Programmer Group

1. The Role and Relation of the Three Mesage (message) is the medium through which the same or different threads interact, corresponding to an operation. Looper (Looper) is a prerequisite for creating handler. It is mainly used to create an instance of MessageQueue (message queue) of the current thread (a Looper corresponds to a Thread number ...

For soft keyboard deletion events, there are many schemes on the web as follows, but google api also shows that this is just listening on the hardware keyboard and not triggering on the software keyboard (I tested that the soft keyboard can listen on the delete key, other keys like numeric letters do not trigger the listening method here). e ...

GSON: Gson is a JSON format parsing package developed by google. It is characterized by knowing the JSON data format transmitted before parsing json, and defining a series of classes with the same hierarchical structure as json. In other words, if the JSON structure of the transmission is: { "name":"relin", "sex":"male", "a ...

Wechat Public Number Personal Blog Know about This article is not written by myself, but I think it is very helpful to me. So I share it with you. The original link is at the bottom. Thank you for watching.1. Null (undefined) verificationWhen we create a new variable, we usually verify that the value of the variable is null or undefined. ...

From: http://geek.csdn.net/news/detail/199421 The benefit of the JavaScript ServiceWorker API is that it allows web developers to easily control the cache.Although technologies such as ETags are also used to control the cache, using JavaScript allows programs to control the cache more powerful and free.Of course, there are powerful benefit ...

1. Next to the previous blog we solved the RecyclerView Linear List Split Line drawing problem: 1. Effects: We know that Google engineers don't have the same divider attribute set for RecyclerView as listView to draw split lines.So let's solve the RecyclerView problem today.The following results have been achieved: 2. Analyse how to dr ...

First, record how the linux client accesses the shared folder of windows or linux with commands The first step is smbclient-L//192.168.100.5-U public (smbclient is the command-L is to list which shared files the server has-U followed by the user name) The second step is to enter the password and see the folder shared by the server. Then you e ...

Original works, reprinted please indicate the source Material Design was briefly introduced in previous articles. Since Android 5.0, Google has designed all built-ins in the Material Design style. I personally like this style, so I have written a full Material Design style App for further study. Project address: https://github.com/duya ...

Now that I've studied customizing view s recently, I'll take a note: People might as well go to google developer and learn by themselves Custom views are used to customize views for special effects or to implement complex layouts when you are unwilling to nest multiple views. First, you need to inherit the View class, or if a feature compari ...

iu Written in front There are many articles on using instrument ed leaks tools to detect memory leaks on the Internet, but almost no one mentions one detail: not all memory leaks can detect. I used to think that if I used the leaks tool to run back and forth several times, I would be successful without showing a memory leak until I packaged a ...