I can't get data from assets in new version

[Casporro]

With the new version (3.0.0) I can't get NSData from assets... If I do this:

assets.first!.fetchImageWithSize(sender.view!.bounds.size, completeBlock: {
          (image: UIImage?) -> Void in

           if let imageToSave = image {
                   let data: NSData = UIImageJPEGRepresentation(imageToSave, 0.7) //data always nil
                    self.saveImage(data!)
        }
}

data is always nil an image never is nil... What is the problem?

[zhangao0086]

Could you try the fixed syntax:
let data: NSData? = UIImageJPEGRepresentation(imageToSave, 0.7)

In addition, if the imageToSave cannot obtain the jpeg image data, it will return nil. In this case, try to replace UIImageJPEGRepresentation with UIImagePNGRepresentation.

[Boli-CS]

I have another question, how could I get the NSURL of the photo choosed?

[zhangao0086]

Hi @Boli-CS
Why do you want to do this?

[Casporro]

Why the fetchImageWithSize method return other size??

[Casporro]

and how can I get NSData from AVURLAsset?

[zhangao0086]

Hi @Casporro
You can get NSData from AVURLAsset like this:

assets.first?.fetchAVAssetWithCompleteBlock({ (avAsset) -> Void in
    let data = NSData(contentsOfURL: avAsset!.URL)
    print(data)
})

[zhangao0086]

For the _Why the fetchImageWithSize method return other size??_

It's my fault! Fixed in 78d4e8c :)

[Casporro]

Thank you @zhangao0086, nice library and nice work.
I will use exporter to export video to something compatible with iOS and Android.

[Casporro]

Can you tell me how can I get a thumbnail from avAsset?

[zhangao0086]

@Casporro
Try using AVAssetImageGenerator.
See also:http://stackoverflow.com/questions/8906004/thumbnail-image-of-video

[melihkeskin]

hi zhangao0086,
Nice work..Thanks for sharing.

i want to ask some questions

How can i get images from assets ?
Can you write a little sample code ?

[zhangao0086]

Hi @melihkeskin
Try this:

assets.first?.fetchFullScreenImageWithCompleteBlock({ image in
    print(image)
})

[melihkeskin]

Hello again :),

thank you for your reply
is it only first image isnt it?

what can i do multiple picking ?

and last question :)

how can i get didFinishPickingMediaWithInfo

[zhangao0086]

@melihkeskin
You can do this:

var images: [UIImage] = []
for asset in assets {
    asset.fetchFullScreenImageWithCompleteBlock({ image in
        images.append(image!)

        if images.count == assets.count {
            print("done")
        }
    })
}

Why do you want to get didFinishPickingMediaWithInfo? It's a delegate method of UIImagePickerController, so it's never called in this library.

[melihkeskin]

Thank for help. I want to get metadata of the images.
I find many sample on the internet but generally they used in the didfinishpickingmediawithinfo. İf you can know other way please tell

[zhangao0086]

@melihkeskin
If you need to get the metadata of a DKAsset, just access the originalAsset like so:

if let originalAsset = asset.originalAsset {
    originalAsset.mediaType
    originalAsset.mediaSubtypes
    originalAsset.creationDate
    originalAsset.modificationDate
    // ...
}

See also: Reading Asset Metadata

[melihkeskin]

Hello zhangao0086,

i appreciate you. You are really good my friend.
Thanks for everything.
Nice work.

[zhangao0086]

@melihkeskin
I’m glad that helped you :)

[aldolazuardi]

hi zhangao0086,
im following ur answer to melihkeskin and it not works (pic below), why i got this error?

[zhangao0086]

Hi @aldolazuardi

In 3.0.4, I've updated the fetchImage... interface:
the completeBlock: (image: UIImage?) -> Void was changed to completeBlock: (image: UIImage?, info: [NSObject : AnyObject]?) -> Void so you need to change:

asset.fetchImageWithSize(size, completeBlock: { image in
    // ...
})

to:

asset.fetchImageWithSize(size, completeBlock: { image, info in
    // ...
})