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Player is accessed on the wrong thread.
See original GitHub issueExoPlayer Version
2.17.1
Devices that reproduce the issue
Vivo V2027 Android 12 (SDK 31) Vivo V2130 Android 12 (SDK 31) Vivo V2132 Android 12 (SDK 31) Vivo X80 Android 12 (SDK 31) Vivo V2146 Android 11 (SDK 30)
Devices that do not reproduce the issue
POCO X3 Android 12 (SDK 31) Samsung A32 Android 11 (SDK 30) Infinix Note 7 Android 10 (SDK 29) Sony Xperia ZX3 Android 10 (SDK 29)
Reproducible in the demo app?
No
Reproduction steps
none
Expected result
don’t crash
Actual result
exception.class.missing._Unknown_: java.lang.IllegalStateException Player is accessed on the wrong thread.
at android.app.ActivityThread.handleStopService (ActivityThread.java:5021)
at android.app.ActivityThread.access$2400 (ActivityThread.java:284)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2327)
at android.os.Handler.dispatchMessage (Handler.java:106)
at android.os.Looper.loopOnce (Looper.java:233)
at android.os.Looper.loop (Looper.java:334)
at android.app.ActivityThread.main (ActivityThread.java:8399)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:582)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1068)
Caused by: java.lang.IllegalStateException:
at com.google.android.exoplayer2.ExoPlayerImpl.verifyApplicationThread (ExoPlayerImpl.java)
at com.google.android.exoplayer2.ExoPlayerImpl.getCurrentTimeline (ExoPlayerImpl.java)
at com.google.android.exoplayer2.analytics.DefaultAnalyticsCollector.K (DefaultAnalyticsCollector.java:25)
at com.google.android.exoplayer2.analytics.DefaultAnalyticsCollector.generateEventTime (DefaultAnalyticsCollector.java)
at com.google.android.exoplayer2.analytics.DefaultAnalyticsCollector.generateReadingMediaPeriodEventTime (DefaultAnalyticsCollector.java)
at com.google.android.exoplayer2.analytics.DefaultAnalyticsCollector.onSurfaceSizeChanged (DefaultAnalyticsCollector.java)
at com.google.android.exoplayer2.ExoPlayerImpl.lambda$maybeNotifySurfaceSizeChanged$28 (ExoPlayerImpl.java)
at com.google.android.exoplayer2.ExoPlayerImpl$$InternalSyntheticLambda$0$2d4737b778d7b8503f2f9305c33da9d50db855343d46ce9f1ebd9b998f070724$0.invoke (ExoPlayerImpl.java)
at com.google.android.exoplayer2.util.ListenerSet$ListenerHolder.invoke (ListenerSet.java)
at com.google.android.exoplayer2.util.ListenerSet.lambda$queueEvent$0 (ListenerSet.java)
at com.google.android.exoplayer2.util.ListenerSet$$InternalSyntheticLambda$1$4aa6d67c50ced20c53fd0cecd314136314e77eb5e787a34f9137864aa48c8e5a$0.run (ListenerSet.java)
at com.google.android.exoplayer2.util.ListenerSet.flushEvents (ListenerSet.java:66)
at com.google.android.exoplayer2.util.ListenerSet.sendEvent (ListenerSet.java)
at com.google.android.exoplayer2.ExoPlayerImpl.maybeNotifySurfaceSizeChanged (ExoPlayerImpl.java)
at com.google.android.exoplayer2.ExoPlayerImpl.access$1800 (ExoPlayerImpl.java)
at com.google.android.exoplayer2.ExoPlayerImpl$ComponentListener.surfaceDestroyed (ExoPlayerImpl.java)
at android.service.wallpaper.WallpaperService$Engine.reportSurfaceDestroyed (WallpaperService.java:1945)
at android.service.wallpaper.WallpaperService$Engine.detach (WallpaperService.java:1971)
at android.service.wallpaper.WallpaperService.onDestroy (WallpaperService.java:2400)
at android.app.ActivityThread.handleStopService (ActivityThread.java:5001)
at android.app.ActivityThread.access$2400 (ActivityThread.java:284)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2327)
at android.os.Handler.dispatchMessage (Handler.java:106)
at android.os.Looper.loopOnce (Looper.java:233)
at android.os.Looper.loop (Looper.java:334)
at android.app.ActivityThread.main (ActivityThread.java:8399)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:582)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1068)
Code
open class MovieLiveWallpaperService : WallpaperService() {
private var contexts: Activity? = null
enum class Mode {
FIT_CENTER,
FIT_START,
FIT_END,
FIT_XY,
CENTER_CROP
}
private val mode: Mode
get() = AppSharedPreferences
.getStringDefValue(this,"scale_type", Mode.CENTER_CROP.name).let(
Mode::valueOf)
fun setToWallPaper(activity: Activity) {
Utility.sendEvent("Live_Engine")
contexts = activity
try {
val intent = Intent(WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER)
intent.putExtra(
WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT, ComponentName(
activity,
MovieLiveWallpaperService::class.java
)
)
activity.startActivity(intent)
} catch (ignore: ActivityNotFoundException) {
