要求用户从照片库或照相机中选择照片swift2

Question

我希望用户从他的照片库或照相机中选择一张照片。我找不到任何例子。我想用类似UIAlertView的方式提示用户。

我的代码可以很好地处理照片库。

@IBAction func selectLeftPhoto(sender: AnyObject) { 

     flag = 1 

     let myPickerController = UIImagePickerController() 
     myPickerController.delegate = self; 
     myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary 

     self.presentViewController(myPickerController, animated: true, completion: nil) 

    } 

    @IBAction func selectRightButton(sender: AnyObject) { 

     flag = 2 

     let myPickerController = UIImagePickerController() 
     myPickerController.delegate = self; 
     myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary 

     self.presentViewController(myPickerController, animated: true, completion: nil) 

    } 



    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) 
    { 

     let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage 

     if flag == 1 { 
      leftImage.image = pickedImage 
      let imageData = UIImageJPEGRepresentation(pickedImage!, 0.5) 
      let base64String = imageData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0)) 
      photo1 = base64String 

     }else if flag == 2 { 
      rightImage.image = pickedImage 
      let imageData = UIImageJPEGRepresentation(pickedImage!, 0.5) 
      let base64String = imageData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0)) 
      photo2 = base64String 
     } 

     dismissViewControllerAnimated(true, completion: nil) 



    } 

我的用户界面：

我想提示用户从照片库或相机选择点击选择照片按钮后。

Answer 1

 let alert:UIAlertController=UIAlertController(title: "Choose Image", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet) 
     let cameraAction = UIAlertAction(title: "Camera", style: UIAlertActionStyle.Default) 
     { 
      UIAlertAction in 
      self.openCamera() 

     } 
     let gallaryAction = UIAlertAction(title: "Gallary", style: UIAlertActionStyle.Default) 
     { 
      UIAlertAction in 
      self.openGallary() 
     } 
     let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) 
     { 
      UIAlertAction in 

     } 
     // Add the actions 
     picker?.delegate = self 
     alert.addAction(cameraAction) 
     alert.addAction(gallaryAction) 
     alert.addAction(cancelAction) 
     // Present the controller 
     if UIDevice.currentDevice().userInterfaceIdiom == .Phone 
     { 
      self.presentViewController(alert, animated: true, completion: nil) 
     } 
     else 
     { 
      popover=UIPopoverController(contentViewController: alert) 
      popover!.presentPopoverFromRect(btnClickMe.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true) 
     } 

Answer 2

let optionMenu = UIAlertController(title: nil, message: "Choose Option for Image", preferredStyle: .ActionSheet) 

// 2 
let cameraAction = UIAlertAction(title: "Camera", style: .Default, handler: { 
    (alert: UIAlertAction!) -> Void in 
flag = 1 

    let myPickerController = UIImagePickerController() 
    myPickerController.delegate = self; 
    myPickerController.sourceType = UIImagePickerControllerSourceType.Camera 

    self.presentViewController(myPickerController, animated: true, completion: nil) 
}) 
let photoGalleryAction = UIAlertAction(title: "Photo Li", style: .Default, handler: { 
    (alert: UIAlertAction!) -> Void in 

flag = 2 

    let myPickerController = UIImagePickerController() 
    myPickerController.delegate = self; 
    myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary 

    self.presentViewController(myPickerController, animated: true, completion: nil) 


}) 

// 
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: { 
    (alert: UIAlertAction!) -> Void in 
    println("Cancelled") 
})