iOS共享应用无效

Question

所有显示都是以编程方式设置的，1问题如何以编程方式设置以下代码

NSArray *objectsToShare;
        NSString* shareText = @"hey check out this new app on App Store";
        NSURL *website = [NSURL URLWithString:[NSString stringWithFormat:@"%s", "http://www.lmg.co.za"]];

    objectsToShare = @[shareText, website];

    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];

    NSArray *excludeActivities = @[UIActivityTypeAssignToContact,
                                   UIActivityTypeSaveToCameraRoll,
                                   UIActivityTypeAddToReadingList,
                                   UIActivityTypePostToFlickr,
                                   UIActivityTypePostToVimeo,
                                   UIActivityTypePostToTwitter,
                                   UIActivityTypePostToWeibo,
                                   UIActivityTypePostToTencentWeibo,
                                   UIActivityTypePrint,
                                   UIActivityTypeAirDrop,
                                   UIActivityTypeAssignToContact,
                                   UIActivityTypeCopyToPasteboard];

        activityVC.excludedActivityTypes = excludeActivities;

       if ([activityVC respondsToSelector:@selector(popoverPresentationController)]) {
            activityVC.popoverPresentationController.sourceView = self.view;
            activityVC.popoverPresentationController.sourceRect = [(UIButton *)sender frame];
        }

        [NavigationController presentViewController:activityVC animated:YES completion:nil];

如果我应该添加一个单独的视图控制器，请告诉我

提前谢谢

Answer 1

下面的行

[NavigationController presentViewController:activityVC animated:YES completion:nil];

使用

[self presentViewController:activityVC animated:YES completion:nil];

Answer 2

NSString * title =[NSString stringWithFormat:@"Lorem Ipsum is simply dummy text of the printing and typesetting industry."];

NSArray* dataToShare = @[title];

UIActivityViewController* activityViewController =[[UIActivityViewController alloc] initWithActivityItems:dataToShare applicationActivities:nil];

[self presentViewController:activityViewController animated:YES completion:nil];