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[英]How to get the image picker in (swift 3) to switch back and 4th between photo gallery and camera.
[英]How to get photo local url from image picker in swift 4
我想通過 pod Alamofire (SessionManager) 將圖庫 (iOS) 中的照片上傳到服務器(uploadUrl 在代碼中通過 .getWalluploadUrl 獲取是正確的)我正在嘗試使用 imagePicker 獲取照片。 但是接下來在 Alamofire 上傳中出現錯誤:
multipartEncodingFailed(原因:Alamofire.AFError.MultipartEncodingFailureReason.bodyPartFileNotReachableWithError(atURL:file:///var/mobile/Containers/Data/Application/366A5FD0-D597-44DC-A6C7-943DDEAB03B7/Documents/asset,錯誤域=錯誤域= NSCocoaErrorDomain Code=260 “無法打開文件“asset.JPG”,因為沒有這樣的文件。” UserInfo={NSURL=file:///var/mobile/Containers/Data/Application/366A5FD0-D597-44DC -A6C7-943DDEAB03B7/Documents/asset.JPG,NSFilePath=/var/mobile/Containers/Data/Application/366A5FD0-D597-44DC-A6C7-943DDEAB03B7/Documents/asset.JPG,NSUnderlying7Error=0x9fPOS=0x9fPOS0 2 "沒有這樣的文件或目錄"}}))
為什么這個文件不存在? 我在哪里使用 imagePicker 獲得了錯誤的本地路徑?
代碼(我知道這段代碼很糟糕,但我只是想找出本地路徑的問題):
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let imageUrl = info[UIImagePickerController.InfoKey.referenceURL] as! NSURL
let imageName = imageUrl.lastPathComponent
let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
let photoURL = NSURL(fileURLWithPath: documentDirectory)
let localPath = photoURL.appendingPathComponent(imageName!)
let image = info[UIImagePickerController.InfoKey.originalImage]as! UIImage
let data = image.pngData()
self.getWalluploadUrl { (uploadUrl) in
let sessionManager = SessionManager.default
sessionManager.upload(
multipartFormData: {
data in
data.append(
localPath!, //????? Incorrect path
withName: "file",
fileName: imageName!,
mimeType: "image/jpeg"
)
},
to: uploadUrl,
encodingCompletion: {
(encodingResult) in
switch encodingResult {
case .success(let upload, _, _):
upload
.uploadProgress { (progress) in
print("progress:",progress)
}
.responseJSON { response in
switch response.result {
case .success(let value):
let json = JSON(value)
print(json)
case .failure(let error):
print(error)
}
}
case .failure(let error):
print(error)
}
}
)
}
我為 Swift 4.2 找到了正確的方法。 有用:
let photoLocalUrl = (info[UIImagePickerController.InfoKey.imageURL] as? URL)!
它不需要使用.path.lastPathComponent。 這已經是完整且正確的本地路徑(作為 URL)。
注意:所有照片 URL(以及其他文件)都是臨時的,下次啟動應用程序時會有所不同。
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