
     }

app/src/main/java/ru/ua1zbe/svxremote/SettingsActivity.kt

@@ -3,6 +3,7 @@ package ru.ua1zbe.svxremote
 import android.app.Activity
 import android.os.Bundle
 import android.widget.Button
+import android.widget.CheckBox
 import android.widget.EditText
 import android.widget.Toast
 import ru.ua1zbe.svxremote.prefs.ConnectionSettings
@@ -15,6 +16,7 @@ class SettingsActivity : Activity() {
     private lateinit var inputCallsign: EditText
     private lateinit var inputAuthKey: EditText
     private lateinit var inputTg: EditText
+    private lateinit var inputGroups: EditText
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -25,6 +27,9 @@ class SettingsActivity : Activity() {
         inputCallsign = findViewById(R.id.input_callsign)
         inputAuthKey = findViewById(R.id.input_auth_key)
         inputTg = findViewById(R.id.input_tg)
+        inputGroups = findViewById(R.id.input_groups)
+        val chkNodeToasts = findViewById<CheckBox>(R.id.chk_node_toasts)
+        chkNodeToasts.isChecked = Prefs.nodeToastsEnabled(this)
 
         val s = Prefs.load(this)
         inputHost.setText(s.host)
@@ -32,6 +37,7 @@ class SettingsActivity : Activity() {
         inputCallsign.setText(s.callsign)
         inputAuthKey.setText(s.authKey)
         inputTg.setText(s.talkGroup.toString())
+        inputGroups.setText(s.groups.joinToString(", "))
 
         findViewById<Button>(R.id.btn_save).setOnClickListener {
             val host = inputHost.text.toString().trim()
@@ -39,6 +45,10 @@ class SettingsActivity : Activity() {
             val callsign = inputCallsign.text.toString().trim()
             val authKey = inputAuthKey.text.toString()
             val tg = inputTg.text.toString().trim().toLongOrNull() ?: 11
+            val groups = inputGroups.text.toString()
+                .split(',')
+                .mapNotNull { it.trim().toLongOrNull() }
+                .distinct()
 
             if (host.isBlank() || callsign.isBlank()) {
                 toast(getString(R.string.toast_settings_empty))
@@ -52,9 +62,11 @@ class SettingsActivity : Activity() {
                     port = port.coerceIn(1, 65535),
                     callsign = callsign,
                     authKey = authKey,
-                    talkGroup = tg.coerceAtLeast(0)
+                    talkGroup = tg.coerceAtLeast(0),
+                    groups = groups
                 )
             )
+            Prefs.setNodeToastsEnabled(this, chkNodeToasts.isChecked)
             toast(getString(R.string.saved))
             finish()
         }

app/src/main/java/ru/ua1zbe/svxremote/SplashActivity.kt

@@ -0,0 +1,72 @@
+package ru.ua1zbe.svxremote
+
+import android.app.Activity
+import android.content.Intent
+import android.os.Bundle
+import android.view.View
+import android.view.animation.AccelerateDecelerateInterpolator
+
+/** Красивая заставка с плавным появлением логотипа. */
+class SplashActivity : Activity() {
+
+    companion object {
+        @Volatile
+        var mainAlive = false
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        if (mainAlive) {
+            openMain()
+            return
+        }
+        setContentView(R.layout.activity_splash)
+
+        val title = findViewById<View>(R.id.splash_title)
+        val subtitle = findViewById<View>(R.id.splash_subtitle)
+        val line = findViewById<View>(R.id.splash_line)
+
+        title.alpha = 0f
+        subtitle.alpha = 0f
+        line.alpha = 0f
+
+        title.animate()
+            .alpha(1f)
+            .scaleX(1.0f)
+            .scaleY(1.0f)
+            .setStartDelay(150)
+            .setDuration(700)
+            .setInterpolator(AccelerateDecelerateInterpolator())
+            .start()
+
+        subtitle.animate()
+            .alpha(1f)
+            .setStartDelay(600)
+            .setDuration(600)
+            .start()
+
+        line.animate()
+            .alpha(1f)
+            .setStartDelay(900)
+            .setDuration(500)
+            .start()
+
+        window.decorView.postDelayed({
+            openMain()
+        }, 4000)
+    }
+
+    private fun openMain() {
+        val intent = Intent(this, MainActivity::class.java)
+            .addFlags(
+                Intent.FLAG_ACTIVITY_NEW_TASK or
+                    Intent.FLAG_ACTIVITY_CLEAR_TOP or
+                    Intent.FLAG_ACTIVITY_SINGLE_TOP
+            )
+        val testText = this.intent?.getStringExtra("node_toast_test")
+        if (testText != null) intent.putExtra("node_toast_test", testText)
+        startActivity(intent)
+        overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
+        finish()
+    }
+}

app/src/main/java/ru/ua1zbe/svxremote/SvxService.kt

@@ -3,10 +3,12 @@ package ru.ua1zbe.svxremote
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
+import android.app.PendingIntent
 import android.app.Service
 import android.content.Intent
 import android.os.Binder
 import android.os.IBinder
+import android.util.Log
 import ru.ua1zbe.svxremote.audio.OpusEngine
 import ru.ua1zbe.svxremote.proto.MsgParser
 import ru.ua1zbe.svxremote.proto.ReflectorClient
@@ -22,6 +24,8 @@ class SvxService : Service(), ReflectorClient.Callbacks {
         fun onServerInfo(info: MsgParser.ServerInfo)
         fun onTalkerStart(tg: Long, callsign: String)
         fun onTalkerStop(tg: Long, callsign: String)
+        fun onNodeJoined(callsign: String, tg: Long?)
+        fun onNodeLeft(callsign: String, tg: Long?)
         fun onAudioPacket(packet: ByteArray, seq: Int)
         fun onAudioFlush()
         fun onError(detail: String)
@@ -53,11 +57,22 @@ class SvxService : Service(), ReflectorClient.Callbacks {
         nm.createNotificationChannel(
             NotificationChannel("svx", "SVXRemote", NotificationManager.IMPORTANCE_LOW)
         )
+        updateNotification(getString(R.string.notif_connected))
+    }
+
+    private fun updateNotification(text: String) {
+        val contentIntent = PendingIntent.getActivity(
+            this, 0,
+            Intent(this, MainActivity::class.java)
+                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP),
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
         val n = Notification.Builder(this, "svx")
             .setContentTitle("SVXRemote")
-            .setContentText(getString(R.string.notif_connected))
-            .setSmallIcon(android.R.drawable.ic_menu_call)
+            .setContentText(text)
+            .setSmallIcon(R.drawable.ic_launcher_fg)
             .setOngoing(true)
+            .setContentIntent(contentIntent)
             .build()
         startForeground(1, n)
     }
@@ -73,20 +88,32 @@ class SvxService : Service(), ReflectorClient.Callbacks {
 
     fun isRunning(): Boolean = client.isRunning()
 
+    fun selectGroup(tg: Long) {
+        client.selectGroup(tg)
+    }
+
     fun startTx() {
         engine.startCapture { packet -> client.sendAudio(packet) }
     }
 
     fun stopTx() {
+        Log.d("SVXRemote", "stopTx")
+        // В фоне: сеть запрещена в главном потоке (NetworkOnMainThreadException),
+        // а join потока захвата блокировал бы UI
+        Thread {
             engine.stopCapture()
             client.sendAudioFlush()
+        }.start()
     }
 
