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1, Type of touch eventACTION_DOWN: user's finger press operation. A press operation marks the beginning of a touch eventACTION_UP: user's finger lifting operation. One lifting marks the end of an eventACTION_MOVE: before the finger is pressed and lifted, if the moving distance exceeds a certain threshold, action will be triggered_ MOVEOne touch ...

1. Distributed theory 1.1 basic definition of distributed Definition of distributed system principle and paradigm: "A distributed system is a collection of several independent computers that are like a single related system to users." distributed system is a software system based on network. 1.2 architecture development and evolu ...

Recently, I am working on an app for memorizing words as my graduation project. I want to design a function to switch the language from English in the app, and record the effect and steps of this implementation. Realization effect Chinese mode English mode PS: please don't make complaints about my garbage. Implementation principl ...

1, Partitioned storage concept Storage in Android can be divided into two categories: private storage and shared storage 1. Private storage: each application has its own private directory in the internal storage. Other applications can't see it and can't access it. Address: / storage/emulated/0/Android/data / package name / files The p ...

brief introductionOn the interface of some music or video playback, when resources are still loaded, the origin (thumb) of the progress bar will display a circle effect. After the resource is loaded, it switches back to the static effect. This effect enhances the user experience.Generally speaking, there are art personnel responsible for design ...

Kotlin learning (VII): function Basic usage of function The Kotlin function must start with the fun keyword, followed by the function name and a pair of parentheses. In the parentheses is the function parameter list. If the function has a return value, add a colon (:) after the parentheses, followed by the return value type of the function. ...

android system source code compilation steps 1. Source build / envsetup.sh & & Lunch XXX or. / build / envsetup.sh & & Lunch XXX. After executing the envsetup.sh script, the variables in envsetup.sh become global variables, and the functions can also be used directly in the command line of the current terminal. Common function a ...

Series articles Tip: go to the Android learning column and watch more! Click me directly – > Android learning column preface Create a new project named LBSTest. Baidu map (6) moves to my location (picture and text + code) The map is successfully displayed, but maybe it's not what you want. Because this is a default The map s ...

Basemvpvview is the basic View layer interface: public interface BaseMvpView { void showError(String msg); void complete(); void showProgressUI(boolean isShow); } You can see that some public interface methods are defined. In fact, this interface may not be required, but it is generally written for convenience. BasePresenter ...

Why full burial?Buried points in the past manual formIn the past, the buried points were artificially defined and selectively buried. The number of buried points continued to increase after multiple version iterations.Calling basically the same code in each code block is highly intrusive. If you replace the SDK later, you may make a lot of chan ...