mkdirs() method not works

Question

I need to make a directory if not exist. I've wrote codes below

    File backupDir = new File("//test");

    // if (!backupDir.exists())
    backupDir.mkdirs();

I've previously used it without any problem, But now not works and I have no errors! What is the problem? Have you any idea to solve this?

Thanks in advance

Answer 1

Have you any idea to solve this?

Use a valid path that you can write to. Not only is //test a strange way to encode a path, you cannot write to it on any Android device from Java code this way. Use appropriate methods, like getFilesDir() or getExternalFilesDir(), to find places that you can write to.