     // ---------- Callbacks (фоновые потоки) ----------
 
     override fun onState(state: Int, detail: String?) {
         when (state) {
-            ReflectorClient.STATE_READY -> engine.startDecoder()
+            ReflectorClient.STATE_READY -> {
+                updateNotification(getString(R.string.notif_connected))
+                engine.startDecoder()
+            }
             ReflectorClient.STATE_DISCONNECTED -> {
                 engine.stopDecoder()
                 stopForeground(STOP_FOREGROUND_REMOVE)
@@ -96,23 +123,47 @@ class SvxService : Service(), ReflectorClient.Callbacks {
     }
 
     override fun onServerInfo(info: MsgParser.ServerInfo) {
+        synchronized(nodeSet) {
+            nodeSet.clear()
+            nodeSet.addAll(info.nodes)
+        }
         listener?.onServerInfo(info)
     }
 
+    private val nodeSet = LinkedHashSet<String>()
+    private val nodeTgs = HashMap<String, Long>()
+
+    /** Текущий список узлов и известные группы (копия для UI). */
+    fun nodeList(): List<Pair<String, Long?>> = synchronized(nodeSet) {
+        nodeSet.map { it to nodeTgs[it] }
+    }
+
+    override fun onNodeJoined(callsign: String, tg: Long?) {
+        synchronized(nodeSet) { nodeSet.add(callsign) }
+        listener?.onNodeJoined(callsign, tg)
+    }
+
+    override fun onNodeLeft(callsign: String, tg: Long?) {
+        synchronized(nodeSet) {
+            nodeSet.remove(callsign)
+            nodeTgs.remove(callsign)
+        }
+        listener?.onNodeLeft(callsign, tg)
+    }
+
     override fun onTalkerStart(tg: Long, callsign: String) {
+        synchronized(nodeSet) {
+            if (callsign in nodeSet) nodeTgs[callsign] = tg
+        }
+        updateNotification(getString(R.string.notif_talking, callsign))
         listener?.onTalkerStart(tg, callsign)
     }
 
     override fun onTalkerStop(tg: Long, callsign: String) {
+        updateNotification(getString(R.string.notif_last_talker, callsign))
         listener?.onTalkerStop(tg, callsign)
     }
 
-    override fun onNodeJoined(callsign: String) {
-    }
-
-    override fun onNodeLeft(callsign: String) {
-    }
-
     override fun onAudioPacket(packet: ByteArray, seq: Int) {
         engine.onAudioPacket(packet)
     }

app/src/main/java/ru/ua1zbe/svxremote/UpdateChecker.kt

@@ -0,0 +1,77 @@
+package ru.ua1zbe.svxremote
+
+import org.json.JSONArray
+import org.json.JSONObject
+import java.io.File
+import java.net.HttpURLConnection
+import java.net.URL
+
+/** Проверка и загрузка обновлений через API Gitea. */
+object UpdateChecker {
+
+    data class UpdateInfo(val version: String, val apkUrl: String)
+
+    private const val API_URL =
+        "https://git2.ua1zbe.ru/api/v1/repos/ua1zbe/svxhomyak/releases/latest"
+
+    /** Вернуть информацию об обновлении, если доступна более новая версия. */
+    fun check(currentVersion: String): UpdateInfo? {
+        val conn = URL(API_URL).openConnection() as HttpURLConnection
+        conn.connectTimeout = 10_000
+        conn.readTimeout = 10_000
+        return try {
+            if (conn.responseCode != 200) return null
+            val json = JSONObject(conn.inputStream.bufferedReader().readText())
+            val version = json.optString("tag_name", "").removePrefix("v")
+            if (!isNewer(version, currentVersion)) return null
+            val assets = json.optJSONArray("assets") ?: JSONArray()
+            var url: String? = null
+            for (i in 0 until assets.length()) {
+                val a = assets.getJSONObject(i)
+                if (a.optString("name").endsWith(".apk")) {
+                    url = a.optString("browser_download_url")
+                    break
+                }
+            }
+            url?.let { UpdateInfo(version, it) }
+        } finally {
+            conn.disconnect()
+        }
+    }
+
+    /** Скачать APK в файл, сообщая прогресс 0..1. */
+    fun download(url: String, target: File, onProgress: (Float) -> Unit) {
+        val conn = URL(url).openConnection() as HttpURLConnection
+        conn.connectTimeout = 15_000
+        conn.readTimeout = 15_000
+        try {
+            val total = conn.contentLengthLong
+            var done = 0L
+            conn.inputStream.use { input ->
+                target.outputStream().use { out ->
+                    val buf = ByteArray(64 * 1024)
+                    while (true) {
+                        val n = input.read(buf)
+                        if (n < 0) break
+                        out.write(buf, 0, n)
+                        done += n
+                        if (total > 0) onProgress(done.toFloat() / total)
+                    }
+                }
+            }
+        } finally {
+            conn.disconnect()
+        }
+    }
+
+    private fun isNewer(remote: String, current: String): Boolean {
+        val r = remote.split('.').mapNotNull { it.toIntOrNull() }
+        val c = current.split('.').mapNotNull { it.toIntOrNull() }
+        for (i in 0 until maxOf(r.size, c.size)) {
+            val a = r.getOrElse(i) { 0 }
+            val b = c.getOrElse(i) { 0 }
+            if (a != b) return a > b
+        }
+        return false
+    }
+}

app/src/main/java/ru/ua1zbe/svxremote/UpdateFileProvider.kt

@@ -0,0 +1,34 @@
+package ru.ua1zbe.svxremote
+
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.database.Cursor
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import java.io.File
+
+/** Минимальный FileProvider для установки APK (без androidx). */
+class UpdateFileProvider : ContentProvider() {
+
+    override fun onCreate(): Boolean = true
+
+    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor {
+        val name = uri.lastPathSegment
+            ?: throw IllegalArgumentException("bad uri")
+        if (name != name.substringAfterLast('/')) {
+            throw IllegalArgumentException("bad uri")
+        }
+        val path = File(context?.cacheDir, "updates/$name")
+        return ParcelFileDescriptor.open(path, ParcelFileDescriptor.MODE_READ_ONLY)
+    }
+
+    override fun getType(uri: Uri): String = "application/vnd.android.package-archive"
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri? = null
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int = 0
+    override fun query(
+        uri: Uri, projection: Array<out String>?, selection: String?,
+        selectionArgs: Array<out String>?, sortOrder: String?
+    ): Cursor? = null
+    override fun update(uri: Uri, values: ContentValues?, selection: String?, selectionArgs: Array<out String>?): Int = 0
+}

app/src/main/java/ru/ua1zbe/svxremote/audio/OpusEngine.kt

@@ -47,33 +47,39 @@ class OpusEngine(
     private var recThread: Thread? = null
 
     private val encodeBufferInfo = MediaCodec.BufferInfo()
-    private val decodeBufferInfo = MediaCodec.BufferInfo()
 
