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Android system provides three kinds of animation: frame animation, gap animation and attribute animation. Here we analyze and summarize the attribute animation. Attribute animation is more powerful than frame animation and gap animation. Frame animation and gap animation can only be applied to View and its subclasses. Attribute animation can m ...

1. Code block overview Code block: also known as initialization block, it is a member of a class, similar to a method. It encapsulates logical statements in the method body and is surrounded by {};And methods: 1. No method name, no return value, no parameter, only method body;2. It is not called explicitly through an object or class, but im ...

Environment construction In addition to the xml in the previous document, a context:component constraint should be added 1. xml configuration <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www. ...

1, Foreword The basic part of the Spring framework is too long. It is divided into several articles to consolidate the learning record. 1. What is Spring The spring framework was created due to the complexity of software development. Spring uses basic JavaBean s to accomplish things that could only be done by EJB s before. However, the use o ...

requests Crawl the search result page corresponding to the specified term of Sogou (simple web page collector) UA: user agent (identity of request carrier) UA camouflage: the server of the portal website will detect the carrier identity of the corresponding request. If it is detected that the carrier identity of the request is a browser, it ...

  catalogue Dynamic binding style (supplement to v-bind): Pass class Use the form of variables or expressions     2. Object form  3. Array form Through style 1. Variable or expression 2. Object form 3. Array form Dynamic binding style (supplement to v-bind): Pass class Use the form of variables or expre ...

overview LeetCode Hot: Full Permutation, rotating image, letter ectopic word grouping, maximum subarray and, jumping game Design mode: adapter mode, decorator mode, agent mode, command mode and observer mode LeetCode Hot 2.21 full arrangement Given an array nums without duplicate numbers, all possible permutations are returned. You can ...

--------------Modularization related specifications------------------ 1.1 modular overview Main problems of traditional development mode name conflictFile dependency Solve the above problems through modularization Modularization is to encapsulate a single function into a module (file). Modules are isolated from each other, but internal mem ...

Source: Juejin cn/post/7011435192803917831If is often used in the development process else... Judge, throw exceptions, branch processing and other operations. These if else... Flooding in the code seriously affects the beauty of the code. At this time, we can use the Function interface of Java 8 to eliminate if else.... if (...){ throw new ...

CSS Icon How to add icons The easiest way to add icons to an HTML page is to use an icon library, such as Font Awesome. Adds the name of the specified icon class to any inline HTML element (such as < I > or < span >). All icons in the following icon library are scalable vectors that can be customized using CSS (size, color, shado ...