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kul3r4kul3r4
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Adds Remote Media Controls API
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+136
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5 files changed

+136
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‎gradle/libs.versions.toml‎

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@@ -179,6 +179,7 @@ androidx-material-icons-core = { module = "androidx.compose.material:material-ic
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androidx-media3-common = { module = "androidx.media3:media3-common", version.ref = "media3" }
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androidx-media3-exoplayer = { module = "androidx.media3:media3-exoplayer", version.ref = "media3" }
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androidx-media3-ui = { module = "androidx.media3:media3-ui", version.ref = "media3Ui" }
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androidx-media3-session = { module = "androidx.media3:media3-session", version.ref = "media3" }
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androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "androidx-navigation" }
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androidx-navigation3-runtime = { module = "androidx.navigation3:navigation3-runtime", version.ref = "androidx-navigation3" }
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androidx-navigation3-ui = { module = "androidx.navigation3:navigation3-ui", version.ref = "androidx-navigation3" }

‎wear/build.gradle.kts‎

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@@ -8,7 +8,7 @@ plugins {
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android {
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namespace = "com.example.wear"
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compileSdk = 36
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compileSdkPreview = "CinnamonBun"
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defaultConfig {
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applicationId = "com.example.wear"
@@ -35,6 +35,7 @@ android {
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sourceCompatibility = JavaVersion.VERSION_21
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targetCompatibility = JavaVersion.VERSION_21
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}
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useLibrary("wear-sdk")
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kotlin {
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jvmToolchain(21)
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compilerOptions {
@@ -64,6 +65,7 @@ dependencies {
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implementation((libs.androidx.credentials.play.services.auth))
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implementation(libs.androidx.media3.exoplayer)
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implementation(libs.androidx.media3.ui)
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implementation(libs.androidx.media3.session)
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implementation(libs.androidx.wear.input)
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implementation(libs.androidx.wear.phone.interactions)
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implementation(libs.android.identity.googleid)

‎wear/src/main/AndroidManifest.xml‎

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@@ -424,6 +424,22 @@
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</service>
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<!-- [END android_wear_datalayer_mywearablelistenerservice_manifest] -->
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<activity
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android:name=".snippets.audio.RemoteMediaSessionActivity"
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android:exported="true"
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android:taskAffinity="">
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<!-- [START android_wear_remote_media_session_manifest] -->
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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<!-- [END android_wear_remote_media_session_manifest] -->
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<intent-filter>
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<action android:name="com.google.wear.services.media.action.REMOTE_MEDIA_ACTIVITY" />
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<category android:name="android.intent.category.DEFAULT" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎wear/src/main/java/com/example/wear/snippets/audio/RemoteMediaSession.kt‎

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@@ -0,0 +1,94 @@
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package com.example.wear.snippets.audio
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import android.app.Application
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import android.media.session.MediaSession
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import android.media.session.MediaSessionManager
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import android.os.Build
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import androidx.annotation.RequiresApi
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import androidx.core.content.ContextCompat
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import androidx.lifecycle.AndroidViewModel
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import androidx.media3.common.Player
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import androidx.media3.session.MediaController
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import androidx.media3.session.SessionToken
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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import kotlinx.coroutines.channels.awaitClose
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import kotlinx.coroutines.channels.trySendBlocking
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.callbackFlow
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import kotlinx.coroutines.flow.distinctUntilChanged
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import kotlinx.coroutines.flow.flatMapLatest
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import kotlinx.coroutines.flow.map
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import kotlinx.coroutines.flow.mapNotNull
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import kotlinx.coroutines.guava.await
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import java.util.concurrent.Executor
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class RemoteMediaActivityViewModel(application: Application) : AndroidViewModel(application) {
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private val mediaSessionManager = application.getSystemService(MediaSessionManager::class.java)
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private val mainExecutor: Executor = ContextCompat.getMainExecutor(application)
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@RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT)
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private val sessionFlow: Flow<List<MediaSession.Token>> = callbackFlow {
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// [START android_wear_remote_media_session_listener]
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val callback =
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MediaSessionManager.OnActiveSessionsChangedListener { controllers ->
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val tokens = controllers?.map { it.sessionToken } ?: emptyList()
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trySendBlocking(tokens)
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}
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// [END android_wear_remote_media_session_listener]
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// [START android_wear_remote_media_session_register_listener]
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mediaSessionManager.addOnActiveSessionsForPackageChangedListener(
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application.packageName,
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mainExecutor,
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callback,
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)
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// [END android_wear_remote_media_session_register_listener]
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// [START android_wear_remote_media_session_get_sessions]
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trySendBlocking(mediaSessionManager.getActiveSessionsForPackage(application.packageName))
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// [END android_wear_remote_media_session_get_sessions]
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// [START android_wear_remote_media_session_remove_listener]
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awaitClose { mediaSessionManager.removeOnActiveSessionsForPackageChangedListener(callback) }
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// [END android_wear_remote_media_session_remove_listener]
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}
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@OptIn(ExperimentalCoroutinesApi::class)
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@RequiresApi(37)
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// [START android_wear_remote_media_session_media_controller]
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private val controllerFlow: Flow<MediaController?> =
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sessionFlow
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.distinctUntilChanged()
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.flatMapLatest { tokens ->
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val token = tokens.firstOrNull() ?: return@flatMapLatest kotlinx.coroutines.flow.flowOf(null)
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callbackFlow {
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val sessionToken = SessionToken.createSessionToken(application, token).await()
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val controller = MediaController.Builder(application, sessionToken).buildAsync().await()
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val listener = object : Player.Listener {
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override fun onEvents(player: Player, events: Player.Events) {
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trySendBlocking(controller)
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}
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}
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controller.addListener(listener)
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trySendBlocking(controller)
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awaitClose {
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controller.removeListener(listener)
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controller.release()
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}
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}
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}
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// [END android_wear_remote_media_session_media_controller]
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// [START android_wear_remote_media_session_listen_events]
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private val MediaController.controllerEventFlow: Flow<Unit>
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get() =
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callbackFlow<Unit> {
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val listener =
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object : Player.Listener {
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override fun onEvents(player: Player, events: Player.Events) {
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trySendBlocking(Unit)
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}
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}
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this@controllerEventFlow.addListener(listener)
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awaitClose { this@controllerEventFlow.removeListener(listener) }
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}
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// [END android_wear_remote_media_session_listen_events]
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}

‎wear/src/main/java/com/example/wear/snippets/audio/RemoteMediaSessionActivity.kt‎

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package com.example.wear.snippets.audio
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import android.os.Build
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import android.os.Bundle
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import androidx.activity.ComponentActivity
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import androidx.activity.compose.setContent
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import androidx.lifecycle.ViewModelProvider
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class RemoteMediaSessionActivity : ComponentActivity() {
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private lateinit var viewModel: RemoteMediaActivityViewModel
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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if (Build.VERSION.SDK_INT >= 37) {
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viewModel = ViewModelProvider(this)[RemoteMediaActivityViewModel::class.java]
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setContent {
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// set the UI content here
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}
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}
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}
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}

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