如何解决没有为UIImagePickerControllerDelegate调用didFinishPickingMediaWithInfo
我正在尝试向我的iOS应用添加图片上传功能。我有一个selectPicture()函数,当用户单击上载按钮时会调用该函数,然后弹出一个警报,允许用户在相机和库之间进行选择。
func selectPicture() {
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
let alertController = UIAlertController(title: "Image Source",message: "Please choose your image source",preferredStyle: UIAlertControllerStyle.alert)
let camera_action = UIAlertAction(title: "Camera",style: UIAlertActionStyle.default) {
(_: UIAlertAction) -> Void in
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
print ("Camera Selected")
imagePicker.sourceType = UIImagePickerControllerSourceType.camera
imagePicker.allowsEditing = true
imagePicker.modalTransitionStyle = UIModalTransitionStyle.coverVertical
self.present(imagePicker,animated: true,completion: nil)
}
}
let photoLibrary_action = UIAlertAction(title: "Photo Library",style: UIAlertActionStyle.default) {
(_: UIAlertAction) -> Void in
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
print ("Photo Library Selected")
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
imagePicker.allowsEditing = true
imagePicker.navigationBar.titleTextAttributes = self.navbarattributes
imagePicker.navigationBar.tintColor = UIColor.white
imagePicker.navigationBar.isTranslucent = false
imagePicker.navigationBar.barTintColor = PING_ORANGE
imagePicker.navigationController?.title = "Pick Image"
imagePicker.modalTransitionStyle = UIModalTransitionStyle.coverVertical
self.present(imagePicker,completion: nil)
}
}
let cancel_action = UIAlertAction(title: "Cancel",style: UIAlertActionStyle.default) {
(_: UIAlertAction) -> Void in
print ("Cancel Selected")
}
alertController.addAction(camera_action)
alertController.addAction(photoLibrary_action)
alertController.addAction(cancel_action)
self.present(alertController,completion: nil)
}
到目前为止,一切正常,但是当我选择图像时,不会调用委托方法。
func imagePickerController(_ picker: UIImagePickerController,didFinishPickingMediawithInfo info: [String : Any],editingInfo: [AnyHashable: Any]!) {
let image = info[UIImagePickerControllerOriginalImage] as? UIImage
print("Image Print")
print(image)
if image != nil {
print ("INSIDE IMAGE DID FINISH PICKING")
dismiss(animated: false) {
self.uploadProfileImage(image: image!)
}
} else {
dismiss(animated: false) {
}
}
}
我是新手,所以我可能会缺少一些东西。有人可以帮我吗?
谢谢。
解决方法
您可能正在使用旧代码。您的method signature错误。应该是:
func imagePickerController(_ picker: UIImagePickerController,didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let image = info[.originalImage] as? UIImage {
print("Image Print")
print(image)
dismiss(animated: false) {
self.uploadProfileImage(image: image)
}
} else {
dismiss(animated: false)
}
}
,
我通过使用以下方法解决了此问题:
func imagePickerController(_ picker: UIImagePickerController,didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
dismiss(animated: false) {
self.uploadProfileImage(image: image)
}
}
else {
dismiss(animated: false) {
}
}
}
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