如何在Swift的现有.h文件中符合客观的c协议？

问题描述

我正在尝试在Swift中重新创建一个Ray Wenderlich教程，但使用Swift和Objective C。主要部分（即视图控制器和模型）在Swift中完成，并使用现有的.h和.m类的桥接头。

我无法让我的快速浏览控制器符合对象委托。

在我的.h文件中我有：

  @class RWTRateView; 
 
 @protocol RWTRateViewDelegate 
  - （void）rateView：（RWTRateView *）rateView ratingDidChange：（float）rating; 
 @end 
 @interface RWTRateView：UIView 
 ... 
 @property（assign）id< RWTRateViewDelegate>代表; 
 
 @end 
  

在我的快速文件中我有：

 class DetailViewController：UIViewController，UITextFieldDelegate，RWTRateViewDelegate，UIImagePickerControllerDelegate，UINavigationControllerDelegate {
 
 @IBOutlet var rateView：RWTRateView 
 ... 
 func configureView（）{
 //更新详细信息的用户界面。 
如果让细节：RWTScaryBugDoc = self.detailItem为？ RWTScaryBugDoc {
如果let rv = self.rateView {
 rv.notSelectedImage = UIImage（命名为shockedface2_empty.png）
 rv.halfSelectedImage = UIImage（命名为shockedface2_half.png） 
 rv.fullSelectedImage = UIImage（命名为shockedface2_full.png）
 rv.editable = true 
 rv.maxRating = 5 
 rv.delegate = self as RWTRateViewDelegate 
 rv.rating = detail.data.rating！ 
 self.titleField.text = detail.data.title 
 self.imageView.image = detail.fullImage 
} 
} 
} 
 ... 
 
 func rateView（rateView：RWTRateView !, ratingDidChange rating：Float！） - > Void {
 
 if let detail = self.detailItem as？ RWTScaryBugDoc {
 detail.data.rating = rating 
} 
} 
 
 ... 
} 
  

由于某种原因，我收到一条错误消息，指出Type DetailContController不符合协议RWTRateViewDelegate，我不太确定为什么。

完整的代码位于。

感谢任何反馈，因为我花了最近3天在线寻找答案，但找不到

解决方案

你有：

  func rateView（rateView：RWTRateView !, ratingDidChange rating：Float！） - > Void {
  

我的Xcode 6（beta 2）自动填充此行为

  func rateView（rateView：RWTRateView !, ratingDidChange rating： CFloat）{
  

请注意，第二个参数的类型是 CFloat ，而不是 Float！。 / p>

I am trying to recreate a Ray Wenderlich tutorial in Swift, but using both Swift and Objective C. The main part (i.e. view controllers and models) is done in Swift and using a bridging header for existing .h and .m classes.

I am having trouble trying to get my swift view controller to conform to a obj-c delegate.

In my .h file I have:

@class RWTRateView;

@protocol RWTRateViewDelegate
- (void)rateView:(RWTRateView *)rateView ratingDidChange:(float)rating;
@end
@interface RWTRateView : UIView
...
@property (assign) id <RWTRateViewDelegate> delegate;

@end

In my swift file I have:

class DetailViewController: UIViewController, UITextFieldDelegate, RWTRateViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@IBOutlet var rateView : RWTRateView
...
    func configureView() {
            // Update the user interface for the detail item.
            if let detail:RWTScaryBugDoc = self.detailItem as? RWTScaryBugDoc {
                if let rv = self.rateView {
                    rv.notSelectedImage = UIImage(named: "shockedface2_empty.png")
                    rv.halfSelectedImage = UIImage(named: "shockedface2_half.png")
                    rv.fullSelectedImage = UIImage(named: "shockedface2_full.png")
                    rv.editable = true
                    rv.maxRating = 5
                    rv.delegate = self as RWTRateViewDelegate
                    rv.rating = detail.data.rating!
                    self.titleField.text = detail.data.title
                    self.imageView.image = detail.fullImage
                }
            }
        }
    ...

    func rateView(rateView:RWTRateView!, ratingDidChange rating:Float!) ->Void {

        if let detail = self.detailItem as? RWTScaryBugDoc {
            detail.data.rating = rating
        }
    }

...
}

For some reason, I'm getting an error message saying that Type 'DetailViewController" does not conform to protocol 'RWTRateViewDelegate' and I'm not quite sure why.

The full code is at https://github.com/dwmchan/ScaryBugsSwift.

Would appreciate any feedback on this because I've spent the last 3 days looking for answers online but couldn't find anything on this.

解决方案

You have:

func rateView(rateView:RWTRateView!, ratingDidChange rating:Float!) ->Void {

My Xcode 6 (beta 2) autocompletes this line as

func rateView(rateView: RWTRateView!, ratingDidChange rating: CFloat) {

Note that second parameter's type is CFloat, not Float!.

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