handler 计时

引用：http://www.cnblogs.com/vir56k/archive/2011/06/28/2092176.html

package com.androidGreenPack.tools;

import android.content.Context;

import android.os.Handler;

import android.widget.LinearLayout;

import android.widget.TextView;

/**

 * 显示logo界面，倒计时n秒后，进入下一个页面

 * **/

public class LogoShow extends LinearLayout{

private Context mContext;

private int _number;

private TextView textView;

private Handler handler;

public LogoShow(Context context){

super(context);

mContext = context;

}

public void addLogoShow(){

textView = new TextView(mContext);

textView.setText("成功");

this.addView(textView);

//传递一个Runnable对象，1秒后执行该对象的run方法

handler = new Handler();

handler.postDelayed(run1,1000);

}

//执行的代码

private Runnable run1 =  new Runnable(){

public void run() {

String text = "";

text = ""+_number++;

textView.setText(text);

//再次传递一个Runnable对象，类似产生一种递归效果

handler.postDelayed(run1,1000);

if(_number == 10){

//移除回调

   handler.removeCallbacks(run1);

   textView.setText("跳转");

}

}};

}