Shulou(Shulou.com)05/31 Report--

This article introduces the knowledge of "how to implement asynchronous messaging mechanism in android". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Handler 、 Message 、 Loopler 、 MessageQueen

First, let's take a look at one of the most common uses of Handler that we usually use.

Handler handler = new Handler () {@ Override public void handleMessage (Message msg) {super.handleMessage (msg); / / perform some UI operations and other processing} new Thread (new Runnable () {@ Override public void run () {Message message = Message.obtain ();. Handler.sendMessage (message);});}

Take a look at the source code of the constructor of handler

Public Handler () {this (null, false);} / / he will call the following constructor public Handler (Callback callback, boolean async) {if (FIND_POTENTIAL_LEAKS) {final Class in this class

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.