     // ---------- Воспроизведение (RX) ----------
 
-    private var headSent = false
     private val rxQueue = java.util.concurrent.ConcurrentLinkedQueue<ByteArray>()
-    private var drainThread: Thread? = null
+    private val freeInputs = java.util.concurrent.ConcurrentLinkedQueue<Int>()
     private var ptsCounter = 0L
+    private var receivedAny = false
+    private var concealLogs = 0
+    private var dbgOut = 0
+    private var playStarted = false
+    private var gateStart = 0L
+    private val jitterTarget = 6 // ≈ 120 мс накапливаем до первого слива
+    private val configBuffers = ArrayList<ByteArray>()
+    private var configIdx = 0
 
     fun startDecoder() {
         if (decoder != null) return
         val format = MediaFormat()
         format.setString(MediaFormat.KEY_MIME, MediaFormat.MIMETYPE_AUDIO_OPUS)
-        format.setInteger(MediaFormat.KEY_SAMPLE_RATE, SAMPLE_RATE)
+        // ВАЖНО: c2.android.opus.decoder (Android 16) выводит только 48 кГц
+        // (kRate=48000); KEY_SAMPLE_RATE=8000 вызывает конфликт конфига
+        // («We have a failed config») и фатальную ошибку кодера.
+        format.setInteger(MediaFormat.KEY_SAMPLE_RATE, OUT_SAMPLE_RATE)
         format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, CHANNELS)
-        format.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, 8192)
-        // Android 16: c2.android.opus.decoder ждёт 3 конфиг-буфера:
-        // csd-0 OpusHead, csd-1 CodecDelay (int64 LE нс), csd-2 SeekPreRoll (int64 LE нс).
-        // Без csd-1/2 декодер берёт мусорные значения из пакетов и молча
-        // выкидывает весь вывод (mSamplesToDiscard).
-        format.setByteBuffer("csd-0", ByteBuffer.wrap(opusHead()))
-        // Прескип 312 сэмплов при 8 кГц = 39 мс = 39_000_000 нс (перекодируется в 48 кГц внутри)
-        format.setByteBuffer("csd-1", ByteBuffer.wrap(longBytes(39_000_000L)))
-        format.setByteBuffer("csd-2", ByteBuffer.wrap(longBytes(0L)))
+        // Android 16: c2.android.opus.decoder читает конфиг (OpusHead + codec
+        // delay + seek preroll) ТОЛЬКО из первых входных буферов
+        // (см. queueDecoderConfig); csd-ключи MediaFormat он игнорирует, и без
+        // конфига первый же аудио-кадр ломает декодер (C2_CORRUPTED).
         decoder = try {
             MediaCodec.createDecoderByType(MediaFormat.MIMETYPE_AUDIO_OPUS).also {
+                it.setCallback(decoderCallback)
                 it.configure(format, null, null, 0)
+                queueDecoderConfig() // готовим конфиг ДО start: колбэки уйдут после
                 it.start()
             }
         } catch (e: Exception) {
@@ -81,6 +87,7 @@ class OpusEngine(
             null
         }
         if (decoder == null) return
+        Log.d(TAG, "decoder started, config=${configBuffers.size}B")
         val minBuf = AudioTrack.getMinBufferSize(
             OUT_SAMPLE_RATE,
             AudioFormat.CHANNEL_OUT_MONO,
@@ -92,77 +99,165 @@ class OpusEngine(
                 OUT_SAMPLE_RATE,
                 AudioFormat.CHANNEL_OUT_MONO,
                 AudioFormat.ENCODING_PCM_16BIT,
-                maxOf(minBuf, FRAME_SIZE * 2 * 8),
+                maxOf(minBuf, 20000), // ~208 мс — буфер AudioTrack и есть джиттер-буфер
                 AudioTrack.MODE_STREAM
-            ).also { it.play() }
+            ) // play() включаем на первом выходном кадре — буфер успевает накопиться
         } catch (e: Exception) {
             Log.e(TAG, "AudioTrack create failed: ${e.message}")
             null
         }
-        headSent = true // csd уходит через формат, не через буферы
-        drainThread = Thread({ drainLoop() }, "opus-out").also { it.start() }
+        concealLogs = 0
+        dbgOut = 0
+        ptsCounter = 20_000L // первый кадр: pts!=0, иначе декодер повторно сбросит codecDelay
         Log.d(TAG, "decoder started")
     }
 
+    /** Асинхронные колбэки кодера: подача входных кадров + слив вывода. */
+    private val decoderCallback = object : MediaCodec.Callback() {
+        override fun onError(codec: MediaCodec, e: MediaCodec.CodecException) {
+            Log.e(TAG, "decoder error: ${e.message} code=${e.errorCode} transient=${e.isTransient}")
+        }
+
+        override fun onInputBufferAvailable(codec: MediaCodec, index: Int) {
+            // Конфиг (csd) первыми входными буферами — в async-режиме нельзя
+            // использовать dequeueInputBuffer, только колбэки
+            if (configIdx < configBuffers.size) {
+                val data = configBuffers[configIdx++]
+                try {
+                    val buf = codec.getInputBuffer(index) ?: return
+                    buf.clear()
+                    buf.put(data)
+                    codec.queueInputBuffer(index, 0, data.size, 0, MediaCodec.BUFFER_FLAG_CODEC_CONFIG)
+                    Log.d(TAG, "cfg ${data.size}B")
+                } catch (e: Exception) {
+                    Log.e(TAG, "cfg error: ${e.message}")
+                }
+                return
+            }
+            val pkt = rxQueue.poll()
+            when {
+                // Джиттер-гейт: пока не накопили jitterTarget кадров (или не
+                // вышло 80 мс с первого пакета) — не кормим декодер, чтобы
+                // буфер AudioTrack успел заполниться до старта воспроизведения
+                pkt != null && gateOpen() -> feedDecoder(codec, index, pkt)
+                pkt != null -> {
+                    rxQueue.add(pkt)
+                    freeInputs.add(index)
+                }
+                receivedAny -> {
+                    if (concealLogs < 3) {
+                        Log.d(TAG, "conceal (no packet)")
+                        concealLogs++
+                    }
+                    feedDecoder(codec, index, silenceFrame()) // скрытие потерь
+                }
+                else -> freeInputs.add(index) // ждём первый пакет
+            }
+        }
+
+        override fun onOutputBufferAvailable(codec: MediaCodec, index: Int, info: MediaCodec.BufferInfo) {
+            try {
+                if (info.size > 0) {
+                    val outBuf = ByteBuffer.allocate(info.size)
+                    outBuf.order(ByteOrder.LITTLE_ENDIAN)
+                    codec.getOutputBuffer(index)?.also { src ->
+                        src.position(info.offset)
+                        src.limit(info.offset + info.size)
+                        outBuf.put(src)
+                    }
+                    val pcm = outBuf.array()
+                    if (!playStarted) {
+                        playStarted = true
+                        Log.d(TAG, "play start")
+                        try {
+                            player?.play()
+                        } catch (e: Exception) {
+                            Log.e(TAG, "play error: ${e.message}")
+                        }
+                    }
+                    player?.write(pcm, 0, pcm.size)
+                    onLevel(SRC_SPEAKER, pcmLevel(pcm))
+                    if (dbgOut < 5) {
+                        Log.d(TAG, "out ${pcm.size}B")
+                        dbgOut++
+                    }
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "out error: ${e.message}")
+            } finally {
+                try {
+                    codec.releaseOutputBuffer(index, false)
+                } catch (_: Exception) {
+                }
+            }
+        }
+
+        override fun onOutputFormatChanged(codec: MediaCodec, format: MediaFormat) {
+            Log.d(TAG, "dec out format: sr=${format.getInteger(MediaFormat.KEY_SAMPLE_RATE)} " +
+                "ch=${format.getInteger(MediaFormat.KEY_CHANNEL_COUNT)}")
+        }
+    }
+
+    private fun feedDecoder(codec: MediaCodec, index: Int, pkt: ByteArray) {
+        try {
+            val buf = codec.getInputBuffer(index) ?: return
+            buf.clear()
+            buf.put(pkt)
+            codec.queueInputBuffer(index, 0, pkt.size, ptsCounter, 0)
+            ptsCounter += 20_000L // 20 мс кадра
+            if (concealLogs < 3 && rxQueue.isEmpty() && pkt === silenceFrame()) {
+                Log.d(TAG, "conceal (no packet)")
+                concealLogs++
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "feed error: ${e.message}")
+        }
+    }
+
+    /**
+     * Android 16: c2.android.opus.decoder читает конфиг из первых входных
+     * буферов. Единый CSD-блоб (формат AOSP WriteOpusHeaders): OpusHead (19
+     * байт) + codecDelay (int64 LE нс) + seekPreroll (int64 LE нс) — БЕЗ
+     * u32-префиксов длины. После него декодер уже сконфигурирован; лишние
+     * конфиг-буферы игнорируются как повторный CSD, поэтому шлём и их.
+     */
+    private fun queueDecoderConfig() {
+        configBuffers.clear()
+        try {
+            val head = opusHead()
+            val delay = longBytes(39_000_000L) // прескип 312 сэмплов при 8 кГц = 39 мс
+            val preroll = longBytes(0L)
+            val w = java.io.ByteArrayOutputStream()
+            w.write(head)
+            w.write(delay)
+            w.write(preroll)
+            configBuffers.add(w.toByteArray())
+            configBuffers.add(delay)
+            configBuffers.add(preroll)
+            configIdx = 0
+        } catch (_: Exception) {
+        }
+    }
+
     /** int64 в little-endian. */
     private fun longBytes(v: Long): ByteArray =
         ByteBuffer.allocate(8).order(ByteOrder.LITTLE_ENDIAN).putLong(v).array()
 
