Adds Remote Media Controls API #862
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| /* | ||
| * Copyright 2026 The Android Open Source Project | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.example.wear.snippets.audio | ||
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| import android.app.Application | ||
| import android.media.session.MediaSession | ||
| import android.media.session.MediaSessionManager | ||
| import android.os.Build | ||
| import androidx.annotation.RequiresApi | ||
| import androidx.core.content.ContextCompat | ||
| import androidx.lifecycle.AndroidViewModel | ||
| import androidx.media3.common.Player | ||
| import androidx.media3.session.MediaController | ||
| import androidx.media3.session.SessionToken | ||
| import java.util.concurrent.Executor | ||
| import kotlinx.coroutines.ExperimentalCoroutinesApi | ||
| import kotlinx.coroutines.channels.awaitClose | ||
| import kotlinx.coroutines.channels.trySendBlocking | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.callbackFlow | ||
| import kotlinx.coroutines.flow.distinctUntilChanged | ||
| import kotlinx.coroutines.flow.flatMapLatest | ||
| import kotlinx.coroutines.flow.map | ||
| import kotlinx.coroutines.guava.await | ||
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| class RemoteMediaActivityViewModel(application: Application) : AndroidViewModel(application) { | ||
| private val mediaSessionManager = application.getSystemService(MediaSessionManager::class.java) | ||
| private val mainExecutor: Executor = ContextCompat.getMainExecutor(application) | ||
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| @RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT) | ||
| private val sessionFlow: Flow<List<MediaSession.Token>> = callbackFlow { | ||
| // [START android_wear_remote_media_session_listener] | ||
| val callback = | ||
| MediaSessionManager.OnActiveSessionsChangedListener { controllers -> | ||
| val tokens = controllers?.map { it.sessionToken } ?: emptyList() | ||
| trySendBlocking(tokens) | ||
| } | ||
| // [END android_wear_remote_media_session_listener] | ||
| // [START android_wear_remote_media_session_register_listener] | ||
| mediaSessionManager.addOnActiveSessionsForPackageChangedListener( | ||
| application.packageName, | ||
| mainExecutor, | ||
| callback, | ||
| ) | ||
| // [END android_wear_remote_media_session_register_listener] | ||
| // [START android_wear_remote_media_session_get_sessions] | ||
| trySendBlocking(mediaSessionManager.getActiveSessionsForPackage(application.packageName)) | ||
| // [END android_wear_remote_media_session_get_sessions] | ||
| // [START android_wear_remote_media_session_remove_listener] | ||
| awaitClose { mediaSessionManager.removeOnActiveSessionsForPackageChangedListener(callback) } | ||
| // [END android_wear_remote_media_session_remove_listener] | ||
| } | ||
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| @OptIn(ExperimentalCoroutinesApi::class) | ||
| @RequiresApi(37) | ||
| // [START android_wear_remote_media_session_media_controller] | ||
| private val controllerFlow: Flow<MediaController?> = | ||
| sessionFlow | ||
| .distinctUntilChanged() | ||
| .flatMapLatest { tokens -> | ||
| val token = tokens.firstOrNull() ?: return@flatMapLatest kotlinx.coroutines.flow.flowOf(null) | ||
| callbackFlow { | ||
| val sessionToken = SessionToken.createSessionToken(application, token).await() | ||
| val controller = MediaController.Builder(application, sessionToken).buildAsync().await() | ||
| val listener = object : Player.Listener { | ||
| override fun onEvents(player: Player, events: Player.Events) { | ||
| trySendBlocking(controller) | ||
| } | ||
| } | ||
| controller.addListener(listener) | ||
| trySendBlocking(controller) | ||
| awaitClose { | ||
| controller.removeListener(listener) | ||
| controller.release() | ||
| } | ||
| } | ||
| } | ||
| // [END android_wear_remote_media_session_media_controller] | ||
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| // [START android_wear_remote_media_session_listen_events] | ||
| private val MediaController.controllerEventFlow: Flow<Unit> | ||
| get() = | ||
| callbackFlow<Unit> { | ||
| val listener = | ||
| object : Player.Listener { | ||
| override fun onEvents(player: Player, events: Player.Events) { | ||
| trySendBlocking(Unit) | ||
| } | ||
| } | ||
| this@controllerEventFlow.addListener(listener) | ||
| awaitClose { this@controllerEventFlow.removeListener(listener) } | ||
| } | ||
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| // [END android_wear_remote_media_session_listen_events] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * Copyright 2026 The Android Open Source Project | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
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| package com.example.wear.snippets.audio | ||
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| import android.os.Build | ||
| import android.os.Bundle | ||
| import androidx.activity.ComponentActivity | ||
| import androidx.activity.compose.setContent | ||
| import androidx.lifecycle.ViewModelProvider | ||
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| class RemoteMediaSessionActivity : ComponentActivity() { | ||
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| private lateinit var viewModel: RemoteMediaActivityViewModel | ||
|
Contributor
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| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| if (Build.VERSION.SDK_INT >= 37) { | ||
| viewModel = ViewModelProvider(this)[RemoteMediaActivityViewModel::class.java] | ||
| setContent { | ||
| // set the UI content here | ||
| } | ||
| } | ||
| } | ||
| } | ||
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Should this be a code snippet to be documented in DAC?