颜色随机变化，点击视图，左淡出，右淡入，下淡出，上淡入效果。

Android动画案例,淡入淡出效果源码下载

具体下载目录在 /2013年资料/3月/24日/Android动画案例，淡入淡出效果

主要源代码解析：

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.Argbeva luator;
import android.animation.Inteva luator;
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){//颜色随机变化代码 使用ValueAnimator类给每个视图加上北京颜色随时间变化的动画
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.seteva luator(new Argbeva luator());//设置数值计算器，保证动画变化过程中的数值正确
animator.setRepeatCount(ValueAnimator.INFINITE);
animator.setRepeatMode(ValueAnimator.REVERSE);
animator.start();

textView.setOnClickListener(this);
}
}