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使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
App Inventor 2 源码商店
...度充满，屏幕底部对齐/li>li>代码块：添加按钮及图标，id从1开始，最后初始化即可/li>li ... 作者： ...
Google Sheets API Setup · App Inventor 2 中文网
...essage, there may be an error with the range that you
provided. This could mean that the sheetName you’ve provided does not actually
exist, or that the reference you provided is not valid A1-notation. To learn
more about A1 notation, see this reference:
https://developers.google.com/sheets/api/gui...
App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 · App Inventor 2 中文网
...不将其保存到已创建的组件列表中，因此它不会关联到 ID。请注意，你无法直接在 Screen 中创建组件，你需要事先在 Screen 中设置布局才能执行此操作。
将已创建组件的 ID...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...牙App
蓝牙App开发示例
蓝牙App控制硬件
UUID分为标准UUID和厂商自定义UUID
BLE专业文档
最后做个推广
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低功耗蓝牙(BLE)以低功耗、低成本、开发简便逐渐被广泛应用，本文主要介绍一款较...
App Inventor 2 打造个性化酷炫的底部导航条 · App Inventor 2 中文网
...充满，屏幕底部对齐
代码块：添加按钮及图标，id从1开始，最后初始化即可
可以在事件中指定某个Tab选中
可在属性中设置facetype，定制字体
注：可以在导航条的切换事件中通过同一屏幕组件的显示和...