-    /** Отдельный поток: голова + входная очередь + слив вывода. */
-    private fun drainLoop() {
-        val dec = decoder ?: return
-        var dbg = 0
-        while (decoder != null && decoder === dec) {
-            try {
-                // Монотонный pts обязателен: при pts==0 c2.opus.decoder
-                // считает каждый кадр «перемоткой в ноль» и выбрасывает
-                // mCodecDelay сэмплов (C2SoftOpusDec.cpp, "When seeking to zero").
-                var pts = ptsCounter
-                while (true) {
-                    val pkt = rxQueue.poll() ?: break
-                    val inIdx = dec.dequeueInputBuffer(5000)
-                    if (inIdx < 0) { rxQueue.add(pkt); break }
-                    val buf = dec.getInputBuffer(inIdx) ?: break
-                    buf.clear()
-                    buf.put(pkt)
-                    dec.queueInputBuffer(inIdx, 0, pkt.size, pts, 0)
-                    pts += 20_000L // 20 мс кадра
-                    ptsCounter = pts
-                    if (dbg < 5) { Log.d(TAG, "queued ${pkt.size}B"); dbg++ }
-                }
-                var outIdx = dec.dequeueOutputBuffer(decodeBufferInfo, 1000)
-                while (outIdx >= 0) {
-                    if (outIdx == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
-                        val f = dec.outputFormat
-                        Log.d(TAG, "dec out format: sr=${f.getInteger(MediaFormat.KEY_SAMPLE_RATE)} " +
-                            "ch=${f.getInteger(MediaFormat.KEY_CHANNEL_COUNT)}")
-                    } else {
-                        if (decodeBufferInfo.size > 0) {
-                            val outBuf = ByteBuffer.allocate(decodeBufferInfo.size)
-                            outBuf.order(ByteOrder.LITTLE_ENDIAN)
-                            dec.getOutputBuffer(outIdx)?.also { src ->
-                                src.position(decodeBufferInfo.offset)
-                                src.limit(decodeBufferInfo.offset + decodeBufferInfo.size)
-                                outBuf.put(src)
-                            }
-                            val pcm = outBuf.array()
-                            player?.write(pcm, 0, pcm.size)
-                            onLevel(SRC_SPEAKER, pcmLevel(pcm))
-                            if (dbg < 5) { Log.d(TAG, "out ${pcm.size}B"); dbg++ }
-                        }
-                        dec.releaseOutputBuffer(outIdx, false)
-                    }
-                    outIdx = dec.dequeueOutputBuffer(decodeBufferInfo, 0)
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "drain error: ${e.message}")
-            }
-        }
-    }
-
-    /** Подача одного Opus-пакета на декодер. */
+    /** Подача одного Opus-пакета на декодер (с UDP-потока). */
     fun onAudioPacket(packet: ByteArray) {
         rxQueue.add(packet)
+        receivedAny = true
+        if (gateStart == 0L) gateStart = System.currentTimeMillis()
+        if (!gateOpen()) return
+        val idx = freeInputs.poll() ?: return // если слот свободен — кормим сразу
+        decoder?.let { feedDecoder(it, idx, rxQueue.poll() ?: packet) }
+    }
+
+    /** Джиттер-гейт открыт: накопили кадры или вышло 80 мс с первого пакета. */
+    private fun gateOpen(): Boolean {
+        if (playStarted) return true
+        if (rxQueue.size >= jitterTarget) return true
+        return gateStart != 0L && System.currentTimeMillis() - gateStart >= 80
     }
 
     fun onAudioFlush() {
@@ -170,11 +265,23 @@ class OpusEngine(
             decoder?.flush()
             player?.flush()
             rxQueue.clear()
+            receivedAny = false
+            playStarted = false
+            gateStart = 0L
             onLevel(SRC_SPEAKER, 0f)
         } catch (_: Exception) {
         }
     }
 
+    /**
+     * Один кадр тишины (20 мс) для скрытия потерь вместо паузы в звуке.
+     * Сгенерирован opuslib: 8 кГц, моно, 20 кбит/с, нули PCM.
+     */
+    private fun silenceFrame(): ByteArray = byteArrayOf(
+        0x08.toByte(), 0x0B.toByte(), 0xE4.toByte(), 0xB9.toByte(),
+        0xA0.toByte(), 0xBC.toByte(), 0x84.toByte()
+    )
+
     /** Заголовок OpusHead (csd-0) для декодера: Opus, 1 канал, 8 кГц, прескип 312. */
     private fun opusHead(): ByteArray {
         val head = "OpusHead".toByteArray(Charsets.US_ASCII)
@@ -197,8 +304,12 @@ class OpusEngine(
     /** Остановить декодер и плеер (при отключении). */
     fun stopDecoder() {
         val dec = decoder
-        decoder = null // поток разбора выйдет из цикла до release
+        decoder = null
         rxQueue.clear()
+        freeInputs.clear()
+        receivedAny = false
+        playStarted = false
+        gateStart = 0L
         if (dec != null) {
             try {
                 dec.stop()
@@ -308,14 +419,43 @@ class OpusEngine(
             } catch (_: Exception) {
             }
         }
+        // Дренаж: отдаём пакеты, оставшиеся в кодере после остановки записи
+        try {
+            var outIdx = enc.dequeueOutputBuffer(encodeBufferInfo, 0)
+            while (outIdx >= 0) {
+                if (encodeBufferInfo.size > 0) {
+                    val outBuf = ByteBuffer.allocate(encodeBufferInfo.size)
+                    enc.getOutputBuffer(outIdx)?.also { src ->
+                        src.position(encodeBufferInfo.offset)
+                        src.limit(encodeBufferInfo.offset + encodeBufferInfo.size)
+                        outBuf.put(src)
+                    }
+                    onPacket(outBuf.array())
+                }
+                enc.releaseOutputBuffer(outIdx, false)
+                outIdx = enc.dequeueOutputBuffer(encodeBufferInfo, 0)
+            }
+        } catch (_: Exception) {
+        }
     }
 
