IOS. Sharing image to Instagram without using a menu display

问题

Can anyone help and explain how to do sharing to Instagram without displaying the menu? For example, the application Prisma does it without using a menu display.

回答1:

You must do this:

1. Save your photo to photo library
2. Take asset url of saved photo
3. Open Instagram through URL Scheme with this URL

instagram://library?AssetPath=ASSET_PATH

Where ASSET_PATH is asset url taken on the second step.

Code example on Swift 3:

let library = ALAssetsLibrary()
library.writeImage(toSavedPhotosAlbum: image.cgImage, metadata: nil) { (url, error) in
    if let url = url {
        DispatchQueue.main.async {
            let path = url.absoluteString.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)
            let instagram = URL(string: "instagram://library?AssetPath=\(path)")
            UIApplication.shared.open(instagram!)
        }
    }
}

来源：https://stackoverflow.com/questions/38303413/ios-sharing-image-to-instagram-without-using-a-menu-display