animation- 动画效果实现（代码中）

1，首先我们看一下如下的代码

import android.view.animation.LayoutAnimationController;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.Transformation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AlphaAnimation;
import android.view.animation.TranslateAnimation;
 
    private Animation myHistoryAnimation;
    private LayoutAnimationController myLayoutControl;
    private AlphaAnimation myHistoryAlphaAnimation;
    private AlphaAnimation myHistoryAlphaAnimationConTime;
    private TranslateAnimation myHistoryTranslateAnimation;
    private AnimationSet myHistoryAnimationSet;
 
myHistoryAlphaAnimation = new AlphaAnimation(1, 0);
        myHistoryAlphaAnimationConTime = new AlphaAnimation(1, 1);
        myHistoryAlphaAnimation.setDuration(1000);
        myHistoryAlphaAnimationConTime.setDuration(500);
        myHistoryAnimationSet = new AnimationSet(true);
/* Vanzo:zhangshuli on: Fri, 20 Mar 2015 14:57:37 +0000
 * modify for v5 calculator
        myHistoryTranslateAnimation = (TranslateAnimation) AnimationUtils.loadAnimation(
                this, R.anim.history_clear_anim);
 */
        myHistoryTranslateAnimation = new TranslateAnimation(
 
                Animation.RELATIVE_TO_SELF,0f,
 
                Animation.RELATIVE_TO_SELF,0f,
 
                Animation.RELATIVE_TO_SELF,0f,
 
                Animation.RELATIVE_TO_SELF,10f);
        myHistoryTranslateAnimation.setDuration(1000);
// End of Vanzo: zhangshuli
        myHistoryAnimationSet.setFillAfter(true);
myHistoryAnimationSet.setAnimationListener(new AnimationListener() {
 
            @Override
            public void onAnimationStart(Animation arg0) {
            // TODO Auto-generated method stub
                history_clear_choose.setVisibility(View.GONE);
 
            }
 
            @Override
            public void onAnimationRepeat(Animation arg0) {
            // TODO Auto-generated method stub
 
            }
 
            @Override
            public void onAnimationEnd(Animation arg0) {
            // TODO Auto-generated method stub
            android.util.Log.e("zhangshuli", "set");
/* Vanzo:zhangshuli on: Fri, 20 Mar 2015 16:17:24 +0000
 * modify for v5 calculator
                if (mDrawerLayout.isDrawerVisible(GravityCompat.END)) {
                    mDrawerLayout.closeDrawer(GravityCompat.END);
                }
 */
// End of Vanzo: zhangshuli
 
            }
        });
        myHistoryAlphaAnimation.setAnimationListener(new AnimationListener() {
 
                @Override
            public void onAnimationStart(Animation arg0) {
            // TODO Auto-generated method stub
 
            }
 
            @Override
            public void onAnimationRepeat(Animation arg0) {
            // TODO Auto-generated method stub
 
            }
 
            @Override
            public void onAnimationEnd(Animation arg0) {
 mHistory.clear();
                mLogic.onClear();
                android.util.Log.e("zhangshuli", "tran1");
 
            }
        });
        myHistoryAnimationSet.addAnimation(myHistoryTranslateAnimation);
        myHistoryAnimationSet.addAnimation(myHistoryAlphaAnimation);
        myHistoryAnimationSet.addAnimation(myHistoryAlphaAnimationConTime);
        myLayoutControl = new LayoutAnimationController(myHistoryAnimationSet);
        myLayoutControl.setDelay(0.1f);
       // myLayoutControl.setOrder(LayoutAnimationController.ORDER_NORMAL);
        myLayoutControl.setOrder(LayoutAnimationController.ORDER_REVERSE);
 
 mHistoryDisplayList.setLayoutAnimation(myLayoutControl);

2.从以上的代码中我们可以发现。代码中定义动画的话，有个好处，就是比较灵活，可以根据我们的需要动态的更改动画的时间等属性。当然，你也会看到它代码的重用性非常的糟糕。

1）创建动画：其实就是new一个相应的动画就行了

2）然后就是设置动画的属性值，时间等

   import android.view.animation.AlphaAnimation;   
 
　　AlphaAnimation alphaAnimation=new AlphaAnimation( 1f,0.5f);
    //动画时间
    alphaAnimation.setDuration(1000);
    //动画结束以后是否应用，false的话，会返回初始位置
    alphaAnimation.setFillAfter(true);
    //设置动画动作样式
    alphaAnimation.setInterpolator(this,android.R.anim.accelerate_decelerate_interpolator);

其他的也类似

import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
    TranslateAnimation translateAnimation = new TranslateAnimation(
            //第一个参数：相对于父类还是自身比例 第二个其实x坐标
            Animation.RELATIVE_TO_SELF, 0f,
            //起始y坐标
            Animation.RELATIVE_TO_SELF,0f,
            //结束x坐标
            Animation.RELATIVE_TO_SELF,0f,
            //结束y坐标
            Animation.RELATIVE_TO_SELF,10f);

3）如果你仅仅就需要一个简单的动画，那么你只需要在一个控件上start这个动画就行了，如下

view.startAnimation(myAnimation_Alpha);

4）如果你希望把几个动画进行复合，这时候你需要借助

myHistoryAnimationSet = new AnimationSet(true);

 myHistoryAnimationSet.addAnimation(myHistoryTranslateAnimation);

AnimationSet 其实就相当于一个动画容器，可以把不同的动画效果合为一个复合动画进行