Trying to create a file in Android: open failed: EROFS (Read-only file system)

Question

This line:

final FileOutputStream outputStream = new FileOutputStream(name);

results in a FileNotFoundException with the messa

Answer 1

If anyone getting this in unit/instrumentation testing, make sure you call getFilesDir() on the app context, not the test context. i.e. use:

Context appContext = getInstrumentation().getTargetContext().getApplicationContext();

not

Context appContext = InstrumentationRegistry.getContext;