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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
...扫描后直接连接即可通信。
蓝牙App开发示例
demo参考界面如下：
扫描蓝牙设备，代码如下：
扫描完成后，设备列表展示到“列表显示框”组件中：
点击列表中的目标设备（一般硬件文档会有说明，名称会有特别的标...
list every font a user's browser can display
... to hardcode this list ahead of time or send it down from the server. (Intuitively, it seems like the browser should know what fonts it has and this should be exposed to javascript somehow.)
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How to draw rounded rectangle in Android UI?
I need to draw a rounded rectangle in the Android UI. Having the same rounded rectangle for TextView and EditText would also be helpful.
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Yellow fade effect with JQuery
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I saw the demo in the jquery site docs.jquery.com/UI/Effects/Highlight#overview I have tried in my code but does not do anything. Do I need to download any extra. It says dependencies: Effects Core. It is this another plugin.
– Sergio del Amo
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Comparison between Corona, Phonegap, Titanium
...d image file. When the application runs, these resources are loaded into a UIWebView control and run there (as javascript, not native bits, of course). There is no such thing as a javascript-to-native-code (or to-objective-c) compiler. This is done the same way in PhoneGap as well. From architectura...
Accessing UI (Main) Thread safely in WPF
... use
Dispatcher.Invoke(Delegate, object[])
on the Application's (or any UIElement's) dispatcher.
You can use it for example like this:
Application.Current.Dispatcher.Invoke(new Action(() => { /* Your code here */ }));
or
someControl.Dispatcher.Invoke(new Action(() => { /* Your code ...
Asynctask vs Thread in android
In UI, to perform some background work, I used a separate Thread . But as suggested by others, I am now using AsyncTask .
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What's the difference between Invoke() and BeginInvoke()
...es asynchronously, on a threadpool thread.
Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing.
Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion.
Tim's answer mentions when you might want to use BeginInv...
What to do about Eclipse's “No repository found containing: …” error messages?
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Quick answer
Go to Help → Install new software → Here uncheck “Contact all update sites during install to find required software”
Eclipse will prompt that the content isn't authorized or something like that. just ig...
Jquery date picker z-index issue
...ative.
Using this way you don't have to modify any javascript from jQuery UI.
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