Get child of dictionary with unknown parent key - swift

Question

I have a dictionary from type [String: Any] that looks like this
"arExtensions" : {
"images" : {
"-LmgO2yG_TWbfOM4Y8X3" : {
"imagePath" : "https://firebasestorage.googleapis.com/v0/b/gpk-citycards.appspot.com/o/ARResources%2F78E88F6D-52F0-43A3-B585-9760D19F0B81?alt=media&token=be3a664f-a94b-4ead-bea4-1197155c016e",
"position" : "bottom"
},
"-LmgO4qaMKupHZIAEoLk" : {
"imagePath" : "https://firebasestorage.googleapis.com/v0/b/gpk-citycards.appspot.com/o/ARResources%2FC7303CF9-0E86-4DC6-A5F5-2761537F0A30?alt=media&token=1f928774-8221-474b-881e-7f395e439131",
"position" : "rightMiddle"
},
"-LmgO9vLT8rEx9Ndog4S" : {
"imagePath" : "https://firebasestorage.googleapis.com/v0/b/gpk-citycards.appspot.com/o/ARResources%2F9132B5B6-E904-4BCE-B56A-0271CB901A7D?alt=media&token=bd66cd1d-494b-4a82-8d74-6e00ac8c8ae6",
"position" : "leftMiddle"
}
}
}
I want to add the images into an object.
var imageObjects: [ImageObject] = []
I know that I can get the values with the keys like this
let dictImages: [String: Any] = dictArExtensions["images"] as! [String : Any]
unfortunately I don't know the key of the children of images.
with two iteration, first to get the key, second to get the needed values i solved the problem like this
var imageKeys: [String] = []
for dict in dictImages{
print(dict.key)
imageKeys.append(dict.key)
print(dict.value)
}
for keys in imageKeys{
let dictImage: [String: Any] = dictImages[keys] as! [String : Any]
let imagePath = dictImage["imagePath"] as? String
let position = dictImage["position"] as? String
imageObjects.append(ImageObject(imagePath: imagePath!, position: position!))
}
but, it seems like a bad solution.
Is there a better or rather more professional solution to this?

Answer 1

You can enumerate the dictionary very simply with key and value but the key is actually unused.
And if you declare the child dictionary as [String:String] you can get rid of the type cast
for (_, value) in dictImages {
let dictImage = value as! [String:String]
let imagePath = dictImage["imagePath"]
let position = dictImage["position"]
imageObjects.append(ImageObject(imagePath: imagePath!, position: position!))
}
Please read the section about dictionaries in the Language Guide