     fun stopCapture() {
+        if (!encoding && recThread == null) return
         encoding = false
         try {
             recorder?.stop()
         } catch (_: Exception) {
         }
+        // Ждём завершения потока захвата: он должен отправить последние пакеты,
+        // чтобы flush (окончание передачи) ушёл после всего аудио
+        val t = recThread
+        recThread = null
+        if (t != null && t.isAlive) {
+            try {
+                t.join(1000)
+            } catch (_: InterruptedException) {
+            }
+        }
         try {
             recorder?.release()
         } catch (_: Exception) {
@@ -330,8 +470,6 @@ class OpusEngine(
         } catch (_: Exception) {
         }
         encoder = null
-        recThread?.interrupt()
-        recThread = null
         onLevel(SRC_MIC, 0f)
     }
 

app/src/main/java/ru/ua1zbe/svxremote/prefs/Prefs.kt

@@ -8,7 +8,8 @@ data class ConnectionSettings(
     val port: Int,
     val callsign: String,
     val authKey: String,
-    val talkGroup: Long
+    val talkGroup: Long,
+    val groups: List<Long> = emptyList()
 )
 
 object Prefs {
@@ -21,7 +22,12 @@ object Prefs {
             port = sp.getInt("port", 5300),
             callsign = sp.getString("callsign", "") ?: "",
             authKey = sp.getString("auth_key", "") ?: "",
-            talkGroup = sp.getLong("tg", 11)
+            talkGroup = sp.getLong("tg", 11),
+            groups = (sp.getString("groups", "") ?: "")
+                .split(',')
+                .mapNotNull { it.trim().toLongOrNull() }
+                .distinct()
+                .ifEmpty { listOf(9L, 11L, 12L, 13L) }
         )
     }
 
@@ -33,6 +39,17 @@ object Prefs {
             .putString("callsign", s.callsign.trim())
             .putString("auth_key", s.authKey)
             .putLong("tg", s.talkGroup)
+            .putString("groups", s.groups.distinct().joinToString(","))
             .apply()
     }
+
+    fun nodeToastsEnabled(context: Context): Boolean {
+        return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+            .getBoolean("node_toasts", true)
+    }
+
+    fun setNodeToastsEnabled(context: Context, enabled: Boolean) {
+        context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+            .edit().putBoolean("node_toasts", enabled).apply()
+    }
 }

app/src/main/java/ru/ua1zbe/svxremote/proto/ReflectorClient.kt

@@ -23,8 +23,8 @@ class ReflectorClient(
         fun onServerInfo(info: MsgParser.ServerInfo)
         fun onTalkerStart(tg: Long, callsign: String)
         fun onTalkerStop(tg: Long, callsign: String)
-        fun onNodeJoined(callsign: String)
-        fun onNodeLeft(callsign: String)
+        fun onNodeJoined(callsign: String, tg: Long?)
+        fun onNodeLeft(callsign: String, tg: Long?)
         /** Входящий аудиопакет Opus. */
         fun onAudioPacket(packet: ByteArray, seq: Int)
         fun onAudioFlush()
@@ -58,7 +58,9 @@ class ReflectorClient(
         val port: Int,
         val callsign: String,
         val authKey: String,
-        val talkGroup: Long
+        val talkGroup: Long,
+        /** Список групп для мониторинга; null = обычный режим (своя группа). */
+        val monitorTgs: List<Long>? = null
     )
 
     @Volatile
@@ -151,12 +153,30 @@ class ReflectorClient(
         udpSend(sock, s, data)
     }
 
+    /** Переключить принимаемую группу на живом соединении. */
+    fun selectGroup(tg: Long) {
+        val sock = tcpSocket
+        if (sock == null || !running.get()) {
+            Log.d(TAG, "selectGroup tg=$tg skipped (sock=${sock != null} running=${running.get()})")
+            return
+        }
+        try {
+            Log.d(TAG, "selectGroup tg=$tg")
+            sendTcp(sock, MsgBuilder.selectTg(tg))
+        } catch (_: Exception) {
+        }
+    }
+
     /** Конец передачи. */
     fun sendAudioFlush() {
         val sock = udpSocket
         val s = settings
         val id = clientId
-        if (sock == null || s == null || id == 0) return
+        if (sock == null || s == null || id == 0) {
+            Log.w(TAG, "sendAudioFlush skipped (sock=${sock != null} s=${s != null} id=$id)")
+            return
+        }
+        Log.d(TAG, "sendAudioFlush")
         udpSend(sock, s, MsgBuilder.udpFlush(id, nextSeq()))
     }
 
@@ -361,19 +381,25 @@ class ReflectorClient(
                     // (иначе сервер не шлёт аудио группы и не показывает
                     // подписку в статусе: monitoredTGs остаётся пустым).
                     sendTcp(socket, MsgBuilder.nodeInfo(CLIENT_SW_INFO, CLIENT_SW_VERSION))
+                    val monitor = s.monitorTgs
+                    if (monitor.isNullOrEmpty()) {
                         sendTcp(socket, MsgBuilder.selectTg(s.talkGroup))
                         sendTcp(socket, MsgBuilder.tgMonitor(listOf(s.talkGroup)))
+                    } else {
+                        sendTcp(socket, MsgBuilder.selectTg(monitor.first()))
+                        sendTcp(socket, MsgBuilder.tgMonitor(monitor))
+                    }
                     openUdp(s)
                 }
 
                 ReflectorProtocol.MSG_NODE_JOINED -> {
-                    val cs = parseSimpleString(msg.fields)
-                    callbacks.onNodeJoined(cs)
+                    val (cs, tg) = parseNodeEvent(msg.fields)
+                    callbacks.onNodeJoined(cs, tg)
                 }
 
                 ReflectorProtocol.MSG_NODE_LEFT -> {
-                    val cs = parseSimpleString(msg.fields)
-                    callbacks.onNodeLeft(cs)
+                    val (cs, tg) = parseNodeEvent(msg.fields)
+                    callbacks.onNodeLeft(cs, tg)
                 }
 
                 ReflectorProtocol.MSG_TALKER_START -> {
@@ -388,6 +414,7 @@ class ReflectorClient(
 
                 ReflectorProtocol.MSG_ERROR -> {
                     val err = MsgParser.errorMessage(msg.fields)
+                    Log.w(TAG, "MSG_ERROR: $err")
                     if (state < STATE_READY) {
                         stopFatal(err.ifEmpty { "Access denied" })
                         return false
@@ -404,6 +431,17 @@ class ReflectorClient(
         return true
     }
 
