Get Image location from UIImagePickerController - ios

Question

I have tried multiple ways to get the location of an image which took through the UIImagePickerController Camera.
What I want to achieve is that, I want to select an image using UIImagePickerController Camera and I have to save it into Photo Library so that only I can take back the PHAsset from it and also the location associated with it.
//MARK: Saving an Image to PhotoLibrary and taking back the PHAsset
class func savingThis(image : UIImage, completion : (asset : PHAsset?) -> ())
{
var localIdentifier : String?
let imageManager = PHPhotoLibrary.sharedPhotoLibrary()
imageManager.performChanges({ () -> Void in
let request = PHAssetChangeRequest.creationRequestForAssetFromImage(image)
if let properAsset = request.placeholderForCreatedAsset {
localIdentifier = properAsset.localIdentifier
}
else {
completion(asset: nil)
}
}, completionHandler: { (success, error) -> Void in
if let properLocalIdentifier = localIdentifier {
let result = PHAsset.fetchAssetsWithLocalIdentifiers([properLocalIdentifier], options: nil)
if result.count > 0 {
completion(asset: result[0] as? PHAsset)
}
else {
completion(asset: nil)
}
}
else {
completion(asset: nil)
}
})
}
I have tried this code, to save and get back the PHAsset. But the problem is that this PHAsset does not have any location associated with it, wondering why? And what I missed?
I believe that I don't have to manually set GPS data into image's metadata right? I think that Photos Framework or Asset Library takes care of it. So as you know that Asset Library is deprecated our only option is to use Photos Framework. I read online that, Saving image to Photo Library takes care of it. Isn't it correct?
Is there any alternative? Should I use UIImageWriteToSavedPhotosAlbum method to save image to Camera Roll, And I can take back the very recent photo using Photos Framework. But I don't think that UIImageWriteToSavedPhotosAlbum will take care of the location thing.
Do you have any thoughts?

Answer 1

First of all thanking all who were all kind to take a look into the question.
I found my answer.
//MARK: Saving an Image to PhotoLibrary and taking back the PHAsset
class func savingThis(image : UIImage, completion : (asset : PHAsset?) -> ())
{
var localIdentifier : String?
let imageManager = PHPhotoLibrary.sharedPhotoLibrary()
imageManager.performChanges({ () -> Void in
let request = PHAssetChangeRequest.creationRequestForAssetFromImage(image)
request.location = // Assigned current location here :)
if let properAsset = request.placeholderForCreatedAsset {
localIdentifier = properAsset.localIdentifier
}
else {
completion(asset: nil)
}
}, completionHandler: { (success, error) -> Void in
if let properLocalIdentifier = localIdentifier {
let result = PHAsset.fetchAssetsWithLocalIdentifiers([properLocalIdentifier], options: nil)
if result.count > 0 {
completion(asset: let asset = result[0] as? PHAsset)
}
else {
completion(asset: nil)
}
}
else {
completion(asset: nil)
}
})
}

Answer 2

When you get a callback from UIImagePickerController:
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo
info: [UIImagePickerController.InfoKey : Any]) {}
you can try to get the image location from the info dictionary.
For that, you need to request the related PHAsset object:
if let assetImage = info[UIImagePickerController.InfoKey.phAsset] as? PHAsset {
print("Image location info = \( assetImage.location))")
}
Important - before using this approach you need to request the user permission:
PHPhotoLibrary.requestAuthorization()
If you do not do it the info dictionary for UIImagePickerController.InfoKey.phAsset will return nil.