问题描述
我是新手，我需要一些帮助来进行整合一个组件AKPickerView(用Objective C编写).组件的链接: https://github.com/Akkyie/AKPickerView
I am new in swift and i need some help to integratea component AKPickerView (written in Objective C).link of component: https://github.com/Akkyie/AKPickerView
但是我没有成功，因为有一个协议: AKPickerViewDelegate 在Swift中不起作用:
But i have no success, because there is a protocol: AKPickerViewDelegate that don't work in Swift:
@class AKPickerView;
@protocol AKPickerViewDelegate <NSObject>
@optional
- (NSString *)pickerView:(AKPickerView *)pickerView titleForItem:(NSInteger)item;
- (NSUInteger)numberOfItemsInPickerView:(AKPickerView *)pickerView;
- (void)pickerView:(AKPickerView *)pickerView didSelectItem:(NSInteger)item;
@end
在Swift中，我编写了以下代码:
In Swift i wrote this code:
class ViewController: UIViewController, AKPickerViewDelegate {
var pickerView : AKPickerView = AKPickerView()
var titles : NSArray = ["Janeiro","Fevereiro","Março","Abril","Maio"]
...
我暗含了这种方法:
func numberOfItemsInPickerView(pickerView : AKPickerView!) -> Int{
return self.titles.count
}
func pickerView(pickerView: AKPickerView, titleForItem item : NSInteger) -> NSString {
return self.titles[item] as NSString
}
但是编译器显示此错误:
But the compiler show this error:
Type 'ViewController' does not conform to protocol 'AKPickerViewDelegate'
感谢一些帮助谢谢！
推荐答案
正如我在链接AKPickerViewDelegate中看到的那样，它具有必需的方法.
As i have seen in link AKPickerViewDelegate has required method.
@protocol AKPickerViewDelegate <NSObject>
@required
- (NSUInteger)numberOfItemsInPickerView:(AKPickerView *)pickerView;
- (NSString *)pickerView:(AKPickerView *)pickerView titleForItem:(NSInteger)item;
@optional
- (void)pickerView:(AKPickerView *)pickerView didSelectItem:(NSInteger)item;
@end
因此，您需要快速实现它们.按如下所示实施这些方法，它将消除错误
So in swift you need to implement them.Implement these methods as below and it will remove the error
func numberOfItemsInPickerView(pickerView: AKPickerView!) -> UInt {
return self.titles.count
}
func pickerView(pickerView: AKPickerView!, titleForItem item: Int) -> String! {
return self.titles[item]
}
注意，您还需要将它们添加到桥接标题"中.只需在Swifter-Bridging-Header.h
Note you also need to add them in Bridging Header.Just write this #import "AKPickerView.h" in Swifter-Bridging-Header.h
这篇关于与Swift集成Objective C协议的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！