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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...
【转】App Inventor 2 项目中批量添加或删除文件 - App应用开发 - 清泛IT社...
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下图中的18个文件是需要上传的：
如果在App Inventor里操作，需要一个个删除，一个个上传，非常浪费时间。我们可以使用迂回的方法将批量处理需要删除和下载的文件。首先在App Inventor中通过菜单“项目”→“导...
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
MIT官方已升级至2.71版本，几乎就是仅增加一个全新主题 - App Inventor 2 ...
...n versions 2.71 (from Google Play) and 2.71u (directly downloaded from MIT App Inventor).
Features:
New user interface. Go to Settings > User Interface Settings > Neo to try it out
ChatBot component adds a new block, ConverseWithImage to ask questions about images (API key needs payment...
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...
How to remove padding around buttons in Android?
In my Android app, I have this layout:
17 Answers
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How to Set a Custom Font in the ActionBar Title?
...do this using a custom TypefaceSpan class. It's superior to the customView approach indicated above because it doesn't break when using other Action Bar elements like expanding action views.
The use of such a class would look something like this:
SpannableString s = new SpannableString("My Title")...
Xcode 5 - “iOS Simulator failed to install application” every time I switch simulators
...r 6.1 simulators to test, I get the error "iOS Simulator failed to install application." When I reset the simulator it works, but this is getting very tiring.
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...种流畅的帧率规定为60fps。
有了上面的背景，我们开发App的帧率性能目标就是保持在60fps，也就是说我们在进行App性能优化时心中要有如下准则：
换算关系：60帧/秒-----------16ms/帧；
准则：尽量保证每次在16ms内处理完所有的...
How to define custom configuration variables in rails
I was wondering how to add custom configuration variables to a rails application and how to access them in the controller, for e.g I wanna be able to define an upload_directory in the configuration files say development.rb and be able to access it in one of my controllers.
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