The iOS App Group Container is a protected folder for sharing content with trusted apps. The most common use it to exchange information between the main App and a shared extension.
Questions tagged [ios-app-group]
232 questions
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iOS: Share settings across different apps on different devices
My goal: Synchronize settings between two different of my apps on two different devices of the user.
From what I can tell, I can
use App Groups to share settings between different apps on the same device or
use iCloud to share settings of the same…

Frank Rupprecht
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How to draw lines on UIImage with swift ?
I am new to swift. I have followed many tutorial to learn it. Can someone guide me how to draw lines with UIImage ? I want to draw some lines on image .
If I draw image on UIView in on draw method - will the performance will be same as image on…

Deb S
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Is NSUserDefault secured to store app group data?
I have two apps, (AppA and AppB). I want to save data in AppA and access it in AppB using App Group:
Code in App A:
- (IBAction)btnSetValuePressed:(id)sender {
NSUserDefaults *myDefaults = [[NSUserDefaults alloc]…

user1872384
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Share common container between iPhone and Apple Watch
I am trying to share common data between my iPhone app and its extension app on Apple watch. Like the following:
//set
NSUserDefaults *groupDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.com.appName"];
[groupDefaults…

shebelaw
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iOS 9 ShareData between AppGroup through NSUserDefaults
I'm trying to add TodayExtension to my existing app and I want that app and extension will share data through NSUserDefaults.
According to this tutorial http://www.glimsoft.com/06/28/ios-8-today-extension-tutorial/
I did like it say:
Create new…

Błażej
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iOS8 today extension install error
I install my App with today extension, then add the extension, then I uninstall the app and reinstall it. The today extension get empty data from app group or the plist in main bundle,it is a iOS bug?
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iOS App groups - shared CoreData fails to open
I have an app with a CoreData database and access it using UIManagedDocument.
To share the data with the Watchkit app, I'm moving the database to a shared App Group.
The store is created correctly it seems, but after that it often becomes impossible…

Tiago Lira
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How do I update my app on app store?Keep getting Payload error
I have gone through the entire application process and it is definitely very tiring and hectic. I keep getting "Invalid .ipa , the app must be in payload" error. I exhausted all the possible solutions for the fix to no avail, tried changing…
user2386226
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Share Facebook session between main target and app (share) extension
I'm trying to develop a share extension that uses Facebook SDK to post status updates to user's wall.
The problem: user is already logged in on the main app but when I run the share extension target, Facebook access token becomes nil (not…

schystz
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setting up stickiness for sharepoint site on F5 load balancer
I have an iphone app based on sharepoint REST API CRUD operations. To do these operations, I get a fed auth cookie in the app launch using a custom login (sharepoint page) and thereafter all interactions are done using REST API calls. The problem we…

chand
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Update Core Data Stack into applicationWillEnterForeground
I’ve shared the same .sqilte between two apps with App groups.
When I add a recording in App A and open App B (first launch), app B retrieve correctly data.
I would like synchronize data when I add a recording in App A and app B (already launched in…

Hobbes
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1 answer
WatchKit Use App Groups To Store Data
I am working on my app to get ready for Apple Watch. I use Parse in my app, and instead of allowing user to try and login with their watch, I just want it to use the PFUser data from the iPhone. If they're logged in, it detects the PFUser the…

user717452
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Moving data to shared group in already launched app
My app is already on the App Store, but now I'm creating an Apple Watch Extension which also means storing data in a Shared Group.
How do I go about moving the data from where it's currently stored (Core Data & UserDefaults) for the customers that…

Aleksander
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iOS Programming, Xcode 6.1.1. Error: Data file 'library.a-x86_64.fin' does not exist. Finalizing - Failed
I am using third party library files which contains .h, static library (.a), .fin, .key files. The readme says:
1) .fin, .key & .a files should be present on same location.
2) Add flags "-finalize -prefinalized-library library_name.a" in "Other…

Manu Sharma
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2 answers
Storing bool in shared NSUserDefaults always returns false
I've set up App Groups for my app so that I can access the same NSUserDefaults in the app and in my keyboard extension. I have a problem though. I can successfully write a boolean to the defaults but when I access it in the keyboard, it always…

Jordan H
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