未调用ELCImagePickerController委托方法

Question

我正在尝试使用ELCImagePickerController构建一个应用程序。我发现我可以选择多张图片。但是，未调用ELCImagePickerController委托方法。

这是我的代码：

@IBAction func uploadImages(sender: AnyObject) {

        // Create the alert controller
        //var alertController = UIAlertController(title: "", message: "", preferredStyle: .Alert)
        var alertController = UIAlertController(title: nil, message: nil, preferredStyle: .Alert)
        // Create the actions
        var takeAction = UIAlertAction(title: "Take Photos", style: UIAlertActionStyle.Default) {
            UIAlertAction in
            NSLog("Take Photos Pressed")

        }

        var selectAction = UIAlertAction(title: "Select Photos", style: UIAlertActionStyle.Default) {
            UIAlertAction in
            NSLog("Select photos Pressed")
            var imagePicker = ELCImagePickerController(imagePicker: ())
            imagePicker.maximumImagesCount = 2
            imagePicker.returnsOriginalImage = false
            imagePicker.returnsImage = true
            imagePicker.onOrder = true
            imagePicker.delegate = self

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

        }

        var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) {
            UIAlertAction in
            NSLog("Cancel Pressed")
        }

        // Add the actions
        alertController.addAction(takeAction)
        alertController.addAction(selectAction)
        alertController.addAction(cancelAction)

        // Present the controller
        self.presentViewController(alertController, animated: true, completion: nil)
        }
    }

func elcImagePickerController(picker: ELCImagePickerController!, didFinishPickingMediaWithInfo info:[AnyObject]!) {

                NSLog("controller executed.")

    }

Answer 1

您需要设置ImagePicker委托

imagePicker.imagePickerDelegate = self

Answer 2

你的NSLog语句会被调用吗？我在尾部闭包语法中注意到的一件事是，您使用的是类型名称，而不是该类型的变量。例如，您正在编写UIAlertAction in ...与alertAction in ...。您应该提供要在闭包中使用的名称，而不是类型本身。如果闭包的其余部分没有执行，则永远不会设置委托，因此永远不会调用委托方法。