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- 需求
對ImageView進行相似於翻紙牌的動畫
- 解決
各種Animator的組合
第一步動畫:
動畫代碼檔案1,card_flip_left_out.xml
<?xml version="1.0" encoding="utf-8"?
> <set xmlns:android="http://schemas.android.com/apk/res/android" > <!-- 先縮小 --> <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" /> <!-- 再旋轉 --> <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" /> <!-- 同一時候透明度變化 --> <objectAnimator android:duration="@integer/card_flip_time_full" android:propertyName="alpha" android:startOffset="200" android:valueFrom="1.0" android:valueTo="0.0" /> </set>
第二步動畫
動畫檔案2:card_flip_left_out
<?xml version="1.0" encoding="utf-8"?
><set xmlns:android="http://schemas.android.com/apk/res/android" > <!-- 馬上設定為透明 --> <objectAnimator android:duration="0" android:propertyName="alpha" android:valueFrom="1.0" android:valueTo="0.0" /> <!-- 旋轉 --> <objectAnimator android:duration="@integer/card_flip_time_full" android:interpolator="@android:interpolator/accelerate_decelerate" android:propertyName="rotationY" android:valueFrom="-90" android:valueTo="0" /> <!-- 旋轉一半的時間。逐漸顯示 --> <objectAnimator android:duration="1" android:propertyName="alpha" android:startOffset="@integer/card_flip_time_half" android:valueFrom="0.0" android:valueTo="1.0" /> <!-- 最後放大 --> <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>
以下就是寫java代碼啦,在第一個動畫結束的時候,換圖。
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: 圖片的翻轉動畫 */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) {// 翻轉90度之後,換圖 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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android:3D垂直翻轉動畫-FlipAnimation