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Scenario Reproduction Many times, when we write programs, there will be such a situation, that is, code multiple-choice operations. For example, the following operations. For example, there are four view views (A, B, C, D, respectively). When the button a is clicked, the background color of view A and B changes. Whe ...

In fact, I don't learn much, I just understand others, and then change it to my own, so for some common points of knowledge sometimes I can't write them out by myself, so sort out my commonly used small points of knowledge. 1. Frequently asked questions about creating an activity The newly created activity must be configured in the manifest ...

I'm very sorry to have paid attention to the columnists, but there have been few updates in the last month. This time share a react mobile end encapsulated rolling plug-in. When we do vertical rolling on the mobile end, there will be various problems, such as carton, penetration, compatibility, and the most intolerable is carton, such as the us ...

It's not just the Palm Heroes Alliance, but also the micro blog discovery page. When sliding to a certain distance, it automatically hides the rotation map, or the layout under the title bar. And make the tablayout top. Similarly, the layout of the personal pages of the brief books is the same. Some of the image processing is not clear. It ...

Preface The use of animation is a common knowledge in Android development This article will introduce in detail the principle of attribute animation in Android animation Animation Types A series of articles on Android animation For the use of animation, please refer to the article:Android Attribute Animation: This is a very detailed su ...

Respect for other people's work results, reprinted please indicate the source: http://blog.csdn.net/gengqiquan/article/details/74331845 This article is from: [gengqiquan's blog] I haven't blogged for more than a month. It's really a lot of things recently. Yesterday, when review ing the company's project code, I found that the onActivityResu ...

This article is reproduced on the blog of Dashen xiaanming( http://blog.csdn.net/xiaanming/article/details/17483273): In the past, I did not understand what callback was. Every day I heard people say to add a callback method. I thought to myself, what is called callback method? Then I look for it on the internet, and I don't know much abo ...

View draws trigons, measurements, layouts, paintingsToday we analyze the measurement process View's measurements were initiated from ViewRootImpl and the View needs to be redrawn, all by sending a request to ViewRootImpl and then organizing the redrawingOne step in the redrawing process is to measure and analyze the measurement process by code ...

Android animation is an indispensable requirement in development. With the increasingly complex animation effects of designers, it is necessary to master animation skills as a qualified Android engineer. Frame-by-frame animation Frame-by-frame animation is to make use of the effect of human visual staying, in constant change, feel the effect ...

Android for LED light display Project Address EZLedView project address Effect Graph a principle You often see this kind of display effect in billboards. Use LED lights to display text or even pictures. How do you achieve this effect in Android? The usual practice is to get bitmap information of the font and then calcul ...