1、Android動畫測試程序，界面如圖：
顏色隨機變化，點擊視圖，左淡出，右淡入，下淡出，上淡入效果。
Android動畫案例,淡入淡出效果源碼下載
免費下載地址在 http://linux.linuxidc.com/
用戶名與密碼都是www.linuxidc.com
具體下載目錄在 /2013年資料/3月/24日/Android動畫案例，淡入淡出效果
主要源代碼解析：
package com.example.objectanimatortest;
import java.util.Random;
import android.os.Build;
import android.os.Bundle;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ArgbEvaluator;
import android.animation.IntEvaluator;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.annotation.TargetApi;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.view.TextureView;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.TextView;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class MainActivity extends Activity implements View.OnClickListener{
private TextView[] tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.objectanimatortest);
tv = new TextView[]{
(TextView) findViewById(R.id.tv01),
(TextView) findViewById(R.id.tv02),
(TextView) findViewById(R.id.tv03),
(TextView) findViewById(R.id.tv04),
(TextView) findViewById(R.id.tv11),
(TextView) findViewById(R.id.tv12),
(TextView) findViewById(R.id.tv13),
(TextView) findViewById(R.id.tv14)
};
initTextViews();
}
private void initTextViews(){
for(TextView textView :tv){//顏色隨機變化代碼 使用ValueAnimator類給每個視圖加上北京顏色隨時間變化的動畫
int color1 = Color.rgb((new Random()).nextInt(255), (new Random()).nextInt(255), (new Random()).nextInt(255)) ;
int color2 = Color.rgb((new Random()).nextInt(255), (new Random()).nextInt(255), (new Random()).nextInt(255)) ;
ValueAnimator animator = ObjectAnimator.ofInt(textView, "backgroundColor", color1,color2);
animator.setDuration(3000);
animator.setEvaluator(new ArgbEvaluator());//設置數值計算器，保證動畫變化過程中的數值正確
animator.setRepeatCount(ValueAnimator.INFINITE);
animator.setRepeatMode(ValueAnimator.REVERSE);
animator.start();
textView.setOnClickListener(this);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onClick(final View view) {
final ValueAnimator animator1 = ObjectAnimator.ofFloat(view, "alpha",1,0);//淡出效果
animator1.setDuration(1000);
animator1.setInterpolator(new AccelerateInterpolator());
ValueAnimator animator2 = ObjectAnimator.ofFloat(view,"x",view.getX(),(view.getX()-view.getWidth()));//向左移動效果
animator2.setDuration(1000);
animator2.setInterpolator(new DecelerateInterpolator());
AnimatorSet animatorSet = new AnimatorSet();//合起來就是左淡出效果
animatorSet.play(animator2).before(animator1);
// animatorSet.start();
final ValueAnimator animator3 = ObjectAnimator.ofFloat(view, "alpha",0,1);//淡入效果
animator3.setDuration(1000);
animator3.setInterpolator(new AccelerateInterpolator());
ValueAnimator animator4 = ObjectAnimator.ofFloat(view,"x",view.getX()+2*view.getWidth(),view.getX());//從右邊向左移動
animator4.setDuration(1000);
animator4.setInterpolator(new DecelerateInterpolator());
animator4.addListener(new AnimatorListenerAdapter() {//當動畫播放完，我們做什麼
@Override
public void onAnimationEnd(Animator animation) {//向下移動淡出，然後向上移動淡入
super.onAnimationEnd(animation);
final ValueAnimator animatorY = ObjectAnimator.ofFloat(view, "y", view.getY(),view.getY()+view.getHeight());
animatorY.setDuration(1000);
final ValueAnimator alphaY = animator1.clone();
ValueAnimator rotate = ObjectAnimator.ofFloat(view,"rotationY",0,90);
rotate.setDuration(2000);
// rotate.start();
animatorY.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
animatorY.reverse();
animator3.clone().start();
}
});
AnimatorSet set = new AnimatorSet();
set.play(animatorY).with(alphaY);
set.start();
}
});
// animatorSet.play(animator3).after(animator1);//合起來就是左淡出，右淡入效果
// animatorSet.play(animator3).with(animator4);
// animatorSet.start();
AnimatorSet animatorSet1 = new AnimatorSet();
animatorSet1.play(animator3).with(animator4);
AnimatorSet animatorSet2 = new AnimatorSet();
animatorSet2.play(animator2).with(animator1);
AnimatorSet set = new AnimatorSet();
set.playSequentially(animatorSet2,animatorSet1);//使用playSequentially方法測試效果
set.start();
}
}
在源代碼中還有測試類，修改一下mainifest.xml文件，讓另外的那個類運行便可以看到效果。
更多Android相關信息見Android 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=11
