IOS Swift imagePickerController未调用
IOS Swift imagePickerController未调用
提问于 2018-07-23 02:53:27
class MyPage: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {
var imagePicker = UIImagePickerController()
@IBOutlet weak var selectImage: UIButton!
override func viewDidLoad() {
imagePicker.sourceType = .photoLibrary
imagePicker.delegate = self
}
@IBAction func selectImage(_ sender: Any) {
print("a")
if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
print("b")
imagePicker.allowsEditing = false
imagePicker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
self.present(imagePicker, animated: true,completion: nil)
}
@objc func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!){
self.dismiss(animated: true, completion: { () -> Void in
print("dismiss")
})
print(image)
selectImage.setImage(image, for: .normal)
}
}如果触摸按钮打印A和B并弹出photoLibrary
但选择照片而不是调用imagePickerController
选择照片后不执行任何操作
如何在swift 4中使用imagepicker？
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-07-23 03:51:45
从Delegate方法和delegate方法中删除@objc是这样的，所以用下面的代码替换您的函数：
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])并使用以下命令获取图像：
guard let selectedImage = info[UIImagePickerControllerOriginalImage] as? UIImage else {return}Stack Overflow用户
发布于 2018-07-23 06:22:30
import UIKit类ViewController: UIViewController，UIImagePickerControllerDelegate，UINavigationControllerDelegate {
let imageView = UIImageView()
let imagepicker = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
self.imagepicker.delegate = self
imageView.frame = CGRect(x: 40, y: 150, width: 100, height: 100)
self.view.addSubview(imageView)
}
@IBAction func uploadImage(_ sender : UIButton) {
imagepicker.cameraDevice = .rear
imagepicker.cameraCaptureMode = .photo
imagepicker.sourceType = .photoLibrary
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else {
return
}
imageView.image = image
print(image)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
self.dismiss(animated: true, completion: nil)
}}
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51471062
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