I am developing a application to test whether the iphone screen is OFF or ON and i tried the code of accelerometer that specified in stack overflow it working well for screen on status but when i turn off the screen the accelerometer is not deactivating.
So i am getting doubt about the fact that did really accelerometer get deactivate automatically when the screen turns off. If anybody having clear idea about it please share it.
Thanks
Application are paused when it sleep. You should realize a background task for it.
https://developer.apple.com/library/ios/DOCUMENTATION/iPhone/Conceptual/iPhoneOSProgrammingGuide/ManagingYourApplicationsFlow/ManagingYourApplicationsFlow.html#//apple_ref/doc/uid/TP40007072-CH4-SW20
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So I am developing an app on Intel XDK. This app requires the screen orientation to stay on portrait no matter what way the device is being held. I have googled this many times and nothing has come up for apps. If you could please show me how to do this that would be greatly appreciated. Thanks.
use setRotateOrientation method or alternatively use the cordova-plugin-screen-orientation-master
intel.xdk.device.setRotateOrientation("portrait");
is it possible to determine how many times my iPhone has been locked and unlocked programmatically when app is foreground and background as well. Code snippet will help a lot...
There's no way to get this information from your App.
You can only know when your app goes to foreground/background via your App Delegate, but not what the user does outside of your App.
I'm working on a proof of concept app. I'm using Xamarin for iOS. The iPhone app runs in the background and watches for particular BTLE devices and speaks using TTS when the signal is at a certain strength. I have TTS working and I can recognize the BTLE devices when the app is in the foreground.
However, I'm having trouble getting either working when the iPhone screen is off. In Android, I'd just use a wake lock, but that appears to not be available in iOS. I tried setting the background modes in the info.plist file for BTLE and sound, but I don't see any processing happen while the unit is suspended. Can anyone point me in the right direction?
This is just a proof of concept, so I'm only looking at the latest iOS version and I'm interested in even hacky answers.
Thanks!
You will need to create at least one background task UIApplication.SharedApplication.BeginBackgroundTask and end it with EndBackgroundTask when you finish transferring your data.
Note that you will have approximately 10 minutes in background. If user switch back to the app the time will be reset.
You might also want to disable application idle timer to prevent the screen to go black when the user doesnt touch it.
So I have seen this for quite a while now but I still wonder why this happens. When your app is in landscape mode and you rotate your phone or simulator on to the other landscape side it appears as if the status bar is clearly rotating twice. If you don't see this at first try activating slow animatons (⌘T on the simulator). I can see it happening on my iPhone as well.
Does anyone know why this is happening?
That's nothing but a common iOS Simulator lag. It happens just because of the slow animation mode and you could even send a Bug Report to Apple, but that's nothing but a Simulator lag. Don't worry: This issue will never happen in a recent iOS device. Happy programming!
EDIT: Apparently you want deep details. Ok. If your app's rotation animations are faster than iOS standard animations, this should happen because the system probably notices that the app's rotation is not near ready and returns for keeping up the pace. For deep details and possibilities to change these details on the Info.plist file, please look on the iOS Library.
Best regards,
Is there any way to detect the shake when the application is in back ground in iOS ? Actually in my application i need access my application when the device is in lock screen to call some web services. Is there any way to do this to aces my application while the device is in lock screen in iOS?
Simple answer NO there is no way of detecting shake in background mode sorry.
Unfortunately this isn't possible in iOS 7 are lower.