添加多播放器示例demo.

demos/multi-track/src/main/AndroidManifest.xml

@@ -6,7 +6,6 @@
  android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
- android:roundIcon="@mipmap/ic_launcher_round"
  android:supportsRtl="true"
  android:theme="@style/Theme.ExoPlayer">
  <activity
@@ -18,6 +17,8 @@
  <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
  </activity>
+
+ <activity android:name=".MultiPlayerActivity" />
  </application>
 
 </manifest>

demos/multi-track/src/main/java/com/github/qingmei2/exoplayer/multi_track/MainActivity.kt

@@ -2,10 +2,18 @@ package com.github.qingmei2.exoplayer.multi_track
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.view.View
 
 class MainActivity : AppCompatActivity() {
+
  override fun onCreate(savedInstanceState: Bundle?) {
  super.onCreate(savedInstanceState)
  setContentView(R.layout.activity_main)
+
+ findViewById<View>(R.id.btn_multi_player).setOnClickListener(this::onMultiPlayerClicked)
+ }
+
+ private fun onMultiPlayerClicked(view: View) {
+ MultiPlayerActivity.launch(this)
  }
 }

demos/multi-track/src/main/java/com/github/qingmei2/exoplayer/multi_track/MultiPlayerActivity.kt

@@ -0,0 +1,149 @@
+package com.github.qingmei2.exoplayer.multi_track
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.view.View
+import android.widget.SeekBar
+import androidx.appcompat.app.AppCompatActivity
+import com.github.qingmei2.exoplayer.multi_track.utils.DemoDataSources
+import com.google.android.exoplayer2.DefaultRenderersFactory
+import com.google.android.exoplayer2.ExoPlayer
+import com.google.android.exoplayer2.SimpleExoPlayer
+import com.google.android.exoplayer2.ui.StyledPlayerView
+import java.util.*
+
+class MultiPlayerActivity : AppCompatActivity() {
+
+ companion object Launcher {
+
+ fun launch(context: Context) {
+ val intent = Intent(context, MultiPlayerActivity::class.java)
+ context.startActivity(intent)
+ }
+ }
+
+ private lateinit var mBtnPlayTrack1: View
+ private lateinit var mBtnPlayTrack2: View
+
+ private lateinit var mSeekBar1: SeekBar
+ private lateinit var mSeekBar2: SeekBar
+
+ private lateinit var mExoPlayer1: ExoPlayer
+ private lateinit var mExoPlayer2: ExoPlayer
+
+ private lateinit var mExoVideoView: StyledPlayerView
+ private lateinit var mExoVideoPlayer: ExoPlayer
+
+ private var mTimer: Timer? = null
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ setContentView(R.layout.activity_multi_player)
+
+ mBtnPlayTrack1 = findViewById(R.id.btn_play_track1)
+ mBtnPlayTrack2 = findViewById(R.id.btn_play_track2)
+
+ mSeekBar1 = findViewById(R.id.seek_bar_01)
+ mSeekBar2 = findViewById(R.id.seek_bar_02)
+
+ mExoVideoView = findViewById(R.id.player_view)
+
+ initVideoPlayer()
+ initAudioPlayer()
+ initSeekbars()
+ }
+
+ private fun initVideoPlayer() {
+ mExoVideoPlayer = SimpleExoPlayer.Builder(this).build()
+ .apply {
+ mExoVideoView.player = this
+ addMediaItem(DemoDataSources.Assets.SUNNY_MP4)
+ prepare()
+ }
+ }
+
+ private fun initAudioPlayer() {
+ mExoPlayer1 = SimpleExoPlayer.Builder(this, DefaultRenderersFactory(this)).build()
+ .apply {
+ addMediaItem(DemoDataSources.Assets.SUMMER_MP3)
+ prepare()
+ }
+
+ mExoPlayer2 = SimpleExoPlayer.Builder(this, DefaultRenderersFactory(this)).build()
+ .apply {
+ addMediaItem(DemoDataSources.Assets.HALF_MOON_MP3)
+ prepare()
+ }
+
+ mBtnPlayTrack1.setOnClickListener {
+ if (mExoPlayer1.isPlaying) {
+ mExoPlayer1.pause()
+ } else {
+ mExoPlayer1.play()
+ }
+ }
+
+ mBtnPlayTrack2.setOnClickListener {
+ if (mExoPlayer2.isPlaying) {
+ mExoPlayer2.pause()
+ } else {
+ mExoPlayer2.play()
+ }
+ }
+ }
+
+ private fun initSeekbars() {
+ mSeekBar1.setOnSeekBarChangeListener(SimpleSeekBarListener(mExoPlayer1))
+ mSeekBar2.setOnSeekBarChangeListener(SimpleSeekBarListener(mExoPlayer2))
+ }
+
+ private fun startTimer() {
+ stopTimer()
+ mTimer = Timer().apply {
+ scheduleAtFixedRate(object : TimerTask() {
+ override fun run() {
+ mSeekBar1.post {
+ val durationSec = mExoPlayer1.duration / 1000L
+ val curDurationSec = mExoPlayer1.currentPosition / 1000L
+ mSeekBar1.max = durationSec.toInt()
+ mSeekBar1.progress = curDurationSec.toInt()
+ }
+
+ mSeekBar2.post {
+ val durationSec1 = mExoPlayer2.duration / 1000L
+ val curDurationSec1 = mExoPlayer2.currentPosition / 1000L
+ mSeekBar2.max = durationSec1.toInt()
+ mSeekBar2.progress = curDurationSec1.toInt()
+ }
+ }
+ }, 1000L, 1000L)
+ }
+ }
+
+ private fun stopTimer() {
+ mTimer?.apply {
+ cancel()
+ purge()
+ }
+ mTimer = null
+ }
+
+ override fun onResume() {
+ super.onResume()
+ startTimer()
+ }
+
+ override fun onPause() {
+ super.onPause()
+ stopTimer()
+ }
+
+ override fun onDestroy() {
+ super.onDestroy()
+ mExoPlayer1.stop()
+ mExoPlayer1.release()
+ mExoPlayer2.stop()
+ mExoPlayer2.release()
+ }
+}

