Android淡入淡出欢迎界面

package com.example.loadingactivity;

import javax.security.auth.PrivateCredentialPermission;

import android.animation.ObjectAnimator;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.widget.ImageView;

public class LoadingActivity extends Activity {

private ImageView iv;

@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.loading);
iv=(ImageView) findViewById(R.id.iv);
AlphaAnimation alphaAnimation=new AlphaAnimation(0.0f, 1.0f);
alphaAnimation.setDuration(8000);
iv.startAnimation(alphaAnimation);
alphaAnimation.setAnimationListener(new AnimationListener() {

@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub

}

@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub

}

@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
startActivity(new Intent(LoadingActivity.this, MainActivity.class));
LoadingActivity.this.finish();
}
});

//      Handler handler=new Handler();
//      handler.postDelayed(new Runnable() {
//
//          @Override
//          public void run() {
//              // TODO Auto-generated method stub
//              //启动mainActivity
//              startActivity(new Intent(LoadingActivity.this, MainActivity.class));
//              LoadingActivity.this.finish();
//          }
//      }, 2000);
}
}