Question

我正在尝试为我的应用添加共享功能。我创建了一个按钮并导入了UIKIT框架。 Xcode继续抛出错误没有可见的@interface为'MainMenuScene'声明选择器'presentViewController：animated：completion 。知道如何解决这个问题吗？

我的代码mainmenuscene.m

- (void)share {
    NSArray * activityItems = @[[NSString stringWithFormat:@"Some initial text."], [NSURL URLWithString:@"http://www.google.com"]];
    NSArray * applicationActivities = nil;
    NSArray * excludeActivities = @[UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypePostToWeibo, UIActivityTypePrint, UIActivityTypeMessage];

    UIActivityViewController * activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:applicationActivities];
    activityController.excludedActivityTypes = excludeActivities;

    [self presentViewController:activityController animated:YES completion:nil];     
}

MainMenuScene.h

#import "CCNode.h"
#import <UIKit/UIActivityViewController.h>


@interface MainMenuScene : CCNode{

UIViewController *viewController;
UIActivityViewController *activityController;


}

@end

Answer 1

在这种情况下调用self是调用MainMenuScene对象。您的MainMenuScene＆＃39;是CCNode类型，类型为NSObject。你需要打电话给

presentViewController:animated:completion

在从UIViewController继承的对象上。具体来说，您需要从视图控制器中调用它，以便从中显示您的activityController。

Answer 2

使用方法：

- (void)presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion

目标类必须是UIViewController的子类。在这里，你的MainMenuScene是CCNode的子类，它甚至没有间接地从UIViewController继承。

请找到合适的视图控制器（可能是您的根控制器）并在其上显示UIActivityViewController

UIActivityViewController问题

2 个答案: