Programmer Group

RecyclerView The scalability of ListView is not good. It can only realize the vertical scrolling effect of data, but not the horizontal scrolling. RecyclerView not only can easily achieve the same effect of ListView, but also optimizes the shortcomings of ListView. RecyclerView scroll horizontally 1. RecyclerView is a new c ...

Preface As for what spring security is, there are two main functions: user authentication and authorization. That is, we often say that users can only perform other operations after logging in. If they do not log in, they will be redirected to the login interface. Some users have permission to perform an operation, while others are authorized i ...

When using listview/recycleview, we often encounter a demand: a layout is suspended under a ListView, and when the items of ListView exceed the bottom of the screen, they are fixed at the bottom. At first, I thought of using ListView's footer to realize this function. Later, I found a simple layout to realize this function. L ...

Today, let's talk about the use of DataBinding in the list RecyclerView List binding List display is often used in App. Data Binding plays an important role in the list, directly binding data and events to each list item.   RecyclerView In the past, we used to use ListView, GridView, or some customized views on GitHub to do waterfall flo ...

When the table slides up and down, the first row is fixed and linkage is not required. The effect is as follows:       Right slide, slide, select:      The structure is as follows: Each Item of the header LinearLayout and the table content ListView is the same LinearLayout. If you want to have different lines, set the wi ...

Recently, the company's project needs to be transferred from SQL Server to MySQL. In the process of transferring, some differences between the two grammars are encountered. After finding a solution on the Internet, it is recorded here. Since there may be many solutions, I only record what I have used for reference. 1. Splicing string Using the ...

Interceptor (interceptor) 1, Interceptor overview Interceptor is one of the most powerful features of struts 2. It is a mechanism that allows users to do some processing before Action execution and after Result execution. Interceptors are conceptually the same as servlet filters or JDK proxy classes. Interceptors allow for crosscutting, separa ...

In recent demand, Android app calls remote webservice and checks it on the Internet. In general, it uses ksoap2 for a try. At first, it is not successful. Then it uses axis used in web development last year for reference. Finally, it returns to ksoap2. After several attempts, it is finally successful. The share is as follows: ...

introduction: Recently, the company is working on an education, training, learning and online examination project. I am mainly engaged in the online course module, mainly doing the course classification, course, courseware creation and online learning and statistical functions, because courseware involves many types, such as video, audio, graph ...

1. Create project / module New empty project:springMvcStudy New module: type Maven webapp, name mvcStudy 2. Set Sources and Resources for module Create two new folders under mvcStudy/src/main: java,resourcesOpen File/Project Structure/Project Settings/Modules, select mvcStudy, and click the Sources tabSet the java folder to Sources and the ...