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ContentResolver cr =this.getContentResolver();
Cursor tempCur = cr.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
/*new String[]{
MediaStore.Audio.Media._ID, //int
MediaStore.Audio.Media.DATA, //String
MediaStore.Audio.Media.DISPLAY_NAME, //String
MediaStore.Audio.Media.MIME_TYPE //String
}*/
null,//无论取null还是上边的数组都是一样的
null, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER); //order取null也是一样的
if(tempCur!=null){
if(D)Log.d(TAG,"Cursor.getCount in Audio"+tempCur.getCount());
}else{
if(D)Log.d(TAG,"Cursor.getCount in Audio is NULL");
}
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
if(cr!=null){
if(D)Log.d(TAG,"ContentResolver is "+cr.toString());
}else{
if(D)Log.d(TAG,"ContentResolver is NULL");
}
if(tempCur!=null){
if(D)Log.d(TAG,"Cursor.getCount in Audio"+tempCur.getCount());
}else{
if(D)Log.d(TAG,"Cursor in Audio is NULL");
}