Android 4.4 files list issue
android, android-file
Solution
The Android Developers site states (in the important behaviour changes in KitKat)
If your app reads from external storage...
Your app can not read shared files on the external storage when running on Android 4.4, unless your app has the READ_EXTERNAL_STORAGE permission. That is, files within the directory returned by getExternalStoragePublicDirectory() are no longer accessible without the permission. However, if you need to access only your app-specific directories, provided by getExternalFilesDir(), then you do not need the READ_EXTERNAL_STORAGE permission.
So make sure you give the above permision. Also, if you are using a device with multiple sd cards you may run in this issue.
Problem
I tried to get files in `/sdcard/` folder, but it throws `NullPointerException` Then I tried to get folders in `/` path it returns ``` 40 factory usbdisk sdcard storage config cache acct vendor d etc mnt ueventd.tuna.rc ueventd.rc ueventd.goldfish.rc system sys sepolicy seapp_contexts sbin res ... and others ``` When I do this in 4.3 project it works well! UPDATE code in 4.4 which not work ``` File file = Environment.getExternalStorageDirectory(); File[] files = file.listFiles(); Debugger.info(files.length); // NullPointerExcepton for(File f : files){ Debugger.info(f.getName()); } ```