The basic use of Handler, the source code analysis of common problems and the source code explanation of operation mechanism

1, Definition A set of Android messaging mechanism / asynchronous communication mechanism. 2, Function In the multi-threaded scenario, the sub thread needs to transfer the update UI operation information to the main thread to realize the processing of asynchronous messages. 3, Use There are two ways to use: One is to realize asynchronous ...

Posted on Sat, 16 Oct 2021 13:36:22 -0400 by dean7

Android Handler message mechanism core code

preface This paper mainly analyzes the key source code of handler message mechanism. You need to have some basic understanding of handler before reading. Here is a brief review: Basic composition The complete message processing mechanism consists of four elements: Message: the carrier of informationMessagequeue: a queue used to store messag ...

Posted on Wed, 29 Sep 2021 13:46:14 -0400 by qing