demos/multi-track/src/main/java/com/github/qingmei2/exoplayer/multi_track/SimpleSeekBarListener.kt

@@ -0,0 +1,22 @@
+package com.github.qingmei2.exoplayer.multi_track
+
+import android.widget.SeekBar
+import androidx.annotation.RestrictTo
+import com.google.android.exoplayer2.Player
+
+@RestrictTo(RestrictTo.Scope.LIBRARY)
+class SimpleSeekBarListener(private val player: Player) : SeekBar.OnSeekBarChangeListener {
+
+ override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
+ if (progress == 0 || seekBar.max == 0) return;
+ if (fromUser) {
+ player.seekTo(progress * 1000L);
+ }
+ }
+
+ override fun onStartTrackingTouch(seekBar: SeekBar) {
+ }
+
+ override fun onStopTrackingTouch(seekBar: SeekBar) {
+ }
+}

demos/multi-track/src/main/java/com/github/qingmei2/exoplayer/multi_track/utils/DemoDataSources.kt

@@ -0,0 +1,27 @@
+package com.github.qingmei2.exoplayer.multi_track.utils
+
+import android.net.Uri
+import com.google.android.exoplayer2.MediaItem
+
+object DemoDataSources {
+
+ object Assets {
+
+ private const val SUMMER_MP3_URL = "asset:https:///media/summer.mp3"
+ private const val HALF_MOON_MP3_URL = "asset:https:///media/half_moon.mp3"
+
+ private const val SUNNY_MP4_URL = "asset:https:///media/sunny.mp4"
+
+ // 菊次郎的夏天.mp3
+ val SUMMER_MP3: MediaItem
+ get() = MediaItem.fromUri(Uri.parse(SUMMER_MP3_URL))
+
+ // 月半小夜曲.mp3
+ val HALF_MOON_MP3: MediaItem
+ get() = MediaItem.fromUri(Uri.parse(HALF_MOON_MP3_URL))
+
+ // 晴天.mp4
+ val SUNNY_MP4: MediaItem
+ get() = MediaItem.fromUri(Uri.parse(SUNNY_MP4_URL))
+ }
+}