今天啊打开这个DevEco Studio的话，已经提示有3.1Beta1版本的一个更新啊。然后看一下它的一些特性。本文也演示了如何在本地模拟器里面运行HarmonyOS版短视频。

主要特性

新特性包括：

• Added support for Windows 11 64-bit and macOS 13.x OSs, as well as the M1 chip for Mac.

• Added support for redirection from JS/ArkTS to C/C++ code in the editor.

• Added the device-cloud integrated development feature.

• Added support for importing Sketch source files to generate low-code pages and for using custom components in low-code development.

• Added the HarmonyOS 3.1 X86-based phone emulator.

• Added the release-type application stack parsing feature.

• Added support for C/C++ time travel debugging (also known as reverse debugging).

增强特性：

• Enhanced the low-code development experience by adding six ArkTS components (select, refresh, toggle, textpicker, datepicker, and timepicker) .

• Enhanced the ArkTS/TS editing experience by adding programming language specification check, code refactoring, and intelligent code completion.

• Enhanced the C/C++ editing experience by adding function reconstruction/extraction and quick fix of unused function parameters.

• Updated the SDK to API version 7 for lite wearable application development.

HarmonyOS SDK 更新内容：

Components to install:

- EmulatorX86 3.1.0.100

- Toolchains 3.2.2.2

- Previewer 3.2.2.2

- Toolchains 3.2.2.6

- Previewer 3.2.2.6

- ArkTS 3.2.2.6

- JS 3.2.2.6

OpenHarmony SDK 更新内容：

• API Version 9

• ArkTS  3.2.10.6  44.36 MB

• JS  3.2.10.6  13.92 MB

• Previewer  3.2.10.6  146.41 MB

• Toolchains  3.2.10.6  14.88 MB

本地模拟器

其实我比较关注的是本地模拟器。之前的本地模拟器只支持到API 6（HarmonyOS 2）。

而本次更新是可以支持API 9的。

同时，新版的模拟器里面也支持更多的设置，比如：摄像头、CPU个数、内存等等。

本地模拟器运行应用

以下是一个本地模拟器运行“仿抖音”的短视频应用。

完整演示效果可以见B站视频：https://www.bilibili.com/video/BV1ms4y1Z7jj/

源码

更多示例源码、HarmonyOS学习资料可见

1. 《跟老卫学HarmonyOS开发》 开源免费教程，https://github.com/waylau/harmonyos-tutorial

2. 《鸿蒙HarmonyOS手机应用开发实战》（清华大学出版社）

3. 《鸿蒙HarmonyOS应用开发从入门到精通战》（北京大学出版社）