【Android】动态更新UI

private Handler handler=new Handler(){
    @Override    public void handleMessage(Message msg) {

strs.add(msg.obj.toString());

        adapter.notifyDataSetChanged();
    }
};



new Thread(){
    @Override    public void run() {
        super.run();
        try {
            sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        Message msg=new Message();
        msg.obj="hello";

handler.sendMessage(msg);

    }
}.start();

   private Handler handler=new Handler();    

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                    handler.post(new Runnable() {
                        @Override                        

                        public void run() {
                            strs.add("handler post");
                            adapter.notifyDataSetChanged();
                        }
                    });

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