ios - 从 UIImagePicker 设置多个按钮图像

Question

在我看来，我有三个 4 按钮。当您单击一个按钮时，它会弹出 UIPickerView，因此您可以从库中选择一个图像用作个人资料图像。但是，当调用 didFinishPickingMediaWithInfo 时，它会为同一个按钮存储不同的照片。单击按钮 1，选择图像，从按钮 1 设置图像单击按钮 2，选择图像，再次为按钮 1 设置图像，而不是按钮 2。所有 4 个按钮都一样。继续为第一个按钮设置图像。

func promptForCamera() {

    let controller = UIImagePickerController()
    controller.sourceType = UIImagePickerControllerSourceType.Camera
    controller.delegate = self
    self.presentViewController(controller, animated: true, completion: nil)
}

func promptForPhotoRoll() {

    let controller = UIImagePickerController()

    controller.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    controller.delegate = self
    self.presentViewController(controller, animated: true, completion: nil)
}

func promptForSource() {
    let actionSheet = UIActionSheet(title: "Image Source", delegate: self, cancelButtonTitle: "Cancel", destructiveButtonTitle: nil, otherButtonTitles: "Camera", "Photo Roll")
    actionSheet.showInView(view)

}

func actionSheet(actionSheet: UIActionSheet!, clickedButtonAtIndex buttonIndex: Int) {
    if buttonIndex != actionSheet.firstOtherButtonIndex{
        if buttonIndex != actionSheet.firstOtherButtonIndex{
            promptForCamera()
        }
        else{
           promptForPhotoRoll()
        }
    }
}

 func imagePickerControllerDidCancel(picker: UIImagePickerController!) {
    dismissViewControllerAnimated(true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]!) {
    let image = info[UIImagePickerControllerOriginalImage] as UIImage

    self.p1Image = image


    self.dismissViewControllerAnimated(true , completion: nil)

    p1ImageButton.setImage(self.p1Image, forState: UIControlState.Normal)


}



@IBAction func p1PhotoTapped(sender: AnyObject) {


    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){

        promptForSource()


    }
    else{

        promptForPhotoRoll()


    }

}

显然，我知道在这个 didFinishPickingMedia 函数中，我正在为 p1ImageButton 设置图像。但是我如何更改此功能以便它为所选的相关按钮设置图像？我是否需要 4 个不同的 didFinishPickingWithMedia 函数(甚至可能)？每次选择按钮时，它都会调用 didFinish 方法。我需要传递某种参数吗？希望这一切都有意义。

Answer 1

将您的 4 个 ImagePickerController 保存在变量中，并在您的 imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]!) 方法中做出决定。

if (picker == pickerBla)
{

}
else if (picker == ...)
{

}