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app inventor 2 如何返回上一步操作 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
app inventor 2 网页版，请问如果操作失误，如何返回上一步操作？根据你的描述无法get到你的具体场景，这里给出我能想到的所有场景供参考：
1、组件（界面设计）视图：误操作无法回退。 因此，要养成及时保存、导出的习惯...
请问 App Inventor 2 能不能做出很好看的界面？ - App应用开发 - 清泛IT社...
...一点点布局产生的，原生Android能开发出的界面，理论上App Inventor 2也能开发出来。
一般来说，如果原生组件布局的界面不能满足要求，那么可以采用图片元素来自定义布局：屏幕或布局组件背景使用图片，按钮背景使用图片，...
app inventor拍照的照片如何保存到手机相册？ - App Inventor 2 中文网 - ...
app inventor拍照的照片如何保存到手机相册？问：你好！小朋友在做APP时，调用照相机模块拍的照片要存到相册里，指定了图像位址，但还是实现不了，是什么原因呀？首先，这个照相机拍照完成事件中这个参数是图片的路径，是...
APP 可以接受蓝牙模块的反馈信息么 - App Inventor 2 中文网 - 清泛IT社区...
使用APP inventor 制作了一个控制蓝牙模块的APP 可不可以实现蓝牙模块反馈过来的信息 在APP上显示出来? 谢谢现成的解决方案，请参考这里：https://bbs.tsingfun.com/thread-1792-1-1.html谢谢, 谢谢及时回答
app inventor 2 怎么进行延迟操作？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
app inventor 2 怎么进行延迟操作？https://www.fun123.cn/reference/creative/sim_sleep.html
App Inventor 2 模拟sleep函数 App Inventor 2 原生没有 sleep 及相关函数，需要模拟实现，经过测试这里给出一个既简单又相对高效率的实现方案：需要用到计时...
Android Preferences: How to load the default values when the user hasn't used the preferences-screen
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Also, If your App has multiple entry points, place it in onCreate() of Application.
– S.D.
Jan 7 '13 at 12:02
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Using Excel OleDb to get sheet names IN SHEET ORDER
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Doesn't answer posters question (he wants it in order of appearance in Excel)
– Andrew White
Apr 25 '12 at 9:07
7
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Presenting a UIAlertController properly on an iPad using iOS 8
With iOS 8.0, Apple introduced UIAlertController to replace UIActionSheet . Unfortunately, Apple didn't add any information on how to present it. I found an entry about it on hayaGeek's blog, however, it doesn't seem to work on iPad. The view is totally misplaced:
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Activity has leaked ServiceConnection @438030a8 that was original
I'm working on my first Android app. I've got three activities in my app, and the user switches back and forth pretty frequently. I've also got a remote service, which handles a telnet connection. The apps need to bind to this service in order to send/receive telnet messages.
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Find unused code [closed]
I have to refactor a large C# application, and I found a lot of functions that are never used. How can I check for unused code, so I can remove all the unused functions?
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