objective-c - 在函数、objective-c 中使用协议(protocol)中的静态函数

Question

我想在函数中使用协议(protocol)中的静态函数:

    @implementation IPadPanoramaViewController
    - (void)viewDidLoad
    {
     [self.view addSubview:[PanoramaContent getPanoramaContentByPanoramaItem:[[PanoramaListItem alloc] init]]; 
     [super viewDidLoad];
}
@end

        @protocol PanoramaItemProtocol

        + (UIView *) getPanoramaItemBySection;

        @end


        @implementation PanoramaContent
    + (UIView *) getPanoramaContentByPanoramaItem:(id<PanoramaItemProtocol>) itemKind {

                return [itemKind getPanoramaItemBySection]; //here is the problem "unrecognized selector sent to instance"
        }
    @end

我希望“PanoramaListItem”不是 NSObject

Answer 1

问题是您已经定义了 getPanoramaBySection当您在实例上调用它时，它是一个类方法。在协议(protocol)声明中，替换 +用- .