1. Experimental tasks
(1) Mastering writing layouts in XML files and Java code
(2) Mastering common layouts: relative layout, linear layout, frame layout and table layout
2. Experiment content
1. Write layouts in XML files and in Java code
2. Build a common layout
(1) Relative layout
(2) Linear layout
(3) Frame layout
(4) Table layout ...
Posted by fareasd on Sat, 10 Sep 2022 23:03:12 +0300
Memory leak: In Android program development, if an object is no longer needed to be used and should be recycled, but another object is still holding a reference to the object, which will cause it to fail to be recycled by GC. There will be a memory leak. One of the main reasons for OOM issues in Android programs when memory leaks. So when we wr ...
Posted by cityguru on Wed, 07 Sep 2022 12:08:39 +0300
Author: stars one Reprint address: https://juejin.cn/post/7128993794283798536
The Jetpack architecture recommends the use of MVVM structure. For this reason, several MVVM component libraries have been launched for our developers to quickly access. The first thing to talk about is ViewModel
Personal understanding: Activity is View, VM is ...
Posted by hassanz25 on Wed, 17 Aug 2022 10:50:46 +0300
?? More relevant knowledge??
1, View exception information
??public void printStackTrace()??public String getMessage()??public String toString() 2, Exception handling - throws declares an exception
1. Why do I need throws?2. Format of throws
? Code demonstration 3. Usage scenarios of throws4. Notes on the ...
Posted by Antnee on Wed, 10 Aug 2022 21:37:40 +0300
Java thread pool multi thread query database to improve query efficiency
Company data statistics report query, several large table Association query, including cross database query, data associated query, data filtering, data statistics.
Main table data 1
Main table data 2
Posted by ryadex on Tue, 09 Aug 2022 22:06:04 +0300
?? Blog homepage: ****
?? Series column: uiautomation
?? Welcome to like?? Comments??
I love python and look forward to growing up with you!!
Purpose: use uiautomation to get wechat friends and store them in txt files.
2, Specific steps
Enter address book management
Posted by lizzyd on Tue, 09 Aug 2022 13:03:39 +0300
Yesterday, a fan friend also wanted to learn how to develop Web, applet and Android. He asked if he could learn it in college?
What I learned in school is really limited:
In many colleges and universities, some professors are academic, and they have not done much development work. In class, they just follow the book, and their knowledge point ...
Posted by skali on Thu, 04 Aug 2022 21:47:07 +0300
Some of the most basic methods of storing and reading Bean objects have been described before, but they are not used in Spring at all. So this blog will introduce a simpler method of storing and reading Bean objects. The core of what you want to do is to use annotations. Let's take a look below.
?? Store Bean Objects
Posted by The14thGOD on Thu, 04 Aug 2022 21:30:46 +0300