仿造微信，第一次进入去引导界面，否则进启动界面。

package edu.hpu.init;

import edu.hpu.logic.R;

import android.app.Activity;

import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

public class TellActivity extends Activity {

 boolean isFirstIn = false;

  private static final int GO_HOME = 1000;

 private static final int GO_GUIDE = 1001;

 // 延迟3秒

 private static final long delayTime = 3000;

 private static final String spName = "first_pref";

  private Handler mHandler = new Handler() {

      @Override

     public void handleMessage(Message msg) {

         switch (msg.what) {

         case GO_HOME:

             goHome();

             break;

         case GO_GUIDE:

             goGuide();

             break;

         }

         super.handleMessage(msg);

     }

 };

  @Override

 protected void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);

     setContentView(R.layout.splash);

      init();

 }

  private void init() {

     // 读取SharedPreferences中需要的数据

     // 使用SharedPreferences来记录程序的使用次数

     //接口，MODE_PRIVATE指定该SharedPreferences数据只能被本应用程序读、写

     SharedPreferences preferences = getSharedPreferences(

             spName, MODE_PRIVATE);

     SharedPreferences.Editor editor;

     editor = preferences.edit();

      // 取得相应的值，如果没有该值，说明还未写入，用true作为默认值

     isFirstIn = preferences.getBoolean("isFirstIn", true);

      // 判断程序第几次运行，如果是第一次运行则跳转到引导界面，否则跳转到主界面

     if (!isFirstIn) {

         mHandler.sendEmptyMessageDelayed(GO_HOME, delayTime);

     } else {

         // 使用Handler的postDelayed方法，3秒后执行GuideActivity

         mHandler.sendEmptyMessageDelayed(GO_GUIDE, delayTime);

         editor.putBoolean("isFirstIn", false);

         editor.commit();

     }

  }

  private void goHome() {

     Intent intent = new Intent(this, StartActivity.class);

     startActivity(intent);

     this.finish();

 }

  private void goGuide() {

     Intent intent = new Intent(this, GuideActivity.class);

     startActivity(intent);

     this.finish();

 }

}