Support Android 12 and above.

vector/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN"
         android:usesPermissionFlags="neverForLocation"
-        tools:targetApi="s" />
+        tools:targetApi="tiramisu" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

vector/src/main/java/im/vector/app/features/widgets/WidgetFragment.kt

@@ -20,6 +20,8 @@ import android.app.Activity
 import android.bluetooth.BluetoothDevice
 import android.content.Intent
 import android.content.pm.PackageManager
+import android.media.AudioDeviceInfo
+import android.media.AudioManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
@@ -32,8 +34,10 @@ import android.view.ViewGroup
 import android.webkit.PermissionRequest
 import android.webkit.WebMessage
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
+import androidx.core.content.getSystemService
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.Fail
@@ -120,6 +124,9 @@ class WidgetFragment :
             if (checkPermissions(PERMISSIONS_FOR_BLUETOOTH, requireActivity(), scanBluetoothResultLauncher)) {
                 startBluetoothScanning()
             }
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+                configureAudioDevice()
+            }
         }
 
         viewModel.observeViewEvents {
@@ -136,6 +143,18 @@ class WidgetFragment :
         viewModel.handle(WidgetAction.LoadFormattedUrl)
     }
 
+    @RequiresApi(Build.VERSION_CODES.S)
+    private fun configureAudioDevice() {
+        requireContext().getSystemService<AudioManager>()?.let { audioManager ->
+            audioManager
+                    .availableCommunicationDevices
+                    .find { it.type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO }
+                    ?.let { bluetoothAudioDevice ->
+                        audioManager.setCommunicationDevice(bluetoothAudioDevice)
+                    }
+        }
+    }
+
     private val termsActivityResultLauncher = registerStartForActivityResult {
         Timber.v("On terms results")
         if (it.resultCode == Activity.RESULT_OK) {
@@ -444,6 +463,7 @@ class WidgetFragment :
         activity?.let {
             val widgetUri = Uri.parse(fragmentArgs.baseUrl)
 
+            Timber.d("### WidgetFragment.handleBluetoothDeviceData: $event")
             if (event.data contentEquals byteArrayOf(0x00)) {
                 views.widgetWebView.postWebMessage(WebMessage("pttr"), widgetUri)
             } else if (event.data contentEquals byteArrayOf(0x01)) {

vector/src/main/java/im/vector/app/features/widgets/ptt/BluetoothLowEnergyService.kt

@@ -141,7 +141,7 @@ class BluetoothLowEnergyService : VectorAndroidService() {
 
     private fun onCharacteristicRead(characteristic: BluetoothGattCharacteristic) {
         @Suppress("DEPRECATION") val data = characteristic.value
-        Timber.d("### BluetoothLowEnergyService. $data")
+        Timber.d("### BluetoothLowEnergyService.onCharacteristicRead ${String(data)}")
         if (data.isNotEmpty()) {
             callback?.onCharacteristicRead(data)
         }