在 didFinishPickingImage 中显示两个图像 - iOS Swift 2.2

Question

我有两个 UIImageView，每个都有两个按钮。一个按钮拍摄一张照片，另一个按钮从图库中选择一张照片。两个按钮都可以正常工作。但是，当我通过第一个 sheet 中的按钮选择图像时，它会显示在两个 UIImageView 中。我的问题是如何才能只在相应的ImageView?.

中显示图片

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [NSObject : AnyObject]?) {
    print("Image Selected")
    self.dismissViewControllerAnimated(true, completion: nil)

    importedImage.image = image
    secondPhoto.image = image
}

// MARK: - Action Sheet


@IBAction func showActionSheet1(sender: AnyObject) {
    let image = UIImagePickerController()
    image.delegate = self
    let actionSheet = UIAlertController(title: "Action Sheet", message: "Choose Option", preferredStyle: .ActionSheet)
    let libButton = UIAlertAction(title: "Select from photo library", style: .Default, handler: { (libButton) -> Void in
        image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        image.allowsEditing = false

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

    })
    let cameraButton = UIAlertAction(title: "Take picture", style: .Default, handler: { (cameraButton) -> Void in

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){

        image.sourceType = UIImagePickerControllerSourceType.Camera
        image.allowsEditing = false
        self.presentViewController(image, animated: true, completion: nil)
        }
    })
    let cancelButton = UIAlertAction(title: "Cancel", style: .Cancel, handler: {(cancelButton) -> Void in
        print("Cancel selected")
    })
    actionSheet.addAction(libButton)
    actionSheet.addAction(cameraButton)
    actionSheet.addAction(cancelButton)


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

}

@IBAction func showActionSheet2(sender: AnyObject) {

    let image = UIImagePickerController()
    image.delegate = self

    let actionSheet = UIAlertController(title: "Action Sheet", message: "Choose Option", preferredStyle: .ActionSheet)
    let libButton = UIAlertAction(title: "Select from photo library", style: .Default, handler: { (libButton) -> Void in
        image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        image.allowsEditing = false
        self.presentViewController(image, animated: true, completion: nil)

    })
    let cameraButton = UIAlertAction(title: "Take picture", style: .Default, handler: { (cameraButton) -> Void in

        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){

            image.sourceType = UIImagePickerControllerSourceType.Camera
            image.allowsEditing = false
            self.presentViewController(image, animated: true, completion: nil)
        }
    })
    let cancelButton = UIAlertAction(title: "Cancel", style: .Cancel, handler: {(cancelButton) -> Void in
        print("Cancel selected")
    })
    actionSheet.addAction(libButton)
    actionSheet.addAction(cameraButton)
    actionSheet.addAction(cancelButton)


    self.presentViewController(actionSheet, animated: true, completion: nil)
}

Answer 1

发生这种情况是因为您在 ImageView 和 didFinishPickingImage 中都设置了图像，要解决此问题需要保持某种状态，例如单击 Button 以设置 Image，为此你可以创建一个 Bool 实例并在 Button 的操作中分配它的值，就像这样。

var isFromFirst: Bool = false

@IBAction func showActionSheet1(sender: AnyObject) {

    self.isFromFirst = true
    ...//your other code

}

@IBAction func showActionSheet2(sender: AnyObject) {

    self.isFromFirst = false
    ...//your other code

}

之后像这样检查 didFinishPickingImage 中的布尔值。

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [NSObject : AnyObject]?) {
    print("Image Selected")
    self.dismissViewControllerAnimated(true, completion: nil)
    if (self.isFromFirst) {
        importedImage.image = image
    }
    else {
        secondPhoto.image = image
    }
}

在 didFinishPickingImage 中显示两个图像 - iOS Swift 2.2

Display two images in didFinishPickingImage - iOS Swift 2.2

image

uiimageview

uiimagepickercontroller

ios

swift2