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App inventor可以在不开发拓展的情况下实现实时定位与导航吗？ - App应用开...
想开发一个出行类的app，想要实现图片中的功能，在app inventor里能实现吗，或者有什么好的建议吗
原生地图组件可以实现，不过国内访问稳定性不保证：https://bbs.tsingfun.com/thread-1786-1-1.html
高德地图API也可以实现电子围栏功能...
Programmatically set the initial view controller using Storyboards
...iew Controller" attribute from the first view controller.
If you run your app at this point you'll read:
Failed to instantiate the default view controller for UIMainStoryboardFile 'MainStoryboard' - perhaps the designated entry point is not set?
And you'll notice that your window property in the...
Detect if Android device has Internet connection
... you can just take a different website (e.g. baidu.com when deploying your app in China), or you can try a second site if the first one fails to make sure there is no connection.
– THelper
Mar 29 '12 at 11:10
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Trying to start a service on boot on Android
...ndroid:name="android.permission.RECEIVE_BOOT_COMPLETED" />
In your <application> element (be sure to use a fully-qualified [or relative] class name for your BroadcastReceiver):
<receiver android:name="com.example.MyBroadcastReceiver">
<intent-filter>
<action...
Difference between ActionBarSherlock and ActionBar Compatibility
...
ActionBarSherlock gives your application an action bar regardless* of what version of the android API your app is being run on. Action Bar Compatibility gives you the action bar only if the device that you're running on is API level 3.0 or above.
*Note ...
How to change background color in android app
I want to be able to change the background color to white in my android app in the simplest way possible.
19 Answers
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Which websocket library to use with Node.js? [closed]
...you have no idea about what to use, are not in the mood for rewriting your application when you need to switch frameworks because of changing project requirements or need additional connection stability.
Where to test:
Firecamp is a GUI testing environment for SocketIO, WS and all major real-time...
Should everything really be a bundle in Symfony 2.x?
... for services,
src/Vendor/Bundle — for bundles, like src/Vendor/Bundle/AppBundle,
etc.
This way, you would put in the AppBundle only that stuff that is really Symfony2 specific. If you decide to switch to another framework later, you would get rid of the Bundle namespace and replace it with the c...
include external .js file in node.js app
I have an app.js node application. As this file is starting to grow, I would like to move some part of the code in some other files that I would "require" or "include" in the app.js file.
...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
... find a good solution to this problem. In a view controller's -viewWillDisappear: method, I need to find a way to determine whether it is because a view controller is being pushed onto the navigation controller's stack, or whether it is because the view controller is disappearing because it has be...