Add READ_EXTERNAL_STORAGE permission
Logcat shows the following error,

11-29 17:38:06.959  2984  5354 E DatabaseUtils: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/fs_id from pid=9014, uid=10148 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
1 file changed