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App Inventor 2 MQTT拓展入门(保姆级教程) · App Inventor 2 中文网

...试,效果如下: 云平台服务器端可以查看订阅设备数量,以及消息发送历史: .aia 源码下载 « 返回首页 《App Inventor 2 UrsPahoMqttClient 拓展中文文档(完整版)》 准备工作 APPINVENTOR测试平台:AppInventor2...
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软件里面自带图表组件绘制出来曲线 带有数据点,请问如何取消该点 - Ap...

...是上面这种类型,想请教一下如何把这个点取消掉 原生图表数据点无法去掉。要想使用高级/定制图表,考虑使用拓展:https://bbs.tsingfun.com/thread-1688-1-1.html,或者使用js版本echarts.js,使用Web浏览器与js交互实现高度定制图...
https://bbs.tsingfun.com/thread-1981-1-1.html 

AppInventor2可以接收VR眼镜头传吗? - App应用开发 - 清泛IT社区,为创新赋能!

Q:想问一下你这个软件可以接收VR眼镜头传吗? A:支持,不过是间接调用vr眼镜配套app,使用 activity 启动器组件,核心功能还得是 vr 提供商 app,核心代码块参考如下: 应用程序(对于 Expeditions 或 Virtuality)...
https://bbs.tsingfun.com/thread-2037-1-1.html 

App inventor可以在不开发拓展情况下实现实时定位与导航吗? - App应用开...

想开发一个出行类app,想要实现图片中功能,在app inventor里能实现吗,或者有什么好建议吗 原生地图组件可以实现,不过国内访问稳定性不保证:https://bbs.tsingfun.com/thread-1786-1-1.html 高德地图API也可以实现电子围栏功能...
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“AppInventor学院”App国内各大市场上架之旅 - App应用开发 - 清泛IT社区...

...政策》在线网页url,告知用户你如何访问及访问隐私权限用途,可以参考:https://www.fun123.cn/static/privacy_policy.html app启动时必须弹窗,展示上面隐私政策网页,用户点同意才能继续,否则直接退出app。不仅如此,还需要在Ap...
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jQuery: Adding two attributes via the .attr(); method

...the explanation, that's why I chose your answer over Derek's. Thanks Adam. PS. I'll accept your answer in 7 minutes, it's not letting me accept it right now. – Ricardo Zea Oct 22 '12 at 15:17 ...
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PostgreSQL: Can you create an index in the CREATE TABLE definition?

... case, for example b VARCHAR(10) NOT NULL INDEX idx_tab_b gin (b gin_trgm_ops) .. how to add more parameters without repeat column name? – Peter Krauss Mar 20 at 2:30 ...
https://www.tsingfun.com/it/cpp/1508.html 

xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false...

...\Microsoft Visual Studio 11.0\VC\include\xtree(1775): 参见对正在编译函数 模板 实例化“std::pair<_Ty1,_Ty2> std::_Tree<_Traits>::_Insert_nohint<std::pair<const _Kty,_Ty>&,_Nodety>(bool,_Valty,_Nodety)”引用 1> with 1> [ 1> _Ty1=std::_Tree_iter...
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How to link to part of the same document in Markdown?

...e, but the &lt;a name="abcde"/&gt; solution ought to be quite innocuous. (PS: It might be OK to put the anchor in the line you wish to link to, as follows: ## &lt;a name="head1"&gt;Heading One&lt;/a&gt; but this depends on how Markdown treats this. I note, for example, the Stack Overflow answer ...
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How to clone ArrayList and also clone its contents?

...e never to override the clone method and never to invoke it except, perhaps, to copy arrays. If you design a class for inheritance, be aware that if you choose not to provide a well-behaved protected clone method, it will be impossible for subclasses to implement Cloneable. This book also ...