Q：App Inventor 输入文本如何转成ASCII码？ A：使用AsciiConversion 拓展可以轻松实现。 AsciiCode: 给出字符，返回它相应的 Ascii码。 用法示例：返回字符“A”的Ascii码，结果将是：65。

报错如下：PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value [D:\APPinventor\AppInventor2\resources\app.asar.unpacked\Emulator\from-Android-SDK]!

Q：APP Inventor 空字符串怎么表示？ A：文本下的字符串，不填写任何内容，就是空字符串。 详见文档：https://www.fun123.cn/reference/blocks/text.html#string

Q：如何设置App不随着屏幕旋转而旋转？ A：Screen1 的属性中设置屏幕方向为“锁定竖屏”就可以啦！ 学习到了！！

We distribute apps via an Enterprise account, using an itms-services:// URL. This has always worked fine, but after installing the iOS 7.1 beta on our iPad it refuses to install. Instead we just get the generic Cannot connect to example.com message that iOS unhelpfully displays when there is any...

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I'm writing an iPhone app. It's already been published, but I would like to add a feature where its version number is displayed. ...

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...s is the section from the CLLocationManager documentation describing the app behavior with startMonitoringSignificantLocationChanges : ...