}
}
override fun onCreateEngine(): Engine = GlEngine()
protected fun initExoMediaPlayer(): ExoPlayer {
val player = this.let { ExoPlayer.Builder(it).build() }
player.videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT
player.playWhenReady = true
player.repeatMode = Player.REPEAT_MODE_ONE
player.volume = 0f
if (mode == Mode.CENTER_CROP) {
player.videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING
} else {
player.videoScalingMode = C.VIDEO_SCALING_MODE_SCALE_TO_FIT
}
if (mode == Mode.FIT_CENTER) {
player.addListener(object : Player.Listener {
override fun onPlayerError(error: PlaybackException) {
super.onPlayerError(error)
contexts?.let {
Toast.makeText(
it,
"${error.message} Something Went Wrong!",
Toast.LENGTH_SHORT
).show()
}
}
})
}
return player
}
inner class GlEngine : WallpaperService.Engine() {
private var exoMediaPlayer = initExoMediaPlayer()
override fun onVisibilityChanged(visible: Boolean) {
exoMediaPlayer.playWhenReady = visible
if (visible) onResume()
else onPause()
}
@Synchronized
override fun onSurfaceCreated(holder: SurfaceHolder) {
kotlin.runCatching {
if (mode == Mode.FIT_CENTER) {
exoMediaPlayer.setVideoSurface(holder.surface)
} else {
exoMediaPlayer.setVideoSurfaceHolder(holder)
}
val videoUri = this@MovieLiveWallpaperService.let {
AppSharedPreferences.getString(
it,
"absolutePath"
)
}
val isLocalVideo =
AppSharedPreferences.getBool(this@MovieLiveWallpaperService, "isLocalVideo")
when {
isLocalVideo -> exoMediaPlayer.setMediaSource(
buildMediaSourceForLocal(
Uri.parse(
videoUri
)
)
)
!isLocalVideo -> exoMediaPlayer.setMediaSource(
buildMediaSource(
Uri.parse(
videoUri
)
)
)
}
exoMediaPlayer.prepare()
exoMediaPlayer.play()
}
}
private fun buildMediaSource(uri: Uri): MediaSource {
val userAgent = "exoplayer-liveWallpaper"
val media_item: MediaItem = MediaItem.fromUri(uri)
val cache_datasource_factory = CacheDataSource.Factory()
.setCache(EngineVideoCache.getInstance(this@MovieLiveWallpaperService))
.setUpstreamDataSourceFactory(
DefaultHttpDataSource.Factory()
.setUserAgent(userAgent)
)
return ProgressiveMediaSource.Factory(cache_datasource_factory)
.createMediaSource(media_item)
}
private fun buildMediaSourceForLocal(uri: Uri): MediaSource {
val media_item: MediaItem = MediaItem.fromUri(uri)
val dataSource = CacheDataSource.Factory()
.setCache(EngineVideoCache.getInstance(this@MovieLiveWallpaperService))
.setUpstreamDataSourceFactory(DefaultDataSource.Factory(this@MovieLiveWallpaperService))
return ProgressiveMediaSource.Factory(dataSource)
.createMediaSource(media_item)
}
override fun onSurfaceChanged(
holder: SurfaceHolder?,
format: Int,
width: Int,
height: Int
) {
}
@Synchronized
override fun onSurfaceDestroyed(holder: SurfaceHolder?) {
}
override fun onDestroy() {
kotlin.runCatching {
super.onDestroy()
exoMediaPlayer.stop()
exoMediaPlayer.release()
}
}
private fun onPause() {
kotlin.runCatching {
exoMediaPlayer.pause()
}
}
private fun onResume() {
kotlin.runCatching {
exoMediaPlayer.play()
}
}
}
}
Bug Report
- You will email the zip file produced by
adb bugreportto dev.exoplayer@gmail.com after filing this issue.
Issue Analytics
- State:
- Created a year ago
- Comments:9 (3 by maintainers)
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@marcbaechinger This is very much an ExoPlayer issue rather than an app issue, ExoPlayer subscribes to the events from the
SurfaceHolderinside ofExoPlayerImpland theSurfaceHoldersubscribes to theSurfaceView, the events that are triggered from theSurfaceView/SurfaceHolderare always on the main thread (as it’s an Android view). If ExoPlayer is running on a different thread / looper, when the analytics collector then tries to find the media period event time, thegenerateReadingMediaPeriodEventTimemethod tries to access the player timeline, which checks the thread and throws anIllegalStateException.It’s a fairly simple work around in
ExoPlayerImplby setting up a handler on theapplicationLooperand runninglisteners.sendEventon that handler inside ofmaybeNotifySurfaceSizeChanged. To fix it outside of ExoPlayer requires creating a customSurfaceHolderclass that listens to the callbacks and forwards them on the correct thread back to ExoPlayer.I confirm @sixones analysis and can confirm this is reproduced on 2.18.1 release. Here is my callstack, but I don’t think it brings additionnal informations. I tryed to disable analyticsCollector with: setAnalyticsCollector(null) or with player.getAnalyticsCollector().setPlayer(null, null); but unfortunately it doesn’t seem possible.