android 线程与handler的简单使用（一）

 //创建线程
class MyThand extends Thread{
        @Override
        public void run() {
            super.run();
            try {
                while (true) {
                    sleep(3000);
                    if(flage) {
                        Message message = new Message();
                        message.what = 0;
                        handler.sendMessage(message);//子线程数据发送到U线程
                    }
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

//创建handler 接受数据
    Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if(msg.what==0){
//                toast_Base("0");
                recyclerDataSetChanged();
            }
        }
    };

@Override
public void onResume() { 
    myThand=new MyThand();
    myThand.start();//开启子线程
    flage=true;
    super.onResume();
}