Android程序启动加载动画实现

package com.example.bmob_test.ui;//程序启动动画，图片颜色由浅到深，方法一

import com.example.bmob_test.LogActivity;
import com.example.bmob_test.RegActivity;
import com.example.bmob_test.R;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.widget.ImageView;

public class SplashActivity extends Activity
{
    private ImageView welcomeImg = null;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
        welcomeImg = (ImageView) this.findViewById(R.id.welcome_img);
        AlphaAnimation anima = new AlphaAnimation(0.3f, 1.0f);
        anima.setDuration(3000);// 设置动画显示时间
        welcomeImg.startAnimation(anima);
        anima.setAnimationListener(new AnimationImpl());

    }

    private class AnimationImpl implements AnimationListener
    {

        @Override
        public void onAnimationStart(Animation animation)
        {
            welcomeImg.setBackgroundResource(R.drawable.welcome);
        }

        @Override
        public void onAnimationEnd(Animation animation)
        {
            skip(); // 动画结束后跳转到别的页面
        }

        @Override
        public void onAnimationRepeat(Animation animation)
        {

        }

    }

    private void skip()
    {
        startActivity(new Intent(this, LogActivity.class));
        finish();
    }
}

方法二：

package com.example.bmob_test.ui;

import com.example.bmob_test.LogActivity;
import com.example.bmob_test.RegActivity;
import com.example.bmob_test.R;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.widget.ImageView;

public class SplashActivity extends Activity
{
    private ImageView welcomeImg = null;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
        Handler x = new Handler();
        x.postDelayed(new splashhandler(), 3000);
    }

    class splashhandler implements Runnable
    {

        public void run()
        {
            startActivity(new Intent(getApplication(), LogActivity.class));
            SplashActivity.this.finish();
        }

    }
}