animationDemo

最新推荐文章于 2024-06-06 09:40:27 发布

原创最新推荐文章于 2024-06-06 09:40:27 发布 · 475 阅读

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本文介绍了一种使用Java实现的动画效果，包括透明度、旋转、移动和缩放等基本动画类型，并提供了一个组合这些动画的示例。此外还展示了如何通过监听器来控制动画的开始和结束。

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public class AnimationDemo {
private static AnimationDemo instance;
public static AnimationDemo getInstance(){
    if (instance==null){
        synchronized (AnimationDemo.class){
            if (instance==null)
                instance=new AnimationDemo();
        }
    }
    return instance;
}
//共有四种动画:透明度 旋转 移动 缩放
public void doAlpha(ImageView iv){
    AlphaAnimation alphaAnimation =  new AlphaAnimation(0,1);
    alphaAnimation.setDuration(5000);
    iv.startAnimation(alphaAnimation);
}
public void doRotate(ImageView iv){
//        RotateAnimation alphaAnimation =  new RotateAnimation(0,360,iv.getWidth()/2,iv.getHeight()/2);
    RotateAnimation alphaAnimation =  new RotateAnimation(0,360);
    alphaAnimation.setDuration(5000);
    iv.startAnimation(alphaAnimation);
}
public void doTranslate(ImageView iv){
    TranslateAnimation alphaAnimation =  new TranslateAnimation(0,200,0,300);
    alphaAnimation.setDuration(5000);
    iv.startAnimation(alphaAnimation);
}
public void doScale(ImageView iv){
    ScaleAnimation alphaAnimation =  new ScaleAnimation(0,1,0,1,Animation.RELATIVE_TO_SELF,Animation.RELATIVE_TO_SELF);
    alphaAnimation.setDuration(5000);
    iv.startAnimation(alphaAnimation);
}
//补间动画集合
public void doGroup(ImageView iv){
    AnimationSet animationSet = new AnimationSet(true);//为真则使用共同的动画时间,为假则使用各自的动画时间
    TranslateAnimation alphaAnimation =  new TranslateAnimation(0,200,0,300);
    alphaAnimation.setDuration(5000);
    animationSet.addAnimation(alphaAnimation);

    ScaleAnimation scaleAnimation =  new ScaleAnimation(0,1,0,1,Animation.RELATIVE_TO_SELF,Animation.RELATIVE_TO_SELF);
    scaleAnimation.setDuration(5000);
    animationSet.addAnimation(scaleAnimation);

    //设置动画的监听器
    animationSet.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
            Log.v("meee","开始");
        }


        @Override
        public void onAnimationEnd(Animation animation) {
            Log.v("meee","结束");
        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }
    });
    iv.startAnimation(animationSet);
}
}