UIImagePickerController與ImageView

Question

我想從照片庫中獲取圖像，但我有一個問題。我有3個不同的ImageViews。在這些Imageviews上有3種不同的水龍頭手勢。我需要選擇不同的照片並將其展示給用戶。

我該怎麼辦？

Answer 1

• 添加UINavigationControllerDelegate, UIImagePickerControllerDelegate到控制器

• 的函數來創建UITapGesture

  func createTapGesture(selectorName: String) -> UITapGestureRecognizer { 
  
      return UITapGestureRecognizer(target: self, action: Selector(selectorName)) 
  } 
  
  func imageTap(sender: AnyObject) { 
  
      currentImageView = sender.view as! UIImageView 
      pickImage() 
  } 
  

• 顯示ImagePickerView

  func pickImage() { 
  
      let imagePicker = UIImagePickerController() 
      imagePicker.delegate = self 
      imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary 
      imagePicker.allowsEditing = false 
      self.presentViewController(imagePicker, animated: true, completion: nil) 
  } 
  
  func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) { 
  
      dismissViewControllerAnimated(true, completion: nil) 
      currentImageView.image = image 
  } 
  

• 這些代碼添加到viewDidLoad中

  firstImageView.addGestureRecognizer(createTapGesture("imageTap:")) 
  secondImageView.addGestureRecognizer(createTapGesture("imageTap:")) 
  thirdImageView.addGestureRecognizer(createTapGesture("imageTap:")) 
  

• 在IB，請確保您的圖片視圖中設置User Interaction Enabled檢查

希望這可以幫助