android:3D垂直翻转动画-FlipAnimation

• 需求
  对ImageView进行类似于翻纸牌的动画
• 解决
  各种Animator的组合

第一步动画：
动画代码文件1，card_flip_left_out.xml

  <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android" >
    <!-- 先缩小 -->
    <objectAnimator
        android:duration="200"
        android:propertyName="scaleX"
        android:valueFrom="1.0"
        android:valueTo="0.8" />
    <objectAnimator
        android:duration="200"
        android:propertyName="scaleY"
        android:valueFrom="1.0"
        android:valueTo="0.8" />
    <!-- 再旋转 -->
    <objectAnimator
        android:duration="@integer/card_flip_time_full"
        android:interpolator="@android:interpolator/accelerate_decelerate"
        android:propertyName="rotationY"
        android:startOffset="200"
        android:valueFrom="0"
        android:valueTo="90" />
    <!-- 同时透明度变化 -->
    <objectAnimator
        android:duration="@integer/card_flip_time_full"
        android:propertyName="alpha"
        android:startOffset="200"
        android:valueFrom="1.0"
        android:valueTo="0.0" />
  </set>

第二步动画
动画文件2：card_flip_left_out

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <!-- 立即设置为透明 -->
    <objectAnimator
        android:duration="0"
        android:propertyName="alpha"
        android:valueFrom="1.0"
        android:valueTo="0.0" />
    <!-- 旋转 -->
    <objectAnimator
        android:duration="@integer/card_flip_time_full"
        android:interpolator="@android:interpolator/accelerate_decelerate"
        android:propertyName="rotationY"
        android:valueFrom="-90"
        android:valueTo="0" />
    <!-- 旋转一半的时间，逐渐显示 -->
    <objectAnimator
        android:duration="1"
        android:propertyName="alpha"
        android:startOffset="@integer/card_flip_time_half"
        android:valueFrom="0.0"
        android:valueTo="1.0" />
    <!-- 最后放大 -->
    <objectAnimator
        android:duration="200"
        android:propertyName="scaleX"
        android:startOffset="@integer/card_flip_time_full"
        android:valueFrom="0.8"
        android:valueTo="1.0" />
    <objectAnimator
        android:duration="200"
        android:propertyName="scaleY"
        android:startOffset="@integer/card_flip_time_full"
        android:valueFrom="0.8"
        android:valueTo="1.0" />
</set>

下面就是写java代码啦，在第一个动画结束的时候，换图。

package com.example.android.animationsdemo;
import android.animation.Animator;
import android.animation.AnimatorInflater;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;

/**
 * @date 2015年3月18日 下午2:28:33
 * @author Zheng Haibo
 * @Description: 图片的翻转动画
 */
public class ImageFlipActivity extends Activity {

    private ImageView imageView;
    private int clickCount = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_image_flip);
        imageView = (ImageView) findViewById(R.id.iv_show);

        imageView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                playFlipAnimation2();
            }

        });
    }

    private void playFlipAnimation2() {
        clickCount++;
        AnimatorSet animatorSetOut = (AnimatorSet) AnimatorInflater
                .loadAnimator(this, R.animator.card_flip_left_out);

        final AnimatorSet animatorSetIn = (AnimatorSet) AnimatorInflater
                .loadAnimator(this, R.animator.card_flip_left_in);

        animatorSetOut.setTarget(imageView);
        animatorSetIn.setTarget(imageView);

        animatorSetOut.addListener(new AnimatorListenerAdapter() {

            @Override
            public void onAnimationEnd(Animator animation) {// 翻转90度之后，换图
                if (clickCount % 2 == 0) {
                    imageView.setImageResource(R.drawable.image1);
                } else {
                    imageView.setImageResource(R.drawable.image2);
                }
                animatorSetIn.start();
            }
        });

        animatorSetIn.addListener(new AnimatorListenerAdapter() {

            @Override
            public void onAnimationEnd(Animator animation) {
                // TODO
            }
        });
        animatorSetOut.start();
    }

}

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