随着Android 10(Q)的最新更改,尝试在应用程序上播放用户设备上的歌曲(定位为sdk版本 29 ,并运行Android 10 ),使用ExoPlayer在控制台上打印以下日志,但失败(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Internet上找到的解决该问题的一种方法是在清单的<application>
标签上添加以下属性:
android:requestLegacyExternalStorage="true"
该解决方案的问题在于它似乎是临时的,可能很快就会弃用。
在这些规范下处理这些更改的正确方法是什么?