我正在尝试将图像从 ImageView 上传到 Firebase 存储。
用户将从相册或相机上传图像到 ImageView !我想要的是将此图像从 ImageView 上传到 firebase 存储。
我尝试按照 Firebase 文档中的示例进行操作,如下所示:
let localFile: NSURL = ImageView.image
let metadata = FIRStorageMetadata()
metadata.contentType = "image/jpeg"
// Upload file and metadata to the object 'images/mountains.jpg'
let uploadTask = storage.child("images/DeviceImage.jpg").putFile(localFile, metadata: metadata);
// Listen for state changes, errors, and completion of the upload.
uploadTask.observeStatus(.Pause) { snapshot in
// Upload paused
}
uploadTask.observeStatus(.Resume) { snapshot in
// Upload resumed, also fires when the upload starts
}
uploadTask.observeStatus(.Progress) { snapshot in
// Upload reported progress
if let progress = snapshot.progress {
let percentComplete = 100.0 * Double(progress.completedUnitCount) / Double(progress.totalUnitCount)
}
}
uploadTask.observeStatus(.Success) { snapshot in
// Upload completed successfully
}
// Errors only occur in the "Failure" case
uploadTask.observeStatus(.Failure) { snapshot in
guard let storageError = snapshot.error else { return }
guard let errorCode = FIRStorageErrorCode(rawValue: storageError.code) else { return }
switch errorCode {
case .ObjectNotFound:
// File doesn't exist
case .Unauthorized:
// User doesn't have permission to access file
case .Cancelled:
// User canceled the upload
...
case .Unknown:
// Unknown error occurred, inspect the server response
}
}
但我不知道如何将 UIImageView 转换为 NSURL。
最佳答案
您需要将图像转换为磁盘上的文件并获取要上传的 url。
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let filePath = "\(paths[0])/MyImageName.jpg"
// Save image.
UIImageJPEGRepresentation(image, 0.90)?.writeToFile(filePath, atomically: true)
参见:How do I save a UIImage to a file?
一旦写入磁盘,您就可以像这样获取文件的 url:
let localFile = NSURL(fileURLWithPath: filePath)
关于ios - 将 UIImage View 转换为 NSURL 以将其上传到 Firebase,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39132898/