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();

}

}