+    private fun parseNodeEvent(fields: ByteArray): Pair<String, Long?> {
+        return try {
+            val r = BinReader(fields)
+            val cs = r.str().ifEmpty { "?" }
+            val tg = try { r.str().toLongOrNull() } catch (_: Exception) { null }
+            cs to tg
+        } catch (_: Exception) {
+            "?" to null
+        }
+    }
+
     private fun parseSimpleString(fields: ByteArray): String {
         return try {
             BinReader(fields).str().ifEmpty { "?" }
@@ -436,6 +474,7 @@ class ReflectorClient(
             stopUdp()
             val ds = DatagramSocket()
             udpSocket = ds
+            Log.d(TAG, "UDP bound port=${ds.localPort}")
             // Первый пакет регистрирует наш UDP-адрес у сервера
             val addr = resolvedAddr ?: InetAddress.getByName(s.host)
             sendRawUdp(ds, addr, s.port, MsgBuilder.udpHeartbeat(clientId, nextSeq()))
@@ -479,7 +518,7 @@ class ReflectorClient(
         val seq = r.u16()
         val payload = data.copyOfRange(6, data.size)
         when (type) {
-            ReflectorProtocol.MSG_UDP_HEARTBEAT -> Unit
+            ReflectorProtocol.MSG_UDP_HEARTBEAT -> Log.d(TAG, "UDP RX heartbeat")
             ReflectorProtocol.MSG_UDP_AUDIO -> {
                 val audio = MsgParser.udpAudio(payload)
                 if (audio != null && audio.isNotEmpty()) {
@@ -493,7 +532,7 @@ class ReflectorClient(
                 Log.d(TAG, "UDP RX flush")
                 callbacks.onAudioFlush()
             }
-            ReflectorProtocol.MSG_UDP_ALL_SAMPLES_FLUSHED -> Unit
+            ReflectorProtocol.MSG_UDP_ALL_SAMPLES_FLUSHED -> Log.d(TAG, "UDP RX all-flushed seq=$seq")
             else -> Log.d(TAG, "UDP RX type=$type len=${data.size}")
         }
     }
@@ -517,10 +556,16 @@ class ReflectorClient(
     }
 
     private fun sendRawUdp(sock: DatagramSocket, addr: InetAddress, port: Int, data: ByteArray) {
-        if (sock.isClosed) return
+        if (sock.isClosed) {
+            Log.w(TAG, "UDP TX skipped: socket closed")
+            return
+        }
         try {
             sock.send(DatagramPacket(data, data.size, addr, port))
+            val typ = if (data.size >= 2) ((data[0].toInt() shl 8) or (data[1].toInt() and 0xFF)) else -1
+            Log.d(TAG, "UDP TX type=$typ len=${data.size}")
         } catch (e: Exception) {
+            Log.e(TAG, "UDP send error: ${e.message}", e)
             callbacks.onError("UDP send: ${e.message}")
         }
     }

app/src/main/java/ru/ua1zbe/svxremote/ui/PttButton.kt

@@ -84,28 +84,46 @@ class PttButton @JvmOverloads constructor(
         canvas.drawCircle(centerX, centerY, r, paint)
         canvas.drawCircle(centerX, centerY, r, ringPaint)
 
-        // Иконка микрофона
+        // Иконка микрофона (как icons8: капсула + чашка + ножка + основание)
         val micPaint = Paint(Paint.ANTI_ALIAS_FLAG)
         micPaint.color = Color.WHITE
         micPaint.style = Paint.Style.FILL
-        val s = r * 0.55f
-        val path = Path()
-        // Простой микрофон
+
         val x = centerX
         val y = centerY
-        path.moveTo(x - s * 0.30f, y - s * 1.05f)
-        path.lineTo(x + s * 0.30f, y - s * 1.05f)
-        path.lineTo(x + s * 0.30f, y - s * 0.20f)
-        path.cubicTo(x + s * 0.30f, y + s * 0.55f, x - s * 0.30f, y + s * 0.55f, x - s * 0.30f, y - s * 0.20f)
-        path.close()
-        canvas.drawPath(path, micPaint)
-        canvas.drawRect(x - s * 0.06f, y - s * 1.15f, x + s * 0.06f, y - s * 0.28f, micPaint)
-        // ножка и дуга
-        canvas.drawRect(x - s * 0.05f, y + s * 0.28f, x + s * 0.05f, y + s * 0.55f, micPaint)
-        canvas.drawArc(
-            x - s * 0.55f, y + s * 0.30f,
-            x + s * 0.55f, y + s * 1.20f,
-            0f, 180f, false, micPaint
+        val s = r * 0.5f
+
+        // корпус-капсула
+        val halfW = s * 0.34f
+        canvas.drawRoundRect(
+            x - halfW, y - s * 0.85f, x + halfW, y + s * 0.10f,
+            halfW, halfW, micPaint
+        )
+        // чашка-держатель (U-образная, заполненная)
+        val cup = Path()
+        cup.fillType = Path.FillType.EVEN_ODD
+        cup.moveTo(x - s * 0.52f, y + s * 0.06f)
+        cup.lineTo(x - s * 0.52f, y + s * 0.48f)
+        cup.quadTo(x - s * 0.52f, y + s * 0.70f, x, y + s * 0.70f)
+        cup.quadTo(x + s * 0.52f, y + s * 0.70f, x + s * 0.52f, y + s * 0.48f)
+        cup.lineTo(x + s * 0.52f, y + s * 0.06f)
+        cup.close()
+        cup.moveTo(x - s * 0.38f, y + s * 0.06f)
+        cup.lineTo(x - s * 0.38f, y + s * 0.44f)
+        cup.quadTo(x - s * 0.38f, y + s * 0.56f, x, y + s * 0.56f)
+        cup.quadTo(x + s * 0.38f, y + s * 0.56f, x + s * 0.38f, y + s * 0.44f)
+        cup.lineTo(x + s * 0.38f, y + s * 0.06f)
+        cup.close()
+        canvas.drawPath(cup, micPaint)
+        // ножка
+        canvas.drawRoundRect(
+            x - s * 0.08f, y + s * 0.46f, x + s * 0.08f, y + s * 0.72f,
+            s * 0.08f, s * 0.08f, micPaint
+        )
+        // основание
+        canvas.drawRoundRect(
+            x - s * 0.30f, y + s * 0.66f, x + s * 0.30f, y + s * 0.90f,
+            s * 0.12f, s * 0.12f, micPaint
         )
     }
 

app/src/main/res/drawable/bg_meter.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="@color/surface" />
+    <stroke android:width="1dp" android:color="@color/surface_light" />
+    <corners android:radius="8dp" />
+</shape>

app/src/main/res/drawable/bg_meter_fill_mic.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="@color/danger" />
+    <corners android:radius="8dp" />
+</shape>

app/src/main/res/drawable/bg_meter_fill_rx.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="@color/info" />
+    <corners android:radius="8dp" />
+</shape>

app/src/main/res/drawable/bg_monitor_on.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="#3358A6FF" />
+</shape>

app/src/main/res/drawable/bg_node_toast.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#E61B222A" />
+    <corners android:radius="24dp" />
+    <stroke android:width="1dp" android:color="#40FFFFFF" />
+</shape>

app/src/main/res/drawable/bg_splash.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <gradient
+        android:angle="135"
+        android:startColor="#0D1117"
+        android:centerColor="#101826"
+        android:endColor="#0D1117" />
+</shape>

app/src/main/res/drawable/ic_headset.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#8B949E"
+        android:pathData="M12,1c-4.97,0 -9,4.03 -9,9v7c0,1.66 1.34,3 3,3h3v-8L5,12v-2c0,-3.87 3.13,-7 7,-7s7,3.13 7,7v2h-4v8h3c1.66,0 3,-1.34 3,-3v-7c0,-4.97 -4.03,-9 -9,-9z" />
+</vector>

app/src/main/res/drawable/ic_launcher_fg.xml

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <group
-        android:translateX="30"
-        android:translateY="30"
-        android:scaleX="1.5"
-        android:scaleY="1.5">
-        <path
-            android:fillColor="#FFFFFF"
-            android:pathData="M12,14c1.66,0 2.99,-1.34 2.99,-3L15,5c0,-1.66 -1.34,-3 -3,-3S9,3.34 9,5v6c0,1.66 1.34,3 3,3zM17.3,11c0,3 -2.54,5.1 -5.3,5.1S6.7,14 6.7,11L5,11c0,3.41 2.72,6.23 6,6.72L11,21h2v-3.28c3.28,-0.48 6,-3.3 6,-6.72h-1.7z" />
-    </group>
-</vector>

app/src/main/res/drawable/ic_power.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#8B949E"
+        android:pathData="M13,3h-2v10h2L13,3zM17.83,5.17l-1.42,1.42C17.99,7.86 19,9.81 19,12c0,3.87 -3.13,7 -7,7s-7,-3.13 -7,-7c0,-2.19 1.01,-4.14 2.58,-5.41L6.17,5.17C4.23,6.82 3,9.26 3,12c0,4.97 4.03,9 9,9s9,-4.03 9,-9C21,9.26 19.77,6.82 17.83,5.17z" />
+</vector>

app/src/main/res/layout/activity_main.xml

@@ -4,24 +4,37 @@
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:background="@color/bg"
+    android:gravity="center_horizontal"
     android:padding="16dp">
 
