Я медленно работаю над разработкой Apple для обучения Swift, и я продолжаю сталкиваться с проблемой с моим жестом касания. Я воссоздал номера проекта несколько раз с тем же результатом.
Я добавляю жест касания к изображению, и это должно открыть библиотеку фотографий с моего компьютера. Ничего не произошло.
Когда я загружаю и запускаю образец файла из Apple, все работает. Когда я копирую и вставляю код из Apple в свой, снова ничего не происходит. Я прошел через все, что мог, но чувствую, что мне чего-то не хватает.
Вот мой код. Код Apple ниже:
import UIKit
class ViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// MARK: Properties
@IBOutlet weak var nameTextField: UITextField!
@IBOutlet weak var mealNameLabel: UILabel!
@IBOutlet weak var photoImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// handle the text fields user input through delegate callbacks
nameTextField.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: UITextFieldDelegate
func textFieldShouldReturn(textField: UITextField) -> Bool {
// Hide the Keyboard
textField.resignFirstResponder()
return true
}
func textFieldDidEndEditing(textField: UITextField) {
mealNameLabel.text = textField.text
}
// MARK: UIImagePickerControllerDelegate
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
// dismiss the picker if user cancels
dismissViewControllerAnimated(true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
// The info dictionary contains multiple representations of the image, and this uses the original.
let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage
// Set the photoviewimage to be the selected image
photoImageView.image = selectedImage
// Dismiss the picker
dismissViewControllerAnimated(true, completion: nil)
}
// MARK: Actions
@IBAction func selectImageFromPhotoLibrary(sender: UITapGestureRecognizer) {
// Hide the Keyboard
nameTextField.resignFirstResponder()
// UIImagePickerController is a view controller that lets a user pick media from their photo library.
let imagePickerController = UIImagePickerController()
// Only Allow pictures to be selected and not taken
imagePickerController.sourceType = .PhotoLibrary
// make sure the viewcontroller is notified when the user selects an image
imagePickerController.delegate = self
presentViewController(imagePickerController, animated: true, completion: nil)
}
@IBAction func setDefaultLabelText(sender: UIButton) {
mealNameLabel.text = "Default Text"
}
}
Вот код Apple:
import UIKit
class ViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// MARK: Properties
@IBOutlet weak var nameTextField: UITextField!
@IBOutlet weak var mealNameLabel: UILabel!
@IBOutlet weak var photoImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Handle the text field’s user input through delegate callbacks.
nameTextField.delegate = self
}
// MARK: UITextFieldDelegate
func textFieldShouldReturn(textField: UITextField) -> Bool {
// Hide the keyboard.
textField.resignFirstResponder()
return true
}
func textFieldDidEndEditing(textField: UITextField) {
mealNameLabel.text = textField.text
}
// MARK: UIImagePickerControllerDelegate
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
// Dismiss the picker if the user canceled.
dismissViewControllerAnimated(true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
// The info dictionary contains multiple representations of the image, and this uses the original.
let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage
// Set photoImageView to display the selected image.
photoImageView.image = selectedImage
// Dismiss the picker.
dismissViewControllerAnimated(true, completion: nil)
}
// MARK: Actions
@IBAction func selectImageFromPhotoLibrary(sender: UITapGestureRecognizer) {
// Hide the keyboard.
nameTextField.resignFirstResponder()
// UIImagePickerController is a view controller that lets a user pick media from their photo library.
let imagePickerController = UIImagePickerController()
// Only allow photos to be picked, not taken.
imagePickerController.sourceType = .PhotoLibrary
// Make sure ViewController is notified when the user picks an image.
imagePickerController.delegate = self
presentViewController(imagePickerController, animated: true, completion: nil)
}
@IBAction func setDefaultLabelText(sender: UIButton) {
mealNameLabel.text = "Default Text"
}
}
Рабочий код от Anbu
import UIKit
class ViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// MARK: Properties
@IBOutlet weak var nameTextField: UITextField!
@IBOutlet weak var mealNameLabel: UILabel!
@IBOutlet weak var photoImageView: UIImageView!
override func viewDidLoad() {
let tapgesture = UITapGestureRecognizer(target: self, action: Selector("imagepressed"))
photoImageView.userInteractionEnabled = true
photoImageView.addGestureRecognizer(tapgesture)
super.viewDidLoad()
// handle the text fields user input through delegate callbacks
nameTextField.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: UITextFieldDelegate
func textFieldShouldReturn(textField: UITextField) -> Bool {
// Hide the Keyboard
textField.resignFirstResponder()
return true
}
func textFieldDidEndEditing(textField: UITextField) {
mealNameLabel.text = textField.text
}
// MARK: UIImagePickerControllerDelegate
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
// dismiss the picker if user cancels
dismissViewControllerAnimated(true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
// The info dictionary contains multiple representations of the image, and this uses the original.
let selectedImage = info[UIImagePickerControllerOriginalImage] as! UIImage
// Set the photoviewimage to be the selected image
photoImageView.image = selectedImage
// Dismiss the picker
dismissViewControllerAnimated(true, completion: nil)
}
// MARK: Actions
func imagepressed () {
nameTextField.resignFirstResponder()
// UIImagePickerController is a view controller that lets a user pick media from their photo library.
let imagePickerController = UIImagePickerController()
// Only Allow pictures to be selected and not taken
imagePickerController.sourceType = .PhotoLibrary
// make sure the viewcontroller is notified when the user selects an image
imagePickerController.delegate = self
presentViewController(imagePickerController, animated: true, completion: nil)
}
/* @IBAction func selectImageFromPhotoLibrary(sender: UITapGestureRecognizer) {
let tapgesture = UITapGestureRecognizer(target: self, action: Selector("imagepressed"))
photoImageView.userInteractionEnabled = true
photoImageView.addGestureRecognizer(tapgesture)
// Hide the Keyboard
nameTextField.resignFirstResponder()
// UIImagePickerController is a view controller that lets a user pick media from their photo library.
let imagePickerController = UIImagePickerController()
// Only Allow pictures to be selected and not taken
imagePickerController.sourceType = .PhotoLibrary
// make sure the viewcontroller is notified when the user selects an image
imagePickerController.delegate = self
presentViewController(imagePickerController, animated: true, completion: nil)
}
*/
@IBAction func setDefaultLabelText(sender: UIButton) {
mealNameLabel.text = "Default Text"
}
}
