I have Found the Wallpaper Manger component Really Useful in Making A Wallpaper app and Its been missing a Feature of Allowing Users to Crop the Picture!. Please Add the Crop Feature as it would make the component Really Advanced and serve a Complete Purpose.
You should be able h to use ActivityStarter for cropping images:
Can you please Explain it a Bit Briefly because the code given there is for Android Studio and how do. It use in AppyBuilder