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How to add a custom button state

..., but needs a little correction: in the selector, the item states need an "app:" prefix, otherwise the inflater won't recognise the namespace correctly, and will fail silently; at least this is what happens to me. Allow me to report here the whole solution, with some more details: First, create fi...
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Android 4.3 menu item showAsAction=“always” ignored

I'm using the new v7 appcompat library available starting from Android 4.3 (API level 18). 12 Answers ...
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How to put Google Maps V2 on a Fragment using ViewPager

...ely try { MapsInitializer.initialize(getActivity().getApplicationContext()); } catch (Exception e) { e.printStackTrace(); } mMapView.getMapAsync(new OnMapReadyCallback() { @Override public void onMapReady(GoogleMap mMa...
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How to manage local vs production settings in Django?

... This approach means you have unversioned code running in development and production. And every developer has a different code base.I call anti-pattern here. – pydanny Jan 31 '13 at 16:25 ...
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How to use my view helpers in my ActionMailer views?

I want to use the methods I defined in app/helpers/annotations_helper.rb in my ReportMailer views ( app/views/report_mailer/usage_report.text.html.erb ). How do I do this? ...
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Arduino101(Genuino 101)&App Inventor – RGB LED控制 - 创客硬件开...

...點的 RGB 參數之後透過 BLE 送給 Arduino 101 來點亮 RGB LED。 App InventorDesigner使用 Canvas 來取得觸碰點座標。兩個連線斷線用的按鈕:Btn_Connect /  Btn_DisConnect三個用來呈現RGB值的 Slider (無法拖動)BletoothLE:處理BLE通訊Clock:定期...
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Difference between Activity and FragmentActivity

...when I changed Activity with FragmentActivity , it had no effect on the app. 2 Answers ...
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Apache and Node.js on the Same Server

... Great question! There are many websites and free web apps implemented in PHP that run on Apache, lots of people use it so you can mash up something pretty easy and besides, its a no-brainer way of serving static content. Node is fast, powerful, elegant, and a sexy tool with the...
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adb update a non-market apk?

... the database and stored preferences. If you uninstall/re-install both the app database and preferences is deleted. What exactly are you trying to update about the app that -r option does not help you with ? share |...
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Differences between socket.io and websockets

...t attaches ID's to clients on server side, and more. So it is not just a wrapper, it is full-featured library. In fact it hasn't been supported well in recent years, so I would recommend to use SockJS which is way better and more maintained alternative to Socket.IO. – moka ...