pooria

@TurkurT656 This error caused by you import multiple `nineoldandroid` library. the `PhoneTutorial` library have a `nineoldandroid` on it self. and you import `nineoldandroid` again.

1. Press Ctrl+Alt+Shift+S 2. In `Modules` select your app 3. Select `Dependencies` 4. Remove the library that contain `nineoldandroid` in it.