+    <!-- Верхняя панель -->
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         android:gravity="center_vertical">
 
+        <ImageButton
+            android:id="@+id/btn_power"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:src="@drawable/ic_power"
+            android:background="?android:attr/selectableItemBackgroundBorderless"
+            android:contentDescription="@string/btn_power"
+            android:scaleType="centerInside" />
+
+        <Space
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1" />
+
         <TextView
-            android:id="@+id/status_chip"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:paddingHorizontal="14dp"
-            android:paddingVertical="6dp"
+            android:text="@string/app_title"
             android:textColor="@color/text_primary"
-            android:textSize="14sp"
-            android:background="@drawable/bg_chip"
-            android:text="@string/status_disconnected" />
+            android:textSize="20sp"
+            android:textStyle="bold" />
 
         <Space
             android:layout_width="0dp"
@@ -38,63 +51,230 @@
             android:scaleType="centerInside" />
     </LinearLayout>
 
-    <TextView
-        android:id="@+id/lbl_subtitle"
+    <!-- Позывной + комната + группа -->
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="8dp"
-        android:textColor="@color/text_secondary"
-        android:textSize="13sp"
+        android:layout_marginTop="36dp"
+        android:orientation="horizontal"
+        android:gravity="center_vertical">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+
+                <TextView
+                    android:id="@+id/lbl_callsign"
+                    android:layout_width="0dp"
+                    android:layout_weight="1"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="monospace"
+                    android:textColor="@color/text_primary"
+                    android:textSize="22sp"
+                    android:textStyle="bold"
                     android:singleLine="true"
                     android:ellipsize="end"
                     android:text="@string/settings_not_configured" />
 
+                <ImageButton
+                    android:id="@+id/btn_monitor"
+                    android:layout_width="44dp"
+                    android:layout_height="44dp"
+                    android:src="@drawable/ic_headset"
+                    android:background="?android:attr/selectableItemBackgroundBorderless"
+                    android:contentDescription="@string/btn_monitor"
+                    android:scaleType="centerInside" />
+
+                <TextView
+                    android:id="@+id/lbl_tg"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="14dp"
+                    android:textColor="@color/warn"
+                    android:textSize="22sp"
+                    android:textStyle="bold"
+                    android:fontFamily="monospace" />
+            </LinearLayout>
+
+            <TextView
+                android:id="@+id/lbl_subtitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:textColor="@color/text_secondary"
+                android:textSize="14sp"
+                android:singleLine="true"
+                android:ellipsize="end" />
+        </LinearLayout>
+    </LinearLayout>
+
+    <!-- Статус соединения -->
+    <TextView
+        android:id="@+id/status_chip"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:gravity="center"
+        android:textColor="@color/danger"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:text="@string/status_disconnected" />
+
+    <!-- S-метры -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="28dp"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+
+            <TextView
+                android:layout_width="34dp"
+                android:layout_height="wrap_content"
+                android:text="@string/meter_rx"
+                android:textColor="@color/text_secondary"
+                android:textSize="13sp"
+                android:textStyle="bold" />
+
+            <FrameLayout
+                android:layout_width="0dp"
+                android:layout_height="16dp"
+                android:layout_weight="1"
+                android:background="@drawable/bg_meter">
+
+                <View
+                    android:id="@+id/rx_bar_fill"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:background="@drawable/bg_meter_fill_rx"
+                    android:pivotX="0"
+                    android:scaleX="0" />
+            </FrameLayout>
+
+            <TextView
+                android:id="@+id/rx_db"
+                android:layout_width="64dp"
+                android:layout_height="wrap_content"
+                android:gravity="end"
+                android:fontFamily="monospace"
+                android:text="@string/meter_idle"
+                android:textColor="@color/text_primary"
+                android:textSize="13sp" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="10dp"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+
+            <TextView
+                android:layout_width="34dp"
+                android:layout_height="wrap_content"
+                android:text="@string/meter_mic"
+                android:textColor="@color/text_secondary"
+                android:textSize="13sp"
+                android:textStyle="bold" />
+
+            <FrameLayout
+                android:layout_width="0dp"
+                android:layout_height="16dp"
+                android:layout_weight="1"
+                android:background="@drawable/bg_meter">
+
+                <View
+                    android:id="@+id/mic_bar_fill"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:background="@drawable/bg_meter_fill_mic"
+                    android:pivotX="0"
+                    android:scaleX="0" />
+            </FrameLayout>
+
+            <TextView
+                android:id="@+id/mic_db"
+                android:layout_width="64dp"
+                android:layout_height="wrap_content"
+                android:gravity="end"
+                android:fontFamily="monospace"
+                android:text="@string/meter_idle"
+                android:textColor="@color/text_primary"
+                android:textSize="13sp" />
+        </LinearLayout>
+    </LinearLayout>
+
+    <!-- Последний говоривший -->
     <TextView
         android:id="@+id/lbl_talker_title"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="28dp"
+        android:layout_marginTop="24dp"
+        android:gravity="center"
         android:textColor="@color/text_secondary"
-        android:textSize="14sp"
-        android:text="@string/talker_none" />
+        android:textSize="13sp"
+        android:text="@string/talker_last_none" />
 
     <TextView
         android:id="@+id/lbl_talker"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="4dp"
+        android:gravity="center"
         android:textColor="@color/accent"
-        android:textSize="28sp"
+        android:textSize="22sp"
         android:textStyle="bold"
         android:singleLine="true"
-        android:ellipsize="end"
-        android:text="@string/talker_none" />
+        android:ellipsize="end" />
 
     <Space
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1" />
 
-    <ru.ua1zbe.svxremote.ui.LevelMeter
-        android:id="@+id/level_meter"
-        android:layout_width="match_parent"
-        android:layout_height="30dp" />
-
+    <!-- Кнопка PTT -->
     <ru.ua1zbe.svxremote.ui.PttButton
         android:id="@+id/ptt_button"
-        android:layout_width="match_parent"
-        android:layout_height="220dp"
-        android:layout_marginTop="24dp"
-        android:layout_marginBottom="12dp" />
+        android:layout_width="130dp"
+        android:layout_height="130dp" />
 
     <TextView
         android:id="@+id/lbl_ptt_hint"
-        android:layout_width="match_parent"
+        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="14dp"
         android:gravity="center"
         android:textColor="@color/text_secondary"
-        android:textSize="13sp"
-        android:text="@string/ptt_hint" />
+        android:textSize="14sp"
+        android:textStyle="bold"
+        android:text="@string/hold_to_talk" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" />
+
+    <!-- Нижняя зона статуса (кликабельна) -->
+    <LinearLayout
+        android:id="@+id/connect_zone"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="8dp"
+        android:clickable="true"
+        android:focusable="true">
 
