Handler基本用法

片断一：
mHandler = new Handler();
mRunnable = new Runnable() {
    @Override
    public void run() {
        currentPosition++;
        Log.d("recyclerBanner", currentPosition + " ");
        mOverFlyingLayoutManager.scrollToPosition(currentPosition);
        //  recyclerView.smoothScrollToPosition(currentPosition);
        mHandler.postDelayed(this, 3000);
    }
};
mHandler.postDelayed(mRunnable, 3000);

片断二：

mainHandler.sendEmptyMessageDelayed(Url.Banner,3000);

@Override
protected void disposeMainHandlerCallMethod(Message msg) {
    super.disposeMainHandlerCallMethod(msg);
    switch(msg.what){
        case Url.Banner:
            currentPosition++;
            Log.d("recyclerBanner", currentPosition + " ");
            mOverFlyingLayoutManager.scrollToPosition(currentPosition);
            //  recyclerView.smoothScrollToPosition(currentPosition);
            mainHandler.sendEmptyMessageDelayed(Url.Banner,3000);
            break;
        default:break;
    }//end of switch
}

片断三：
 public void handleMessage(Message msg) {
        super.handleMessage(msg);
        switch (msg.what){
            case GET://get请求
                tv_result.setText(msg.obj.toString());
                break;
            case POST://post请求
                tv_result.setText(msg.obj.toString());
                break;
        }
    }

 
 new Thread(){
        @Override
        public void run() {
            super.run();
            try {
            String resutl = get("http://api.m.mtime.cn/PageSubArea/TrailerList.api");
                Message msg = Message.obtain();
                msg.what = GET;
                msg.obj = resutl;
                handler.sendMessage(msg);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }.start();
}