如何在Android中使用动画调整ViewPager的大小

Question

I'm beginner in Android and I have a little problem with animations yet. I have a layout in Android with a viewpager (the pink part of the layout):
Android ViewPager layout
I would like to resize the height of the viewpager with an animation when user clicking on the Skip button like this one:
enter image description here
I've tried to set the layoutparams of the view, but I got an error:

java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.FrameLayout$LayoutParams

Answer 1

You get the error probably because you cast (LinearLayoutParams)yourViewPager.getLayoutParams(); if you want to change the height use

yourViewPager.getLayoutParams().height=value;

if you want to animate it you can use value animators you can find a simple sample here also on github