ios app coding: 當圖像從gallery UIImagePickerController 選擇後, 獲取data並上傳到Firebase storage的問題.

firebase ios storage upload photo from gallery issue有問題，

官方範例也有問題.

像這樣：從UIImagePickerController獲得NSURL，在模擬器上ok，但在iPhone上 error。

error message:

2016-06-25 12:45:23.695 Swiftexample[4187:21957121] Body file is unreachable:/var/mobile/Media/DCI1M/100APPLE/IMG_0022.JPG
Error Domain=NSCocoaErrorDomain Code=257"The file"IMG_0022.JPG" couldn’t be opened because you don’t have permission to view it."

官方範例也有錯,google要加油了...
這樣不知有多少開發者遇到問題不知怎辦.

solution:把原function 替換.

guard let image: UIImage = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }

        

        let assets = PHAsset.fetchAssets(withALAssetURLs: [referenceUrl], options: nil)

        let asset = assets.firstObject

        asset?.requestContentEditingInput(with: nil, completionHandler: { (contentEditingInput, info) in

            let imageFile = contentEditingInput?.fullSizeImageURL

            let filePath = Auth.auth().currentUser!.uid + "/\(imageFile!.lastPathComponent)"

        

        //--

        let imageData = UIImagePNGRepresentation(image)!

        let photoStorageRef = Storage.storage().reference().child(filePath)

        

        let metadata = StorageMetadata()

        metadata.contentType = "image/png"

        

        photoStorageRef.putData(imageData, metadata: metadata) { metadata, error in

            if let error = error {               

                self.urlTextView.text = "Upload Failed 1: " + error.localizedDescription;               

                print("Error uploading:\(error.localizedDescription)")

                return

            } else {         

                self.uploadSuccess(photoStorageRef, storagePath: (metadata?.path)!)

            }

}           

        

})

[update 2019/9/14]
error: StorageExampleSwift[430:25460] Failed to issue sandbox extension for file file:///var/mobile/Media/DCIM/102APPLE/IMG_2044.JPG, errno = 1


solution:

// if it's a photo from the library, not an image from the camera
if #available(iOS 8.0, *), let referenceUrl = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.referenceURL)] as? URL {
let assets = PHAsset.fetchAssets(withALAssetURLs: [referenceUrl], options: nil)
let asset = assets.firstObject
asset?.requestContentEditingInput(with: nil, completionHandler: { (contentEditingInput, info) in
let imageFile = contentEditingInput?.fullSizeImageURL
let imageData_new = contentEditingInput?.displaySizeImage

guard let imageData = imageData_new!.jpegData(compressionQuality: 0.8) else { return }

let imagePath = Auth.auth().currentUser!.uid +
"/\(Int(Date.timeIntervalSinceReferenceDate * 1000))/\(imageFile!.lastPathComponent.lowercased())"

let metadata = StorageMetadata()
metadata.contentType = "image/jpeg"

// [START uploadimage]
let storageRef = self.storage.reference(withPath: imagePath)
storageRef.putData(imageData, metadata: metadata) { (metadata, error) in

if let error = error {
print("Error uploading: \(error)")
self.urlTextView.text = "Upload Failed 1: \(error)"
return
}

self.uploadSuccess(storageRef, storagePath: imagePath)
}





// [END uploadimage]

})

}