Android Animation Questions

1.

 1 AnimationSet exitTransition = new AnimationSet(true);

 2         exitTransition.setDuration(1000);

 3         int xoffset=getResources().getDimensionPixelSize(R.dimen.list_width);

 4         int yoffset=getResources().getDimensionPixelSize(R.dimen.topbar_height);

 5         float xscale=(mShelvesView.getWidth()-xoffset)/(float)mShelvesView.getWidth();

 6         TranslateAnimation trans = new TranslateAnimation(

 7                 Animation.ABSOLUTE, 0, Animation.ABSOLUTE, xoffset,

 8                 Animation.ABSOLUTE, 0, Animation.ABSOLUTE, yoffset);

 9         ScaleAnimation scales= new ScaleAnimation(1f,xscale,1f,1f);

10         exitTransition.addAnimation(scales);

11         exitTransition.addAnimation(trans);

12         exitTransition.setFillAfter(true);

13         mShelvesView.startAnimation(exitTransition);

I create an animation ues this code in Android 4.0,and it runs properly.However ,when I run it on Android 3.1 device,the animation process is gone.It directly jump to the last position.

Answers:

add this two lines :

trans.setDuration(1000);

scales.setDuration(1000);

then it will be ok.