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AccessibilityTools 无障碍工具扩展：执行返回、主页和最近任务等操作 · A...
...展
大家好。今天我向这个优秀社区介绍我的另一个贡献：一个非常小但非常有用的扩展：Accessibility Tools。
组件名：AccessibilityTool
包名：aryan.gupta.BackButton.AccessibilityTool
版本：1
作者：Aryan Gupta（AryanGupta）
发布时间...
App Inventor 2 CirculBar 扩展：在图像组件上绘制自定义圆形进度条 · App Inventor 2 中文网
...,字体大小,背景颜色)
在指定的 Image（图像）组件上绘制一个圆形进度条。
参数说明：
参数
类型
说明
图像组件
component
要绘制圆形进度...
App Inventor 2 MultiImagePicker 拓展：实现图片/视频多选功能 - App Inve...
...点击左下角 Extension 导入拓展
第二步：设计界面
添加一个按钮和 MultiImagePicker 组件，再加一个 Label 用来显示选中的图片路径。
第三步：编写逻辑
多选示例（选择最多5张图片）：
当 Button1.被点击：
- 调用 MultiImageP...
运动软件设计问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
本帖最后由 wwwwwwwwwwww 于 2026-07-03 10:55 编辑
我要做一个运动软件，里面有一个轨迹图功能，我应该怎么做出来？需要用什么组件？而且我需要怎么处理运动距离过远的时候缩放和自动保存？
地图相关组件，画线组件，地图本...
编译不成功是什么原因？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...传一下 aia，这样定位更快哦～
请指教，谢谢！我就是做一个非常简单的程序也是有这个错误，程序中只有一个按键，除此之外什么都没有，用模拟器可以运行，用AI伴铝也能运行，但编译为 “安卓应用程序(.apk)”时就会出现错...
vagrant up failed, /dev/vboxnetctl: no such file or directory
...
I'm running macOS High Sierra 10.13.1 and VirtualBox 5.2.2.
This worked for me:
Grant permission to VirtualBox under System Preferences > Security & Privacy > General (this request is new to macOS High Sierra)
Open Terminal and r...
What is “android.R.layout.simple_list_item_1”?
...a reference to an built-in XML layout document that is part of the Android OS, rather than one of your own XML layouts.
Here is a further list of layouts that you can use:
http://developer.android.com/reference/android/R.layout.html
(Updated link thanks @Estel: https://github.com/android/platform_...
npm global path prefix
...houldn't have to do it.
Run this:
npm config get prefix
The default on OS X is /usr/local, which means that npm will symlink binaries into /usr/local/bin, which should already be on your PATH (especially if you're using Homebrew).
So:
npm config set prefix /usr/local if it's something else, a...
What can you use Python generator functions for?
I'm starting to learn Python and I've come across generator functions, those that have a yield statement in them. I want to know what types of problems that these functions are really good at solving.
...
Increasing (or decreasing) the memory available to R processes
...acity.
You may also set the amount of
available memory manually. Close R,
then right-click on your R program
icon (the icon on your desktop or in
your programs directory). Select
``Properties'', and then select the
``Shortcut'' tab. Look for the
``Target'' field and after the clo...