File.mkdirs warning from Android Studio

Question

in my app I create a new dir in this way;

File mydir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "/my_directory");
if (!mydir.exists()) {
    mydir.mkdirs();
}

and it works well, but Android Studio (0.8.9) just continues to report me this warning:

Result of "File.mkdirs()" is ignored

Anyone can explain me why? Thank you.

Answer 1

because you dont do anything with what it returns, you just ignore it

ex.

if(mydir.mkdirs()){
    //do something
}else{
    //do something else
}

you dont need to do anything, its just a warning

Answer 2

You are ignoring result of File.mkdir()

Read this Answer for more clerification