Programmer Group

Basically all by calling get () There are many ways to use Message, whether it's Handler#obtainMessage(), Message#obtain(), or even Handler#postRunnable(), which is essentially a static method to call Message obtain(). public final Message obtainMessage() { return Message.obtain(this); } public final boolean post(@NonN ...

1. Preface This paper is mainly about binder series The summary notes of the article are mainly to clarify the overall process and overall architecture of the binder. During this period, the code will be re read according to Android R, and the content will be adjusted according to their own understanding to deepen their overall understanding o ...

preface In previous classes, we have learned about the whole android program in detail, from Startup to painting. From this, we have involved the Canvas drawing board and our Paint control color style brush. Then we will not explain in detail in the previous basic chapter. Those API s have been published in the previous basic chapter, I also a ...

3. Timer (Master) * Timer class:timer public class Demo5_Timer { /** * @param args * timer * @throws InterruptedException */ public static void main(String[] args) throws InterruptedException { Timer t = new Timer(); t.schedule(new MyTimerTask(), new Date(114,9,15,10,54,20),3000); wh ...

//If the current cache does not meet the requirements, close it if (cacheCandidate != null && cacheResponse == null) { closeQuietly(cacheCandidate.body()); // The cache candidate wasn't applicable. Close it. } // If the network cannot be used and there is no qualified cache, a 504 error will be thrown directly if (networkReques ...

If you don't understand it yet, look at the simplified code below: // Article Error Code🙅Simplification for (i in 0..100) { // Simulate Generated Data flow<Int> { emit(i) }.debounce(500) // This is an invalid limit because emit of flow only executes once... .collect { println("----------------- ...

public boolean clipRect(float left, float top, float right, float bottom) public boolean clipRect(int left, int top, int right, int bottom) public boolean clipRect(@NonNull Rect rect) public boolean clipRect(@NonNull RectF rect) 2,clipOutPath public boolean clipOutPath(@NonNull Path path) Description: only the canvas area outside the pat ...

Installation of simulatorRun the fluent project to the simulator and real machineFlutter common commands Construction of development environment 1. Download the fluent SDK The fleet SDK consists of two parts, one is the Dart SDK, and the other is the fleet SDK, because the fleet is based on Dart. You can download it in two ways: one is Git d ...

Add and animate these small widget s. Let's slowly increase the learning curve one by one. First of all, we need to know some basic knowledge about fluent animation. Understand the components of basic animation in fluent Animation is just some values that change over time. For example, when we click a button, we want to use animation to make ...

1. Background Like its name, LiveData is an observable data holder. Unlike conventional observable, LiveData has life cycle awareness, which means that it can correctly handle the life cycle in activities, fragments and services. The data source of LiveData is generally ViewModel, or other components that can update LiveData. When the data ...