根据 Android 10 (Q) 的最新变化,尝试在应用(面向 sdk 版本 29 并运行 Android 10)上播放用户设备上的歌曲)使用ExoPlayer,在控制台上打印以下日志并失败(歌曲未播放):
E/libprocessgroup: Error encountered killing process cgroup uid 99420 pid 20294: Permission denied
com.google.android.exoplayer2.upstream.FileDataSource$FileDataSourceException: java.io.FileNotFoundException: /storage/emulated/0/Music/Nirvana/[1989] - Bleach/01 - Blew.mp3: open failed: EACCES (Permission denied)
at com.google.android.exoplayer2.upstream.FileDataSource.open(FileDataSource.java:73)
at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:257)
at com.google.android.exoplayer2.upstream.StatsDataSource.open(StatsDataSource.java:83)
at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:939)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:394)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
Caused by: java.io.FileNotFoundException: /storage/emulated/0/Music/Nirvana/[1989] - Bleach/01 - Blew.mp3: open failed: EACCES (Permission denied)
at libcore.io.IoBridge.open(IoBridge.java:496)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:289)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:152)
at com.google.android.exoplayer2.upstream.FileDataSource.open(FileDataSource.java:65)
at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:257)
at com.google.android.exoplayer2.upstream.StatsDataSource.open(StatsDataSource.java:83)
at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:939)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:394)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)
at libcore.io.Linux.open(Native Method)
at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:252)
at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7255)
at libcore.io.IoBridge.open(IoBridge.java:482)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:289)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:152)
at com.google.android.exoplayer2.upstream.FileDataSource.open(FileDataSource.java:65)
at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:257)
at com.google.android.exoplayer2.upstream.StatsDataSource.open(StatsDataSource.java:83)
at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:939)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:394)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
我在互联网上找到的解决该问题的一种方法是在 list 的 <application>
上添加以下属性标签:
android:requestLegacyExternalStorage="true"
该解决方案的问题在于它似乎是暂时的,可能很快就会被弃用。
在这些规范下处理这些变化的正确方法是什么?
最佳答案
经过进一步的试验,我能够使用媒体的 Uri
使用 ExoPlayer 播放歌曲。
// id col = `MediaStore.Audio.Media._ID`
val id = cursor.getLong(idColIndex)
val uri = ContentUris.withAppendedId(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
id
)
...
val songSource = ExtractorMediaSource.Factory(dataSourceFactory)
.createMediaSource(uri)
它成功播放了歌曲,没有抛出任何异常。
关于android - 使用 Android 10 (Q) 且 targetSdkVersion = 29 在 ExoPlayer 上播放歌曲的正确方法是什么?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59036747/