Create Directory in App Group Container Swift

Create directory in app group container swift

containerURLForSecurityApplicationGroupIdentifier returns the URL to the group container.

To create a directory append the new directory name as path component

let fileManager = NSFileManager.defaultManager()
if let directory = fileManager.containerURLForSecurityApplicationGroupIdentifier("APP_GROUP_IDENTIFIER") {
    let newDirectory = directory.URLByAppendingPathComponent("MyDirectory")
    try? fileManager.createDirectoryAtURL(newDirectory, withIntermediateDirectories: false, attributes: nil)
}

Swift 3:

let fileManager = FileManager.default
if let directory = fileManager.containerURL(forSecurityApplicationGroupIdentifier: "APP_GROUP_IDENTIFIER") {
    let newDirectory = directory.appendingPathComponent("MyDirectory")
    try? fileManager.createDirectory(at: newDirectory, withIntermediateDirectories: false, attributes: nil)
}

how can I create and access share app group document directory?

Solved

  let fileManager = FileManager.default
                                        let url = fileManager.containerURL(forSecurityApplicationGroupIdentifier: "group.companyname.appname")?.appendingPathComponent("logo.png")

                                        // store image in group container
                                        if !fileManager.fileExists(atPath: url!.path) {

                                            let image =  UIImage(data: data)
                                            let imageData : Data = UIImagePNGRepresentation(image!) as! Data
                                            fileManager.createFile(atPath: url!.path as String, contents: imageData, attributes: nil)
                                        }

//ACCESS THIS or get store image 
 let Image1 = UIImage(contentsOfFile: (url?.path)!)! 

How is it possible to create directories inside your application directory in iOS?

You can try creating a folder inside the .documentDirectory like following.

do {
    let fileManager = FileManager.default
    let documentsDirectory = try fileManager.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
    let someFolderURL = documentsDirectory.appendingPathComponent("Some")
    try fileManager.createDirectory(at: someFolderURL, withIntermediateDirectories: true, attributes: nil)
    print(someFolderURL)
} catch {
    print(error)
}

Documents directory URL has this format -

"file:///var/mobile/Containers/Data/Application/FB12D808-9054-4799-9C69-115ACD805A24/Documents/"

how to assign an ios swift project to a specific App Group

View your target in Xcode (usually by clicking on the top level element in the project navigator)

Go to "Signing and Capabilities"

Click the "+ Capability" button.

Choose "App Groups"

Add the appropriate identifiers.

How to find Apple App Group shared directory

EDIT on 2018-10-12: Updated code for Swift 4.x (Xcode 10). (Older version retained for reference.)

In Swift 4.x:

let sharedContainerURL :URL? = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.etc.etc")
// replace "group.etc.etc" above with your App Group's identifier
NSLog("sharedContainerURL = \(String(describing: sharedContainerURL))")
if let sourceURL :URL = sharedContainerURL?.appendingPathComponent("store.sqlite") {
    if let destinationURL :URL = FileManager().urls(for: .documentDirectory, in: .userDomainMask).first?.appendingPathComponent("copyOfStore.sqlite") {
        try! FileManager().copyItem(at: sourceURL, to: destinationURL)
    }
}

In older version of Swift (probably Swift 2.x):

let sharedContainerURL :NSURL? = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("group.etc.etc")  // replace "group.etc.etc" with your App Group's identifier
NSLog("sharedContainerURL = \(sharedContainerURL)")
if let sourceURL :NSURL = sharedContainerURL?.URLByAppendingPathComponent("store.sqlite")
{
  if let destinationURL :NSURL = NSFileManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0].URLByAppendingPathComponent("copyOfStore.sqlite")
  {
    try! NSFileManager().copyItemAtURL(sourceURL, toURL: destinationURL)
  }
}

Something like the above will get a file from the app group's shared container to the app's Documents directory. From there, you could use Xcode > Window > Devices to get it to your computer.

You could also use iTunes file sharing to retrieve the file from the app's Documents directory after setting UIFileSharingEnabled to YES in the Info.plist file, but bear in mind that this will expose the directory's contents to the user as well. Should be okay for development/debugging purposes, though.

Access App Groups container directory from test runner

Actually, you can!

Simulator:
Write / duplicate your shared data to this location; it should be accessible to both the UITestRunner and your application. Remember to have a mechanism to ensure this does not make it to production code.

NSString * pathAsString = [NSProcessInfo processInfo].environment[@"SIMULATOR_SHARED_RESOURCES_DIRECTORY"];

Device:
Your UITestRunner should share the same Group Identifier as the app under test. Then you can access the shared resources folder. This does not work on Simulator because the UITestRunner is not signed for simulator targets, and it must be signed and part of the Shared Group in order to access the group.

NSURL *containerURL = [NSFileManager.defaultManager containerURLForSecurityApplicationGroupIdentifier:groupIdentifier];

Paulo Andrade has a nice blog post on how to do this:
https://pfandrade.me/blog/managing-ios-ui-testing-fixtures/

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