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乐高机器人®组件 · App Inventor 2 中文网
...erface to a color sensor on a
LEGO MINDSTORMS EV3 robot.
属性
AboveRangeEventEnabled
Specifies whether the AboveRange event should fire when the light level
goes above the TopOfRange.
BelowRangeEventEnabled
Specifies whether the BelowRange event should fire when the light level
goes ...
将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
...able microcontroller and can provide input/output functionality for a wide range of applications. By building out IOIO/MOIO board support for AppInventor, creating a robotics kit and accompanying tutorials, we hope to make hardware programming more accessible.
The Kit
For sensors, the kit includes ...
Google Sheets API Setup · App Inventor 2 中文网
...json
file you got from the Service Account setup steps.
Unable to parse range: ______
If you get this error message, 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 va...
数据存储组件 · App Inventor 2 中文网
...Additionally, this returns the
row number for the new row.
FinishedClearRange()
The callback event for the ClearRange block, called once the
values on the table have been updated.
FinishedRemoveCol()
The callback event for the RemoveCol block, called once the
values on the table have been...
传感器组件 · App Inventor 2 中文网
...
检测简单步数时(简单步数,距离)
当检测到原始步骤(raw step)时运行此事件。
检测行走步数时(行走步数,距离)
当检测到步行步骤(walking step)时触发此事件。步行步骤是看起来涉及向前运动的步骤。
方法
复位()
重置...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...×4 = 104 Megabytes. Typical amounts of memory available to a running app range anywhere from 20 to 50 Megabytes (not to mention that MIT App Inventor requires the app source file, including images, to be less than 5 Megabytes). So the app will simply not work, and the project will get an OutOfMe...
App Inventor 2 扩展 · App Inventor 2 中文网
..., and they can be imported into projects as needed. With extensions, the range of App Inventor apps can be virtually unlimited.
One use of extensions, for example, is for educators and educational software developers to provide extension components tailored to specific lessons and activities that...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...wo lines formed by the fingers.
The angles we use are in degrees and they range from -360 to 360 degrees. The sign of the angle indicates the direction of rotation. A positive angle means clockwise rotation, and a negative angle means counter-clockwise rotation.
We use the MotionEvent class in And...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...wo lines formed by the fingers.
The angles we use are in degrees and they range from -360 to 360 degrees. The sign of the angle indicates the direction of rotation. A positive angle means clockwise rotation, and a negative angle means counter-clockwise rotation.
We use the MotionEvent class in And...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...wo lines formed by the fingers.
The angles we use are in degrees and they range from -360 to 360 degrees. The sign of the angle indicates the direction of rotation. A positive angle means clockwise rotation, and a negative angle means counter-clockwise rotation.
We use the MotionEvent class in And...