I have been working in corelocation framework to fetch current location i'm getting location when my app in foreground state.
Now my question is when my app goes to suspend state/background state i want to get the current location for every 'n' minutes.This condition was not satisfied so please help me here i'm struggling lot here..
Thanks in Advance.
You should register your app for background location updates by adding location to the UIBackgroundModes key in your app's Info.plist file (see docs).
iOS will send your app location updates is it thinks it is necessary. When your app is in the background, you can't execute functions that poll for location every n minutes.
Related
I want to get location updates of the user in a regular interval of time even if the app is not running in foreground.
In most of the articles i have read, they said that the OS will forcefully stop or suspend the background service the app have started.
What i need is the app should regularly check the user location and when that location becomes greater than say 10Kms the app should trigger a local notification.
We were able to do the functionality correctly when the app is ran again by the user. But it wont work in background. And if we inegrated it as a background service , then it is causing the app to crash. :(
this part caught my attention after a long time of search
https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/LocationAwarenessPG/CoreLocation/CoreLocation.html#//apple_ref/doc/uid/TP40009497-CH2-SW8
As far as I understood, they say that the OS will wakeup the app to get the current location when it senses a change in location.
But I didnt get any helping tutorial to accomplish the same
These are the tutorials which I refered
Periodic iOS background location updates
How do I get a background location update every n minutes in my iOS application?
Getting user location every n minutes after app goes to background
iOS Not the typical background location tracking timer issue
iOS long-running background timer with "location" background mode
What i need is preferably a background service or something which does the job done which check of the current location calculate distance and makes a local notification.
But as far as i know all the background services will be suspended or killed by the OS within some time after the app is gone in background.
Please guys I am desperate, Its been 2 weeks i am on in its tail.
Building the same for Android was a piece of cake actually.
Any help ???
You can get background location updates easily, you need to enable "Location updates" under "Background Modes" section in capabilities.
You also need to request for Always Authorisation and finally add this
if #available(iOS 9.0, *) {
locationManager.allowsBackgroundLocationUpdates = true
}
Make sure "Location updates" is activated else the above code will lead to a crash.
Also, write the CLLocationManager Delegate Methods in your AppDelegate class as this would increases chances of those methods being called as mentioned on Raywenderlich Background Location tutorial
I'm making an app where I am showing the User's distance from other users. I'm able to update user locations when app is open and when app is in background HOWEVER I can not figure out how to update the location when app is terminated. I have been told that this is not possible but I believe it is possible because Life 360, Facebook, etc update the location in terminated state. Any help on how to achieve this is greatly appreciated!
To do this you need to use:
myLocationManager.startMonitoringSignificantLocationChanges()
From the docs:
"If you start this service and your app is subsequently terminated, the system automatically relaunches the app into the background if a new event arrives."
Unfortunately from extensive testing the significant changes when they start to come through are very inaccurate so you may wish to switch on normal location updates at the point you receive a significant location change in the background.
myLocationManager.startUpdatingLocation()
I am implementing an App with continuous background updates on iOS 9. Even with allowsBackgroundUpdates set to YES, AlwaysUsage Description and with proper authorisation i am not getting location updates continuously. I am using Standard Location Services and Significant Location Services but not receiving any location updates when App is in Background. (App is in background/suspended but not terminated). Can anyone let me know if i have missed anything? Thanks in advance.
If your iOS app must keep monitoring location even while it’s in the background, use the standard location service and specify the location value of the UIBackgroundModes key to continue running in the background and receiving location updates. (In this situation, you should also make sure the location manager’s pausesLocationUpdatesAutomatically property is set to YES to help conserve power.) Examples of apps that might need this type of location updating are fitness or turn-by-turn navigation apps
I've an use case where i need to start location updates once I detected region entry. I've tried all possible options available in location programming.
From my experience, i was able to get the deferred location updates working when i launch the app and put it in the background, it wont start deferring location updates automatically when the app is launched in the background due to region entry. Same is with both the standard and significant location update options.
Can someone help me or provide me any references that help me initiate location updates when app is launched in the background due to some events like region entry or silent remote notification?
Any help is truly appreciated.
Thanks.
Following are some links ,i hope it will help you:
How do I get a background location update every n minutes in my iOS application?
Getting user location every n minutes after app goes to background
iOS Not the typical background location tracking timer issue
iOS long-running background timer with "location" background mode
iOS full-time background-service based on location tracking
Check this link for iOS 7:
Start Location Manager in iOS 7 from background task
I am creating an application that sends updated location to server regardless of app state. I have tried silent push to wake my application in background but it didnt work (it works fine except if my app is killed by user from app switcher). I am using location manager for getting current location.
Does IOS7 provides this feature to launch your application in background (even if app is killed by user from app switcher)??
I have spent five days without any success on this. If anyone can help me that would be highly appreciable.
Thanks in advance!!
If you need precise GPS locations you can set add the "location" value to the UIBackgroundModes array in your Info.plist as described in "UIBackgroundModes location and significant location changes with region monitoring". If you need only approximate locations you can use the startMonitoringSignificantLocationChanges method of CLLocationManager. As it is written in the documentation: "If you start this service and your application is subsequently terminated, the system automatically relaunches the application into the background if a new event arrives."
You can wake your app by using significantlocationchange.
You have to start significant location change while you switch your app to background.
Then system will wake your app after significant location change.
The frequency is not faster than 5 min and for every 500 meters.
You will have to catch the event by checking for LocationKey in didFinishLaunchingWithOptions in projects AppDelegate.