M300+H20 MSDK 4.15.1下getSDCardFileListSnapshot为null,4.15正常。
Completedstate = mediaManager.getSDCardFileListState();
(state == MediaManager.FileListState.UP_TO_DATE) ? mediaManager.getSDCardFileListSnapshot():null;
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state = mediaManager.getSDCardFileListState();
(state == MediaManager.FileListState.UP_TO_DATE) ? mediaManager.getSDCardFileListSnapshot():null;
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