下面是三种方法：
一、线程
new Thread(new Runnable(){
public void run(){
Thread.sleep(XXXX);
handler.sendMessage();----告诉主线程执行任务
}
}).start
二、延时器
TimerTask task = new TimerTask(){
public void run(){
//execute the task
}
};
Timer timer = new Timer();
timer.schedule(task, delay);
三、android消息处理
new Handler().postDelayed(new Runnable(){
public void run() {
//execute the task
}
}, delay);