Programming VIP

The previous article talked about the use of Dio's CancelToken. This article analyzes how CancelToken can cancel network requests from the source code. Relevant contents are as follows: Implementation of CancelToken classCancelToken how to cancel a network request CancelToken class There is not much code for the CalcelToken class. We can dir ...

Existing problems Recently, I was working on A project A, which is already A system app, but the App is out of memory and the process will die after the user cleans up the background. In order to ensure that A is always running, A daemon is developed to keep and pull up A. Requirements: After startup, A cannot start itself to ensure rapid sta ...

Recently, I saw several articles related to Jetpack MVVM, which made me want to get into this mess. I came into contact with Jetpack's set of development tools in the second half of 2017, and have since taken it as the main framework for development. During this period of use, I stepped on some pits and accumulated some experience. In order to ...

Method 1 (new project): Use the latest Canary version of Android studio, and check Use Kotlin script(.kts) for Gradle build files when creating a new project Mode 2: All items in the project will be The gradle file is changed to gradle. KTS, and modify the content syntax to kotlin script syntax (for details, please refer to demo), includin ...

Realization idea ==== By monitoring the state of the keyboard and the state of the commodity card, the translation y animation is made for the bullet screen area. The implementation idea is very simple. There are some difficulties below Implementation method of monitoring keyboard state How to get the height of the keyboard Monitor keybo ...

Attribute Animation: control the movement of obstacles and submarines and various dynamic effects Stop talking and look at things first! The following describes the implementation of each part of the code. Background Bar First, define the obstacle base class Bar, which is mainly responsible for drawing the bitmap resources to the specified ...

HandlerActivity.runOnUiThread()View.post(Runnable r) Let's talk about the Handler mechanism Handler is mainly composed of the following parts. Handler Handler is a message auxiliary class, which is mainly responsible for sending various message events to the message pool Sendmessage() and the handler that handles the corresponding message e ...

public WindowManager.LayoutParams wmParams; public WindowManager getWm() { return wm; } public void setWm(WindowManager wm) { this.wm = wm; } public WindowManager.LayoutParams getWmParams() { return wmParams; } public void setWmParams(WindowManager.LayoutParams wmParams) { this.wmParams = wmParams; this. ...

bool JavaVMExt::IsBadJniVersion(int version) { // We don't support JNI_VERSION_1_1. These are the only other valid versions. return version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4 && version != JNI_VERSION_1_6; } JNI_Onload function is a treasure place for dynamic registration. We can register in RegisterNatives. T ...

1: AR development environment configuration in Unity 1. Android development environment configuration (1) : create a project, click File build settings, and select the Android platform. If the Android development package is not downloaded, you need to download the Android development package first. You can directly click the link on this pag ...