Android handler的使用简单示例

Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            Bundle data = msg.getData();
            String val = data.getString("value");
            Toast.makeText(MainActivity.this, "获得的结果是:"+val, Toast.LENGTH_SHORT).show();
        }
    };

Runnable networkTask = new Runnable() {
        @Override
        public void run() {
            // TODO
            // 在这里进行 http request.网络请求相关操作
            GetServiceJsonData getJson=new GetServiceJsonData();
            String getStr = getJson.getServerInfo("");
            Message msg = new Message();
            Bundle data = new Bundle();
            data.putString("value", getStr);
            msg.setData(data);
            handler.sendMessage(msg);
        }
    };