CODEWITHSUNDEEP
iosswiftuiimagepickercontrollergifanimated-gif
Lastmboy
Lastmboy

Reputation: 1869

How to load animated GIF from photo library

In iOS Swift I'm having difficulty loading an animated GIF from the device photo library to a UIImageView or creating a .gif file from it. I have no problem displaying the animated GIF if it's a file on a server or if it's right in the app. However, when I load it from the photo library, I lose the animation. I found some Objective-C solutions and tried to convert them over to Swift, but haven't had any luck.

Here is what I have so far:

@IBAction func buttonTapped(sender: UIButton) {
    selectPhoto()
}

func selectPhoto() {
    let photoLibraryController = UIImagePickerController()
    photoLibraryController.delegate = self
    photoLibraryController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

    let mediaTypes:[String] = [kUTTypeImage as String]
    photoLibraryController.mediaTypes = mediaTypes
    photoLibraryController.allowsEditing = false

    self.presentViewController(photoLibraryController, animated: true, completion: nil)
}

// UIImagePickerControllerDelegate
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let origImage = info[UIImagePickerControllerOriginalImage] as! UIImage

    self.imageView.image = origImage

    picker.dismissViewControllerAnimated(true, completion: nil)

}

Optimally, I would like to save the photo library image to a gif file on the server. From there I have no trouble displaying it. However, I need some help getting the data from the photo library into some type of property, without losing the animation. Do I need to use something like ALAssetsLibrary for this?

Thanks.

Upvotes: 6

Views: 7235

Answers (2)

Lenny
Lenny

Reputation: 33

You can get an access to the location of the image file using InfoKey .imageURL and retrieve Data from this URL

// UIImagePickerControllerDelegate
    
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let path = info[.imageURL] as? URL {
        if let data = try? Data(contentsOf: path) {
           self.imageView.image = UIImage(data: data)
                    
//Now you have Data of a file: so you can convert it to image or gif or send to server or start animation (e.g. Framework JellyGIF)
           self.imageView.startGif(with: .data(data))
                }
                  picker.dismissViewControllerAnimated(true, completion: nil)
                    }

Upvotes: 0

xue
xue

Reputation: 2475

Yes, Use ALAssetsLibrary → now called PHAsset.

You should get the NSData of the gif, not UIImage( because UIImage will only get the first frame.)

So basically you would do something like this:

One you get the asset

let requestOptions = PHImageRequestOptions()
requestOptions.isSynchronous = true // adjust the parameters as you wish    

PHImageManager.default().requestImageData(for: asset, options: requestOptions, resultHandler: { (imageData, UTI, _, _) in
    if let uti = UTI,let data = imageData ,
        // you can also use UTI to make sure it's a gif
       UTTypeConformsTo(uti as CFString, kUTTypeGIF) {
        // save data here
    }
})

Resource: PHAsset

Upvotes: 12

Related Questions