I've developed Android app which has a background service in the sleep mode. This service works with accelerometer data and can launch the app from the sleep mode over the lock screen.
Is it possible to make the same on iOS?
I mean:
Create a service which can work in background with accelerometer data.
Service can launch the app when the phone is in the sleep mode over lock screen. (without unlocking)
If I'm not mistaken it must be possible on iOS7, isn't it?
Thanks!
Yes – Apple publicly stated background processing at WWDC keynote and it can be done to a degree on iOS6
No – Apple will 'probably' never allow an app to be opened without the user instigating it and certainly not over the lock screen.
You could use Push / Local Notifications which do appear on the lock screen to try and entice a user at a specific time to launch the app but no guarantees.
Related
I want to use an old iPad to view an ip camera feed. Instead of keeping the iPad on all day, I want to be able to tell the iPad to wake and open the camera viewer application when the camera senses motion. (Not just a small notification on lock screen, I want to be able to view a full screen image of the cameras feed). After a given period of time the iPad would go back to an off/sleep mode. Is this even possible in iOS? Thanks!
Take a look at the "Singe App Mode" and "Background Execution". Choose an event type that can take your device out from background mode, like VOIP. Do not expect the app to be accepted in the public app store.
For my current project, I need to calculate the total time while an iOS device is unlocked i.e. the user is working on his device. I am aware of the Darwin Notifications as available in CFNotificationCenter as specified in this Stackoverflow question. I have tested this code on my iPhone 5C. It is woking fine for foreground mode. But I am not able to receive those notification when the application is in background mode. Is it possible to receive those notification in background mode? Or is there any other way to calculate total unlocked time for a device from my app even when the application is in background mode?
As explained here. Background mode can only be used for specific purposes. If your App is not using background mode for any of those purposes (which it isn't), it will not work.
In short, it could only work on a jailbroken device.
Want to put the icon for our iOS app on the iOS Notifications Screen that can be accessed when a user has not entered their passcode, so that the user can launch the app when the phone is locked without needing to input their passcode. The goal is for a very fast launch with minimum time from a locked iphone. We don't need to actually send the user a notification. Would also be great for this to work on Android, but iOS is currently more important for this feature.
What is the best way to do this using Cordova? Is there an existing plugin for this purpose?
Thanks
It is not possible to launch an iOS app without unlocking the phone/device. The notifications screen is only available once the iOS device is unlocked.
(thanks to dan)
Is there any way to bring iPhone application into the foreground by pressing a button in the Apple watch
any way other than handoffs!
No, it is not currently possible. WatchConnectivity just serves to exchange data between the two devices, not for changing their statuses.
Of course you may activate a local notification from the watch on the iPhone upon clicking which the coupled application goes to the foreground, but it shall still require an action by the user on the iPhone.
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.