ios - 将UIActivityIndi​​catorView添加到UIActionSheet

我试图以这种方式将UIActivityIndicatorView添加到UIActionsSheet:

UIActionSheet *actionSheet = [[UIActionSheet alloc]
                                  initWithTitle:nil
                                  delegate:sharedInstance
                                  cancelButtonTitle:nil
                                  destructiveButtonTitle:nil
                                  otherButtonTitles:nil];

for(NSMutableDictionary *dict in moreStructure)
   {
       NSString *value = [dict valueForKey:TITLE_PARAMETER];
       [actionSheet addButtonWithTitle:value];
   }
    [actionSheet addButtonWithTitle:@"Cancel"];
    actionSheet.cancelButtonIndex = [moreStructure count];
    [actionSheet showInView:((SectionViewController *)sharedInstance.currentViewController).view];
    UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
    activityView.frame = CGRectMake(100, 500, 15, 15);
    [activityView startAnimating];
    [actionSheet addSubview:activityView];

但是，当UIActionSheet出现时，我看不到它的UIActivityIndicatorView。请帮我。

最佳答案

我已经尝试过了，并且此方法正在运行...请检查activityView的框架...因为它的y为500 ...

UIActionSheet *actionSheet = [[UIActionSheet alloc]
                                  initWithTitle:nil
                                  delegate:nil
                                  cancelButtonTitle:@"Test"
                                  destructiveButtonTitle:@"Test"
                                  otherButtonTitles:nil];

    [actionSheet showInView:self.view];

    UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
    activityView.frame = CGRectMake(100, 5, 15, 15);
    [activityView startAnimating];
    [actionSheet addSubview:activityView];

    activityView.backgroundColor = [UIColor redColor];
    actionSheet.backgroundColor = [UIColor greenColor];