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关于作者：I’m westinyang

序言

• 最终编译的几个Qt示例应用视频演示：https://www.bilibili.com/video/BV1NG411Q7QH
• HarmonyOS 4.0 也是可以运行的，不过要改下runtimeOS配置为HarmonyOS，并签名调试运行到真机上
• 最终打包的4个Qt示例应用的hap包，见文章末尾附件

开发环境

• Windows 11
• DevEco Studio 3.1 Release
• OpenHarmony Full-SDK 3.2.12.5
• Qt For OpenHarmony SDK Qt5.12.12_alpha_v3

环境搭建

• OpenHarmony-SIG / qt
• Qt For OpenHarmony SDK使用说明 先参考仓库文档进行操作
  • 下载 Qt For OpenHarmony SDK
  • Qt IDE 开发环境配置
  • Qt Widget 示例编译及部署

开源仓库的Wiki中图文并茂，写的比较详细，不过还是有一些遗漏或者有点模糊的地方，下面是我在搭建开发环境是碰到的若干问题，并给出了相应的解决方式

环境变量配置问题

OHOS_SDK_PATH 一定要指向 OpenHarmony SDK 中 native 文件夹的上级目录

构建套件配置问题

如果你碰到提示：Qt没有被正确安装，请运行make install，如下图所示

则需要在 qmake.exe 同一文件夹下（qt_oh_sdk_3.2.12.5_bin\Qt5.12.12\aarch64-windows-ohos\bin），创建一个 qt.conf 文件（ANSI格式），内容为：

[paths]
Prefix = ..

然后删除刚才添加的qmake.exe，再重新添加一次即可

应用运行闪退问题

应用运行闪退，查看log定位问题

11-07 18:37:01.188 4663-4663/? W C03f00/ArkCompiler: [default] GetNativeModuleValue:153 GetNativeModuleValue: currentModule /data/storage/el1/bundle/entry/ets/modules.abc, find requireModule @app:com.example.qtdigitalclock/entry/plugins_platforms_qopenharmony failed
11-07 18:37:01.188 4663-4663/? E C03f00/ArkCompiler: [default] Call:1312 occur exception need return
11-07 18:37:01.188 4663-4663/? I C01300/Appkit: [main_thread.cpp(operator():1055)]Js uncaught exception callback come.
11-07 18:37:01.188 4663-4663/? I C01300/Appkit: [main_thread.cpp(operator():1077)]JS Stack:
11-07 18:37:01.188 4663-4663/? I C01300/Appkit:     at anonymous (entry/src/main/ets/native/QtApplication.ts:59:13)
11-07 18:37:01.188 4663-4685/? E C01400/OHOS::ROSEN: print log error in vsprintf_s
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: [main_thread.cpp(operator():1106)]
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: com.example.qtdigitalclock is about to exit due to RuntimeError
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: Error type:TypeError
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: Error message:Cannot read property setDisplayMetrics of undefined
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: SourceCode:
11-07 18:37:01.191 4663-4663/? E C01300/Appkit:             qpa.setDisplayMetrics(d.densityDPI, d.densityPixels, d.scaledDensity, data.width, data.height, data.width, data.height);
11-07 18:37:01.191 4663-4663/? E C01300/Appkit:             ^
11-07 18:37:01.191 4663-4663/? E C01300/Appkit: Stacktrace:
11-07 18:37:01.191 4663-4663/? E C01300/Appkit:     at anonymous (/ets/native/QtApplication.ts:78:7)

找到 src/main/ets/native/QtApplication.ts

import qpa from "libplugins_platforms_qopenharmony.so";

......

this.windowStage.on("windowStageEvent", (state) => {
  qpa.updateApplicationState(state);
  console.log("window stage changed", state);
});

错误原因是找不到 libplugins_platforms_qopenharmony.so

• 这个so的位置在 qt_oh_sdk_3.2.12.5_bin\Qt5.12.12\aarch64-windows-ohos\plugins\platforms\libplugins_platforms_qopenharmony.so
• 把 libplugins_platforms_qopenharmony.so 复制到项目的 entry\libs\arm64-v8a 目录下

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