Question

I’d like to have an imagebutton center screen that open starting ‘grows’ to fill the entire screen smoothly using some sort of animation. upon reaching full size, reverse the animation and go back to its original size?

any ideas? is this even possible?

Answer 1

Here is a sample to get you started create an xml file for your animation using this layout,
res/anim/animate.xml

       <?xml version="1.0" encoding="utf-8"?>
        <set xmlns:android="http://schemas.android.com/apk/res/android" 
        android:shareInterpolator="false">
   <scale
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromXScale="1.0"
    android:toXScale="2.0"
    android:fromYScale="1.0"
    android:toYScale="2.0"
    android:repeatMode="reverse"
    android:duration="700" />
    </set>

and in your method to start the animation use this

 Animation scaleAnim = AnimationUtils.loadAnimation(this, R.anim.animate);
view.startAnimation( scaleAnim ); 

Learn more about animations here Animations