IOS。 在不使用菜单显示的情况下将图像分享到 Instagram

Question

任何人都可以帮助和解释如何在不显示菜单的情况下分享到 Instagram？ 例如，应用程序 Prisma 无需使用菜单显示即可完成此操作。

Answer 1

你必须这样做：

1. 将您的照片保存到照片库
2. 获取已保存照片的资产网址
3. 使用此 URL 通过 URL Scheme 打开 Instagram

instagram://library?AssetPath=ASSET_PATH

其中 ASSET_PATH 是在第二步中获取的资产 url。

Swift 3上的代码示例：

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!)
        }
    }
}

Answer 2

我知道这是一个老问题，但我只是想为那些可能正在寻找的人提供更新的答案。

Vitaly Berg 对弃用的代码有正确的方法。 这是对我有用的最新代码（Swift 5）：

@IBAction func instagramButtonClicked(_ sender: Any) {

            //check and see if we can save photos
            let status = PHPhotoLibrary.authorizationStatus()
            if (status == PHAuthorizationStatus.authorized) {
                // Access has been granted.
                self.shareToInstagram(theImage!)
            }else if (status == PHAuthorizationStatus.denied) {
                // Access has been denied.
                Notifications.showNotification("Please Allow Access To Photos To Share", style: .danger)
            }else if (status == PHAuthorizationStatus.notDetermined) {
                // Access has not been determined.
                PHPhotoLibrary.requestAuthorization({ (newStatus) in
                    if (newStatus == PHAuthorizationStatus.authorized) {
                        self.shareToInstagram(theImage!)
                    }else {
                        Notifications.showNotification("Please Allow Access To Photos To Share", style: .danger)
                    }
                })
            }else if (status == PHAuthorizationStatus.restricted) {
                // Restricted access - normally won't happen.
                Notifications.showNotification("Please Allow Access To Photos To Share", style: .danger)
            }
}


func shareToInstagram(_ theImageToShare: UIImage){
    self.saveToCameraRoll(image: theImageToShare) { (theUrl) in
        if let url = theUrl {
            DispatchQueue.main.async {
                if let path = url.absoluteString.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed){
                    let instagram = URL(string: "instagram://library?AssetPath=\(path)")
                    UIApplication.shared.open(instagram!)
                }
            }
        }
    }
}


func saveToCameraRoll(image: UIImage, completion: @escaping (URL?) -> Void) {
    var placeHolder: PHObjectPlaceholder? = nil
    PHPhotoLibrary.shared().performChanges({
        let creationRequest = PHAssetChangeRequest.creationRequestForAsset(from: image)
        placeHolder = creationRequest.placeholderForCreatedAsset!
    }, completionHandler: { success, error in
        guard success, let placeholder = placeHolder else {
            completion(nil)
            return
        }
        let assets = PHAsset.fetchAssets(withLocalIdentifiers: [placeholder.localIdentifier], options: nil)
        guard let asset = assets.firstObject else {
            completion(nil)
            return
        }
        asset.requestContentEditingInput(with: nil, completionHandler: { (editingInput, _) in
            completion(editingInput?.fullSizeImageURL)
        })
    })
}

希望这可以帮助某人！