         <TextView
             android:id="@+id/lbl_tx_state"
@@ -104,17 +284,17 @@
             android:textColor="@color/danger"
             android:textSize="14sp"
             android:textStyle="bold"
-        android:visibility="gone"
-        android:text="@string/ptt_talking" />
+            android:text="@string/status_big_disconnected" />
 
-    <Button
-        android:id="@+id/btn_connect"
+        <TextView
+            android:id="@+id/lbl_connect_hint"
             android:layout_width="match_parent"
-        android:layout_height="52dp"
-        android:layout_marginTop="12dp"
-        android:text="@string/btn_connect"
-        android:textColor="#0D1117"
-        android:background="@drawable/bg_primary_btn"
-        android:textSize="16sp"
-        android:textStyle="bold" />
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:gravity="center"
+            android:textColor="@color/text_secondary"
+            android:textSize="12sp"
+            android:textStyle="italic"
+            android:text="@string/hint_connect" />
+    </LinearLayout>
 </LinearLayout>

app/src/main/res/layout/activity_settings.xml

@@ -110,7 +110,7 @@
             android:id="@+id/input_tg"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginBottom="24dp"
+            android:layout_marginBottom="16dp"
             android:inputType="number"
             android:textColor="@color/text_primary"
             android:textColorHint="@color/text_secondary"
@@ -119,6 +119,35 @@
             android:padding="12dp"
             android:hint="11" />
 
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_groups"
+            android:textColor="@color/text_primary"
+            android:textSize="15sp" />
+
+        <EditText
+            android:id="@+id/input_groups"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="24dp"
+            android:inputType="text"
+            android:textColor="@color/text_primary"
+            android:textColorHint="@color/text_secondary"
+            android:textSize="16sp"
+            android:background="@drawable/bg_input"
+            android:padding="12dp"
+            android:hint="9, 11, 12, 13" />
+
+        <CheckBox
+            android:id="@+id/chk_node_toasts"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="24dp"
+            android:text="@string/pref_node_toasts"
+            android:textColor="@color/text_primary"
+            android:textSize="15sp" />
+
         <Button
             android:id="@+id/btn_save"
             android:layout_width="match_parent"
@@ -128,5 +157,15 @@
             android:background="@drawable/bg_primary_btn"
             android:textSize="16sp"
             android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/lbl_version"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:gravity="center"
+            android:text="@string/app_version"
+            android:textColor="@color/text_secondary"
+            android:textSize="12sp" />
     </LinearLayout>
 </ScrollView>

app/src/main/res/layout/activity_splash.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/bg_splash">
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:orientation="vertical"
+        android:gravity="center">
+
+        <TextView
+            android:id="@+id/splash_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="SVXhomyak"
+            android:textColor="@color/text_primary"
+            android:textSize="34sp"
+            android:textStyle="bold"
+            android:letterSpacing="0.08"
+            android:alpha="0" />
+
+        <TextView
+            android:id="@+id/splash_subtitle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="10dp"
+            android:text="СВЯЗЬ ЧЕРЕЗ СЕРВЕР"
+            android:textColor="@color/text_secondary"
+            android:textSize="12sp"
+            android:letterSpacing="0.3"
+            android:alpha="0" />
+
+        <View
+            android:id="@+id/splash_line"
+            android:layout_width="48dp"
+            android:layout_height="2dp"
+            android:layout_marginTop="16dp"
+            android:background="@color/info"
+            android:alpha="0" />
+    </LinearLayout>
+</FrameLayout>

app/src/main/res/layout/view_node_toast.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/node_toast_root"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:background="@drawable/bg_node_toast"
+    android:paddingLeft="24dp"
+    android:paddingRight="24dp"
+    android:paddingTop="14dp"
+    android:paddingBottom="14dp">
+
+    <TextView
+        android:id="@+id/lbl_node_toast"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:textColor="#F0F0F0"
+        android:textSize="16sp"
+        android:textStyle="bold" />
+</FrameLayout>

app/src/main/res/values/strings.xml

@@ -9,17 +9,49 @@
     <string name="pref_callsign">Позывной</string>
     <string name="pref_auth_key">Пароль (AUTH_KEY)</string>
     <string name="pref_tg">Группа вещания (TG)</string>
+    <string name="pref_groups">Группы для переключения (через запятую)</string>
+    <string name="select_tg">Выбор группы</string>
+    <string name="toast_groups_empty">Добавьте группы в настройках</string>
+    <string name="nodes_title">Узлы в сети (%1$d)</string>
+    <string name="toast_nodes_empty">Нет подключенных узлов</string>
+    <string name="pref_node_toasts">Всплывающее уведомление о подключении/отключении узлов</string>
+    <string name="toast_node_joined">Подключился: %1$s%2$s</string>
+    <string name="toast_node_left">Отключился: %1$s%2$s</string>
+    <string name="node_tg_suffix"> (группа %1$d)</string>
+    <string name="node_with_tg">%1$s — TG%2$d</string>
     <string name="btn_save">Сохранить</string>
+    <string name="app_version">SVXhomyak — v1.0.4</string>
     <string name="saved">Сохранено</string>
     <string name="pref_callsign_hint">например UA1ZBE</string>
 
     <string name="status_disconnected">Отключено</string>
+    <string name="app_title">SVXHomyak</string>
+    <string name="btn_power">Выключить: отключиться и закрыть</string>
+    <string name="btn_monitor">Мониторинг групп (нажмите, чтобы включить)</string>
+    <string name="btn_monitor_on">Мониторинг групп включен (нажмите, чтобы выключить)</string>
+    <string name="status_monitoring">Мониторинг: %1$s</string>
+    <string name="talker_mon">Говорит: %1$s · TG%2$d</string>
+    <string name="talker_mon_priority">ПРИОРИТЕТ: %1$s · TG%2$d</string>
+    <string name="status_big_disconnected">DISCONNECTED</string>
+    <string name="status_big_connected">CONNECTED</string>
+    <string name="status_big_talking">ПЕРЕДАЧА</string>
+    <string name="hint_connect">Нажмите, чтобы подключиться</string>
+    <string name="hint_disconnect">Нажмите, чтобы отключиться</string>
+    <string name="hold_to_talk">HOLD TO TALK</string>
+    <string name="meter_rx">RX</string>
+    <string name="meter_mic">MIC</string>
+    <string name="meter_idle">---</string>
+    <string name="meter_db">-%1$d dB</string>
+    <string name="tg_badge">TG%1$d ▾</string>
+    <string name="talker_last_none">Последний: —</string>
     <string name="status_connecting">Подключение…</string>
     <string name="status_connecting_ssl">Проверка ключа…</string>
     <string name="status_connected">На связи</string>
     <string name="status_auth_failed">Ошибка авторизации</string>
     <string name="status_error">Ошибка: %1$s</string>
     <string name="notif_connected">Соединение с рефлектором активно</string>
+    <string name="notif_talking">Говорит: %1$s</string>
+    <string name="notif_last_talker">Последний: %1$s</string>
 
     <string name="btn_connect">Подключиться</string>
     <string name="btn_disconnect">Отключиться</string>
@@ -44,4 +76,11 @@
 
     <string name="settings_not_configured">Настройки не заданы</string>
     <string name="ptt_disabled">Нет связи</string>
+
+    <string name="update_available_title">Доступно обновление</string>
+    <string name="update_available_msg">Версия %1$s уже вышла. Обновить приложение?</string>
+    <string name="update_btn">Обновить</string>
+    <string name="update_later">Позже</string>
+    <string name="update_downloading">Загрузка обновления…</string>
+    <string name="update_failed">Не удалось загрузить обновление: %1$s</string>
 </resources>