Android write to external storage(Permission denied)

Question

I am facing a shitty problem. I can't seem to get my app write to external storage(or anywhere). The app is running on a Android 4.4.4 KitKat device with the known SD card issue. But other apps of mine(compiling against lower Android versions) can still write to external storage on this device.. I have set the correct permission. Can someone please answer how to fix this crap.

Stacktrace:

java.io.FileNotFoundException: /storage/emulated/0/tb_Totaal.txt: open failed: EACCES (Permission denied)

Code:

File directoryFile = new File(Environment.getExternalStorageDirectory(), "");
directoryFile.mkdirs();

File f = new File(Environment.getExternalStorageDirectory(), "/text.txt");
FileWriter writer = new FileWriter(f.getPath());

Permissions:

<uses-permission android:name="android.permission.write_external_storage"/>
<uses-permission android:name="android.permission.read_external_storage"/>

Answer 1

Permissions names are case sensitive. Try using:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

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According to the Android Documentation , you do not need to include READ_EXTERNAL_STORAGE permission as it is automatically obtained when you require the WRITE_EXTERNAL_STORAGE permission.