Swift 2：图像选择器在didFinishPickingMediaWithInfo

Question

我正在创建一个应用程序，该应用程序利用从https://github.com/projectwakii/UIImagePickerController-in-Swift

检索到的图像选择器代码

如下所示：

 @IBAction func imageButtonDidPress(sender: AnyObject) {
        print("pressed")


        //show the action sheet (i.e. the little pop-up box from the bottom that allows you to choose whether you want to pick a photo from the photo library or from your camera 
        let optionMenu = UIAlertController(title: nil, message: "Where would you like the image from?", preferredStyle: UIAlertControllerStyle.ActionSheet)

        let photoLibraryOption = UIAlertAction(title: "Photo Library", style: UIAlertActionStyle.Default, handler: { (alert: UIAlertAction!) -> Void in
            print("from library")
            //shows the photo library
            self.imagePicker.allowsEditing = true
            self.imagePicker.sourceType = .PhotoLibrary
            self.imagePicker.modalPresentationStyle = .Popover
            self.presentViewController(self.imagePicker, animated: true, completion: nil)
        })
        let cameraOption = UIAlertAction(title: "Take a photo", style: UIAlertActionStyle.Default, handler: { (alert: UIAlertAction!) -> Void in
            print("take a photo")
            //shows the camera
            self.imagePicker.allowsEditing = true
            self.imagePicker.sourceType = .Camera
            self.imagePicker.modalPresentationStyle = .Popover
            self.presentViewController(self.imagePicker, animated: true, completion: nil)

        })
        let cancelOption = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: {
            (alert: UIAlertAction!) -> Void in
            print("Cancel")
            self.dismissViewControllerAnimated(true, completion: nil)
        })

        //Adding the actions to the action sheet. Camera will only show up as an option if the camera is available in the first place.
        optionMenu.addAction(photoLibraryOption)
        optionMenu.addAction(cancelOption)
        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera) == true {
            optionMenu.addAction(cameraOption)} else {
            print ("I don't have a camera.")
        }


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

        /*
        just adding extra text for fun
        */
    }

    // MARK: - Image Picker Delegates
    //The UIImagePickerController is a view controller that gets presented modally. When we select or cancel the picker, it runs the delegate, where we handle the case and dismiss the modal. 


    func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
        print("finished picking image")
    }


    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
        //handle media here i.e. do stuff with photo

        print("imagePickerController called")

            let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
            imageButtonImage.image = chosenImage
        dismissViewControllerAnimated(true, completion: nil)
    }

    func imagePickerControllerDidCancel(picker: UIImagePickerController) {
        //what happens when you cancel
        //which, in our case, is just to get rid of the photo picker which pops up
        dismissViewControllerAnimated(true, completion: nil)
    }

问题是，我选择图像的大多数时候应用程序崩溃。我认为这部分是由于某种低内存警告，虽然我不确定。点击“使用照片”按钮后，如下图所示

此外，有人知道每当我拍摄上面可见照片时我怎么能删除方形物

提前致谢！

Answer 1

尝试使用：

self.imagePicker.allowsEditing = false