... 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...

...or. Be patient: The emulator takes a long time to start, even a minute or more. That’s because it’s booting up the virtual phone from scratch. The emulator will appear in its own window on your computer. As you work, you’ll need to switch among the emulator window, the Blocks Editor, and the...

...by clicking the button on below, then upload into App Inventor by choosing More Actions Upload Source on the Projects page. UNDERSTAND IT! Here is the user interface and components for the app: Here are the blocks for the app, with annotation: Sample App 2: Get the location w...

...otics kit and accompanying tutorials, we hope to make hardware programming more accessible. The Kit For sensors, the kit includes one light sensor, some photoresistors, and two ultrasonic sensors. These should suffice for a variety of applications, such as light-following and wall-following. Here...

...rangement, components are arranged in a grid of rows and columns, with not more than one component visible in each cell. If multiple components occupy the same cell, only the last one will be visible. Avoid inadvertently placing several components in a single cell. Within each row, components are v...

.... Here’s an example. Unfortunately, the example below does not work anymore, because Underground Weather is discontinued. As an alternative, Openweathermap could be used: https://openweathermap.org/. Weather Underground’s Weather API is a free service that you can query for weather informatio...

...entor extensions to implement multitouch: Scale Detector, which contains a more detailed explanation of the technique. It would be useful to work through that example first, before building the Rotation Detector. A demo app that uses the RotationDetector extension component The Rotation d...

...entor extensions to implement multitouch: Scale Detector, which contains a more detailed explanation of the technique. It would be useful to work through that example first, before building the Rotation Detector. A demo app that uses the RotationDetector extension component The Rotation d...

...entor extensions to implement multitouch: Scale Detector, which contains a more detailed explanation of the technique. It would be useful to work through that example first, before building the Rotation Detector. A demo app that uses the RotationDetector extension component The Rotation d...

...entor extensions to implement multitouch: Scale Detector, which contains a more detailed explanation of the technique. It would be useful to work through that example first, before building the Rotation Detector. A demo app that uses the RotationDetector extension component The Rotation d...