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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...
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
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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...
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 ?
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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
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Differences between Intent and PendingIntent
...ge from one component to another component either inside or outside of the application. Intents can communicate messages among any of the three core components of an application -- Activities, Services, and BroadcastReceivers.
The intent itself, an Intent object, is a passive data structure. It hol...
How do I prevent the iPhone screen from dimming or turning off while my application is running?
I'm working on an app that requires no user input, but I don't want the iPhone to enter the power saving mode.
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psql: FATAL: role “postgres” does not exist
...R;
CREATE DATABASE postgres WITH OWNER postgres;
But since your postgres.app setup does not seem to do this, you also should not. Simple adapt the tutorial.
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Accessing the logged-in user in a template
... requesting anything in the controller. The user is accessible like that : app.user.
Now, you can access every property of the user. For example, you can access the username like that : app.user.username.
Warning, if the user is not logged, the app.user is null.
If you want to check if the user ...