Android 给layout设置动画的两种方式

public class MainActivity extends Activity {

LinearLayout layout;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

layout = (LinearLayout) findViewById(R.id.layout);

layout.setLayoutAnimation(getAnimationController());//这是第一种方式

// layout.startAnimation(getAnimation());//这是第2种方式

}

protected LayoutAnimationController getAnimationController() {

LayoutAnimationController controller;

// AnimationSet set = new AnimationSet(true);

Animation anim = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f,

Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,

0.5f);// 从0.5倍放大到1倍

anim.setDuration(1500);

controller = new LayoutAnimationController(anim, 0.1f);

controller.setOrder(LayoutAnimationController.ORDER_NORMAL);

return controller;

}

protected Animation getAnimation() {

Animation anim = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f,

Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,

0.5f);// 从0.5倍放大到1倍

anim.setDuration(1500);

return anim;

}

}