android 铃声设置失败,无法通过Android代码设置铃声

我正在开发一个应用程序，它将随机设置用户已选择的铃声列表中的铃声。无法通过Android代码设置铃声

虽然我的代码适用于Android N及以上版本，但我遇到了Android M及以下版本的问题。我为解决方案搜索了很多。但找不到任何。

这是我设置铃声的代码片段。

RingtoneManager.setActualDefaultRingtoneUri(getApplicationContext(),

RingtoneManager.TYPE_RINGTONE,

uri);

这是我的清单文件。

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/AppTheme">

这里是在该应用运行

11-11 09:09:32.914 3292-3292/? W/Binder_1: type=1400 audit(0.0:32): avc: denied { read } for path="/storage/emulated/0/iphone6.mp3" dev="fuse" ino=23 scontext=u:r:system_server:s0 tcontext=u:object_r:fuse:s0 tclass=file permissive=0

11-11 09:09:32.935 1611-3697/system_process E/JavaBinder: !!! FAILED BINDER TRANSACTION !!! (parcel size = 336)

11-11 09:09:32.935 1611-3697/system_process I/ActivityThread: Removing dead content provider:[email protected]

11-11 09:09:32.937 1611-3697/system_process W/ActivityManager: unstableProviderDied: caller 1000 says ContentProviderConnection{ca0b2f/com.android.externalstorage/.ExternalStorageProvider->1611:system/1000 s0/0 u1/1 +23ms} died, but we don't agree

11-11 09:09:32.934 3292-3292/? W/Binder_1: type=1400 audit(0.0:33): avc: denied { read } for path="/storage/emulated/0/iphone6.mp3" dev="fuse" ino=23 scontext=u:r:system_server:s0 tcontext=u:object_r:fuse:s0 tclass=file permissive=0

11-11 09:09:32.954 1611-3697/system_process E/JavaBinder: !!! FAILED BINDER TRANSACTION !!! (parcel size = 336)

11-11 09:09:32.954 1611-3697/system_process W/MediaPlayer: Couldn't open file on client side; trying server side: java.io.FileNotFoundException: Failed opening content provider: content://com.android.externalstorage.documents/document/primary%3Aiphone6.mp3

11-11 09:09:32.963 1611-3697/system_process W/ActivityManager: Permission Denial: opening provider com.android.externalstorage.ExternalStorageProvider from (null) (pid=1328, uid=1013) requires android.permission.MANAGE_DOCUMENTS or android.permission.MANAGE_DOCUMENTS

11-11 09:09:32.964 1328-1680/? E/MediaPlayerService: Couldn't open fd for content://com.android.externalstorage.documents/document/primary%3Aiphone6.mp3

11-11 09:09:32.965 1611-3697/system_process E/MediaPlayer: Unable to create media player

11-11 09:09:32.965 1611-3697/system_process D/Ringtone: Problem opening; delegating to remote player

11-11 09:09:32.954 3293-3293/? W/Binder_2: type=1400 audit(0.0:34): avc: denied { read } for path="/storage/emulated/0/iphone6.mp3" dev="fuse" ino=23 scontext=u:r:system_server:s0 tcontext=u:object_r:fuse:s0 tclass=file permissive=0

请帮我解决这个问题所产生的错误日志。在此先感谢

我已经搜索如何获得android.permission.MANAGE_DOCUMENTS权限。我收集的是它的安全级别为signature，只有android自带的应用程序才具有该权限。