I have an activity like below screen.
View 1 have width and height as match_parent respectively. View 2 have width match_parent and fixed (200 dp) height.
On a button click I change the visibility (from visible to gone) of View 2. As soon as I hide View 2, View 1 comes in full screen instantly or with a jerk. I want the View 1 to gradually expand to full screen with animation instead of instantly.
How can I animate this layout size change?
You can set android:animateLayoutChanges="true" on the parent layout. This works from API 11 and onward.
You need to use scale animation for view1 and fade out for view2 and then use Animatorset to run both at the same time. For example for a simple scale animation
ScaleAnimation anim = new ScaleAnimation(fXscale, toXscale, fYscale, tYscale, Animation.RELATIVE_TO_SELF, (float)0.5, Animation.RELATIVE_TO_SELF, (float)0.5);//fix to fit your needs.
