xcode Swift 3 - 无法覆盖“imagePickerController”
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Swift 3 - Cannot override 'imagePickerController'
提问by Etgar
My code:
我的代码：
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
self.image = image
self.imageStatusLabel.text = "There is a picture"
self.imageStatusLabel.textColor = UIColor.blue()
picker.dismiss(animated: true, completion: nil)
}
And this is the error:
这是错误：
Cannot override 'imagePickerController' which has been marked unavailable: APIs deprecated as of iOS 7 and earlier are unavailable in Swift
无法覆盖已标记为不可用的“imagePickerController”：从 iOS 7 及更早版本开始弃用的 API 在 Swift 中不可用
Well, I've tried to use the newer function:
好吧，我尝试使用较新的功能：
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
// But no image in the parameters
}
But then, there is no image in the parameters and I can get the image.
What should I do?
但是，参数中没有图像，我可以获得图像。
我该怎么办？
回答by Kaique Pantosi D'amato
You have to use the info parameter and make a cast to UIImage. Don't forget that you have to put a "Privacy - Photo Library Usage Description" and a "Privacy - Camera Usage Description" in the info.plistfile and fill the values with a string explaining the reason for request the access to photo library and camera.
您必须使用 info 参数并强制转换为UIImage. 不要忘记，您必须在文件中放置一个“ Privacy - Photo Library Usage Description”和“ Privacy - Camera Usage Description”，info.plist并用一个字符串填充这些值，解释请求访问照片库和相机的原因。
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
pictureImageView.contentMode = .scaleToFill
pictureImageView.image = pickedImage
}
picker.dismiss(animated: true, completion: nil)
}
回答by javimuu
To use imagePickerControllerin Swift3you need add a row with key: Privacy - Photo Library Usage Descriptionand value is a string(e.g: "Access to your photos") to Info.plistfile and let's try below:
要imagePickerController在Info.plist文件中使用，Swift3您需要在Info.plist文件中添加一行 key:Privacy - Photo Library Usage Description和 value 是一个string（例如：“访问您的照片”），让我们在下面尝试：
class YourController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
let imagePickerButton: UIButton = {
let btn = UIButton(frame: CGRect(x: 10, y: 10, width: 100, height: 100))
btn.setTitle("Choose a Photo", for: .normal)
btn.setTitleColor(.white, for: .normal)
btn.backgroundColor = .blue
btn.addTarget(self, action: #selector(handlePickerDidTap), for: .touchUpInside)
return btn
}()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(imagePickerButton)
}
func handlePickerDidTap() {
let imagePickerController = UIImagePickerController()
imagePickerController.delegate = self
imagePickerController.allowsEditing = true
present(imagePickerController, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
print("photo is selected")
// do some thing here
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
}
Hope it help!
希望有帮助！
回答by Sulthan
You get the image from the passed infodictionary, see the keys in the documentation
您从传递的info字典中获取图像，请参阅文档中的键
You probably want either
你可能想要
let image = info[UIImagePickerControllerOriginalImage] as? UIImage
or
或者
let image = info[UIImagePickerControllerEditedImage] as? UIImage
回答by Yakup Ad
import UIKit
import Photos
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@IBOutlet weak var imageView: UIImageView!
@IBAction func selectPhotoLibrary(_ sender: Any) {
let picker = UIImagePickerController()
picker.delegate = self
if UIImagePickerController.isSourceTypeAvailable(.camera) {
picker.sourceType = .camera
} else{
print("Kamera desteklenmiyor.")
}
present(picker, animated: true, completion:nil)
}
@IBAction func selectPhotoCamera(_ sender: Any) {
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = .photoLibrary
present(picker, animated: true, completion:nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
picker.dismiss(animated: true, completion:nil)
guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }
guard let imageData = UIImageJPEGRepresentation(image, 0.8) else { return }
self.imageView.image = image
print(imageData)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion:nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Read more for usage detail --> https://medium.com/@yakupad/swift-uiimagepickercontroller-kullan?m?-91771ed4c1d6
阅读更多使用细节--> https://medium.com/@yakupad/swift-uiimagepickercontroller-kullan?m?-91771ed4c1d6
