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App Inventor 2 组件参考文档 · App Inventor 2 中文网
...在于“界面设计”或“程序设计”中。
用户界面（UI）组件
界面布局组件
多媒体组件
绘画动画组件
地图组件
图表组件
数据科学
传感器组件
社交应用组件
数据存储组件
通信...
Plyr视频播放器拓展：全屏、画质、字幕、缩略图、强大的用户界面 - App Inv...
...即将推出。
来源：https://community.kodular.io/t/v ... taractive-ui/112735
开源：https://github.com/zainulhassan815/plyrio
AppInventor2可以接收VR眼镜的头传吗？ - App应用开发 - 清泛IT社区，为创新赋能！
...应用程序活动类（对于此演示，它是 com.appinventor.cardboard.ui.VirtualActivity）ActivityPackage 即 com.appinventor.cardboard
这是按下按钮时启动视图的事件处理程序。我们需要复制 obj 文件和纹理文件，使助手可以访问它们。请注意，我们不...
.yail 文件是什么格式的文件？如何生成的？ - App Inventor 2 中文网 - 清...
...包含的源码格式文件，简单理解就是：
.scm 是UI界面描述的源码。
.blk 是逻辑代码块描述的源码。
而 .yail 是上面两者经过编译后生成的更底层、更通用的源码格式文件，最终将.yail文件编译成apk。
.yail 源...
- App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
1、UUID 背后的理念是，由于空间非常大（2^128，比宇宙中原子的估计数量还要多），随机选择两个 UUID 来标识事物时几乎不可能产生碰撞。如果您知道要连接的服务/特性，那么将它们编码到应用程序中是有意义的。如果您正在开...
Remove border from buttons
... you bind the "click" event with a custom handler.
Frameworks like Jquery-UI or Bootstrap does this out of the box. Using one of them may ease a lot the whole application conception by the way.
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Infinity symbol with HTML
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∞
This does not require a HTML entity if you are using a modern encoding (such as UTF-8). And if you're not already, you probably should be.
share
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How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
...ch results controllers: one for the normal display and another one for the UISearchBar's table view.
If you only use one FRC (NSFetchedResultsController) then the original UITableView (not the search table view that is active while searching) will possibly have callbacks called while you are search...
Build fat static library (device + simulator) using Xcode and SDK 4+
It appears that we can - theoretically - build a single static library that includes both simulator and iPhone and iPad.
10...
ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
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Scott Dorman is correct. Calling the built-in Add method will trigger something like 3 events per add (a NotifyPropertyChange for item count, NotifyPropertyChange for item indexing[] and an NotifyCollectionChanged event for the item added). To get the best perfor...