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preface Strolling around Taobao without doing anything, I found that there was a second floor of Taobao on the home page. As shown below: The UI effect is very interesting, so I plan to roll one by hand. thinking The ScrollView is the first thing that comes to mind when scrolling the view, and then handle his gesture sliding event to dynami ...

Abstract factory pattern is an upgraded version of factory method pattern. Factory method pattern only produces one level of products, while abstract factory pattern can produce multiple levels of products. The following conditions are generally met when using the abstract factory pattern. There are multiple product families in the system. Each ...

In order to quickly read specific information, display or verify it in the source code of cloudleopard live app, the most popular solution is to "scan QR code". In this way, users do not need to use complex memory and logic. They can realize the requirements with a gentle sweep. It is very common in all kinds of apps. So today, let's ...

Design patterns are often asked in the interview. Since I wrote the single case pattern asked in detail yesterday, I might as well learn a design pattern every day. The overall feeling is that design patterns are very abstract and need to think about some problems, especially in daily code and work. I checked many blogs and found that everyone ...

Final report of fundamentals of mobile application design Project Name: On machine assessment of mobile application development foundation Tools, software and environment used: JDK，Android Studio 1, Subject background In the final computer examination, the contents of Experiment 4 and Experiment 5 and the small experiments completed ...

I Initial responsibility chain model Definition: multiple objects have the opportunity to process the request, so as to avoid the relationship between the sender and receiver of the request. Connect the object into a chain and pass the request along a chain until an object processes it. It may be a little obscure. Let's take a look at an exam ...

With feelings and dry goods, wechat search [Third Prince Ao Bing] pays attention to this programmer with a little something. This article GitHub https://github.com/JavaFamily It has been included. There are complete test sites, materials and my series of articles for the interview of front-line large factories. Recently, I was sharing a se ...

Basic principles of agent mode Basic introduction to static agent mode Proxy mode: provides an avatar for an object to control access to the object. That is, the target object is accessed through the proxy object The advantage of this is that additional function operations can be enhanced on the basis of the realization of the target obje ...

GOF creative pattern series Singleton modeFactory modeAbstract factory patternBuilder pattern Prototype mode reference material Shang Xuetang_ Simple factory modeShang Xuetang_ Factory modeRookie tutorial_ Factory mode 1. General Basic principles of object-oriented design OCP (open closed principle): a software entity should ...

Design pattern This article talks about several common design patterns. Create pattern The function of the creation mode is to create an object. When it comes to creating an object, the most familiar thing is to new an object and then set the related attributes. However, in many scenarios, we need to provide the client with a more friend ...