android tween动画效果

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anim文件夹下

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false" > <alpha
android:duration="1000"
android:fromAlpha="1"
android:repeatCount="infinite"
android:repeatMode="reverse"
android:toAlpha="0" /> </set>

package com.itheima.tween; import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView; public class MainActivity extends Activity { private ImageView imageView; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.imageView);
} public void alpha(View v) {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.alpha); // 加载XML定义动画特效
// anim.setFillAfter(true); // 保持结束时的画面
imageView.startAnimation(anim); // 应用动画特效
} public void scale(View v) {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.scale);
imageView.startAnimation(anim);
} public void rotate(View v) {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.rotate);
imageView.startAnimation(anim);
} public void translate(View v) {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.translate);
imageView.startAnimation(anim);
} public void combo(View v) {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.combo);
imageView.startAnimation(anim);
} }