android基础：动画案例（图片翻转）
16lz
2021-12-04
layout->main.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/root"> <ImageView android:id="@+id/imageA" android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/image_a" /> <ImageView android:id="@+id/imageB" android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/image_b" /></FrameLayout>
MainActivity.java
package com.jikexueyuan.card2d;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.Animation;import android.view.animation.Animation.AnimationListener;import android.view.animation.ScaleAnimation;import android.widget.ImageView;public class MainActivity extends Activity {private ImageView imageA;private ImageView imageB;// 定义动画ScaleAnimation ani1 = new ScaleAnimation(1, 0, 1, 1, Animation.RELATIVE_TO_PARENT, 0.5f,Animation.RELATIVE_TO_PARENT, 0.5f);ScaleAnimation ani2 = new ScaleAnimation(0, 1, 1, 1, Animation.RELATIVE_TO_PARENT, 0.5f,Animation.RELATIVE_TO_PARENT, 0.5f);@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imageA = (ImageView) findViewById(R.id.imageA);imageB = (ImageView) findViewById(R.id.imageB);// 默认显示AimageA.setVisibility(View.VISIBLE);imageB.setVisibility(View.INVISIBLE);// 设置动画时间ani1.setDuration(700);ani2.setDuration(700);// 点击界面，显示动画1this.findViewById(R.id.root).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if (imageA.getVisibility() == View.VISIBLE) {imageA.startAnimation(ani1);} else {imageB.startAnimation(ani1);}}});// 添加，动画1结束后，启动动画2ani1.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {if (imageA.getVisibility() == View.VISIBLE) {imageB.setVisibility(View.VISIBLE);imageA.setVisibility(View.INVISIBLE);imageA.setAnimation(null);imageB.startAnimation(ani2);} else {imageA.setVisibility(View.VISIBLE);imageB.setVisibility(View.INVISIBLE);imageB.setAnimation(null);imageA.startAnimation(ani2);}}});}}
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