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使用App Inventor扩展实现多点触控:Scale Detector 缩放检测 · App Inventor 2 中文网
... window.location.href = "../extensions/GestureDetector.html";
}, 500);
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构建扩展需要 App Inventor Extensions 功能,该功能尚未合并到 App Inventor 版本中。 但是你可以使用我们的扩展测试服务器尝试下面描述的一些步骤:
演示...
Retrieving parameters from a URL
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Pikamander2
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answered Feb 22 '11 at 7:54
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How to get current language code with Swift?
...ale?'
– Puji Wahono
Jul 4 '19 at 7:40
2
As far as I notice, it will return actual language set in...
Asp.net - Add blank item at top of dropdownlist
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Write a number with two decimal places SQL server
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组件使用指导 · App Inventor 2 中文网
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多点触控(MultiTouch):多点触控:同时追踪最多 10 个触摸点(按下、移动、松开,带触摸点序号和坐标),并识别滑动、双击、长按、双指缩放、双指旋转
传感器
生物识别(Biometric):生物识别...
Slowing speed of Viewpager controller in android
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Changing element style attribute dynamically using JavaScript
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SensorUtil 传感器工具扩展:在后台和屏幕关闭时保持传感器工作 · App Inv...
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1.0
2025-10-09
初始版本
工作原理
前台服务
Android 限制后台应用的活动以节省电池。要在后台持续运行,应用必须启动前...
Better way to check if a Path is a File or a Directory?
...a directory");
else
MessageBox.Show("Its a file");
Update for .NET 4.0+
Per the comments below, if you are on .NET 4.0 or later (and maximum performance is not critical) you can write the code in a cleaner way:
// get the file attributes for file or directory
FileAttributes attr = File.GetAt...
