package login;

import com.example.login.R;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.animation.AlphaAnimation;

import android.view.animation.Animation;

import android.view.animation.Animation.AnimationListener;

import android.widget.ImageView;  

public class splash 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, LoginActivity.class));

        finish();

    }

}  

Intent NewAct = new Intent(SourceAct.this,TargetAct.class);

startActivity(NewAct);

SourceAct.this.finish();