Android实现卡片翻转动画

最近项目上用到了卡片的翻转效果，大致研究了下，也参考了网上的一些Demo，简单实现如下：

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

可以看出，用到了两个布局

activity_card_back.xml

<?xml version="1.0" encoding="utf-8"?>

activity_card_front.xml

<?xml version="1.0" encoding="utf-8"?>

附上自定义的图片：
shape_card_back_bg.xml

<?xml version="1.0" encoding="utf-8"?>

shape_card_front_bg.xml

<?xml version="1.0" encoding="utf-8"?>

主要的逻辑如下：

package com.jackie.flipanimationdemo; 
 
import android.animation.Animator; 
import android.animation.AnimatorInflater; 
import android.animation.AnimatorListenerAdapter; 
import android.animation.AnimatorSet; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
import android.widget.FrameLayout; 
import android.widget.LinearLayout; 
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener { 
 private FrameLayout mCardMainContainer; 
 private LinearLayout mCardFontContainer, mCardBackContainer; 
 
 private AnimatorSet mRightOutAnimatorSet, mLeftInAnimatorSet; 
 
 private boolean mIsShowBack = false; //是否显示背面 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.activity_main); 
 
 initView(); 
 initEvent(); 
 } 
 
 private void initView() { 
 mCardMainContainer = (FrameLayout) findViewById(R.id.card_main_container); 
 mCardFontContainer = (LinearLayout) findViewById(R.id.card_font_container); 
 mCardBackContainer = (LinearLayout) findViewById(R.id.card_back_container); 
 
 setAnimators(); // 设置动画 
 setCameraDistance(); // 设置镜头距离 
 } 
 
 private void initEvent() { 
 mCardMainContainer.setOnClickListener(this); 
 } 
 
 private void setAnimators() { 
 mRightOutAnimatorSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_right_out); 
 mLeftInAnimatorSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_left_in); 
 
 // 设置点击事件 
 mRightOutAnimatorSet.addListener(new AnimatorListenerAdapter() { 
  @Override 
  public void onAnimationStart(Animator animation) { 
  super.onAnimationStart(animation); 
  mCardMainContainer.setClickable(false); 
  } 
 }); 
 
 mLeftInAnimatorSet.addListener(new AnimatorListenerAdapter() { 
  @Override 
  public void onAnimationEnd(Animator animation) { 
  super.onAnimationEnd(animation); 
  mCardMainContainer.setClickable(true); 
  } 
 }); 
 } 
 
 private void setCameraDistance() { 
 int distance = 16000; 
 float scale = getResources().getDisplayMetrics().density * distance; 
 mCardFontContainer.setCameraDistance(scale); 
 mCardBackContainer.setCameraDistance(scale); 
 } 
 
 private void flipCard() { 
 if (!mIsShowBack) { // 正面朝上 
  mRightOutAnimatorSet.setTarget(mCardFontContainer); 
  mLeftInAnimatorSet.setTarget(mCardBackContainer); 
  mRightOutAnimatorSet.start(); 
  mLeftInAnimatorSet.start(); 
  mIsShowBack = true; 
 } else { // 背面朝上 
  mRightOutAnimatorSet.setTarget(mCardBackContainer); 
  mLeftInAnimatorSet.setTarget(mCardFontContainer); 
  mRightOutAnimatorSet.start(); 
  mLeftInAnimatorSet.start(); 
  mIsShowBack = false; 
 } 
 } 
 
 @Override 
 public void onClick(View v) { 
 switch (v.getId()) { 
  case R.id.card_main_container: 
  flipCard(); 
  break; 
 } 
 } 
}

用到一些动画的资源：

anim_left_in.xml