Kotlin: how to achieve multi-threaded synchronization?

Problem backgroundMultithreaded tasks to be executed: Task 1 and task 2 are executed in parallel; When all execution is completed, execute task 3.// Each task takes time to simulate through sleep val task1: () -> String = { sleep(2000) "Hello".also { println("task1 finished: $it") } } val task2: () -> String = { sleep(2000) ...

Posted on Tue, 07 Dec 2021 03:49:30 -0500 by lulon83

Some Tips in Kotlin development

Scope function selection At present, there are let, run, with and apply   and   also five scope functions. The official document has a table to illustrate the differences between them: To sum up, there are several differences: 1. apply and also return context objects. 2,let,run   And with return lambda results. 3. The ref ...

Posted on Tue, 07 Dec 2021 03:21:03 -0500 by febrarian

The most complete network: Jetpack AAC (-) analysis

Original link: https://juejin.cn/post/689387...Android 35 contentJetpack5 contentsLifecycle 1 contentAndroid architecture component 5 contents1, Introduction to Android Jetpack1.1 what is jetpackThe official definition is as follows:Jetpack is a suite composed of multiple libraries, which can help developers follow best practices, reduce templa ...

Posted on Tue, 07 Dec 2021 00:06:25 -0500 by chrischen

Kotlin: how to achieve multi-threaded synchronization?

  Problem background Multithreaded tasks to be executed: Task 1 and task 2 are executed in parallel; When all execution is completed, execute task 3. // Each task takes time to simulate through sleep val task1: () -> String = { sleep(2000) "Hello".also { println("task1 finished: $it") } } val task2: () -> String = { sleep(2 ...

Posted on Mon, 06 Dec 2021 23:57:03 -0500 by nahydy

Learning from beginning to end of Android cultivation manual Kotlin [complete]

Sharing of previous articles Click jump = > stay up late and fight Android again from bronze to King - development efficiency plug-in Click jump = > unity particle special effects series - Tornado preform is ready, and the unitypackage package can be used directly! Click jump = > my sister asked me to unlock the new skills of dolls: ...

Posted on Mon, 06 Dec 2021 15:55:24 -0500 by shastry

Kapok mine clearance based on HarmonyOS ArkUI 3.0 framework

prefaceHarmonyOS ArkUI 3.0 framework trial first experience 2 comes |゙ ( ̄▽  ̄) ノミ| Ю, This time compared with the last time   Synthetic development practice , some contents are added: display animation, page Jump and data transfer, Grid container Grid, custom window, etc. Originally, I wanted to make distributed HarmonyOS ArkUI 3.0 ka ...

Posted on Sat, 04 Dec 2021 21:02:03 -0500 by staggman

Android Studio realizes Baidu map and positioning

1, Functional requirements Develop Baidu map positioning according to official documents APP,Displays the coordinates of the current position. 2, Implementation process 1. Experimental environment Android Studio3.1 2. Get Baidu developer KEY https://lbsyun.baidu.com/index.php?title=androidsdk (1) Create user This part is the same a ...

Posted on Sat, 04 Dec 2021 17:49:27 -0500 by php1

Advanced Android custom controls: Canvas operation

I originally wanted to put the canvas operation in the later part, but I found that many graphics rendering are inseparable from the canvas operation, so I'll explain the basic operation methods of the canvas first. 1, Quick reference table for common operation of Canvas Operation typeRelated APIremarksDraw colordrawColor, drawRGB, drawARGBFi ...

Posted on Fri, 03 Dec 2021 19:57:13 -0500 by valshooter

Android plug-in architecture - Analysis of Activity startup process

summaryAndroid plug-in architecture. At present, there are many third-party frameworks. In the early years, I used the DL framework. The source code of this framework is relatively simple, mainly using static agents. If we want to write a plug-in architecture framework, the problems to be solved will be divided into several aspects: class loadi ...

Posted on Fri, 03 Dec 2021 15:36:26 -0500 by SerpentSword

Android 10.0 (q) AOSP adds application lock function

preface The function of applying locks can be said to be very common, which is to intercept the corresponding code of startActivity. At the beginning, I found some information on the Internet, but there was nothing suitable for direct use, so I did it myself. Here is a simple note. Android application lock implementation Then give everyone ...

Posted on Fri, 03 Dec 2021 11:11:56 -0500 by msing