我在peoplePickerNavigationController中使用了UIActionSheet，并尝试在UIActionSheetDelegate中使用presentModalViewController：，但失败了

Question

情况是这样的：

在UIView A中有一个按钮，按下它后会将我们带到联系人选择器：

        ABPeoplePickerNavigationController *picker=[[ABPeoplePickerNavigationController alloc]init];
        picker.peoplePickerDelegate=self;
        [self presentModalViewController:picker animated:YES];
        [picker release];

我在选择器中使用了一个UIActionSheet，根据用户的选择转到不同的视图：

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person{
    UIActionSheet *actionSheet=[[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:nil otherButtonTitles:@"ViewB",@"ViewC",@"ViewD",@"ViewE",nil];
    [actionSheet showInView:picker.view];
    [actionSheet release];
        return NO;
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
    if(buttonIndex==0)
        [self gotoViewB];
    else if(buttonIndex==1)
        [self gotoViewC];
    else if(buttonIndex==2)
        [self gotoViewD];
    else if(buttonIndex==3)
        [self gotoViewE];
}

-(void)gotoViewB{
    ViewB *bClass=[[ViewB alloc]init];
    [self presentModalViewController:bClass animated:YES];
    [bClass release];
}

但是，当我在联系人选择器视图中选择了一行之后，什么也没有发生，因为选择器视图没有消失，ViewB也没有显示。我不知道这里出了什么问题，所以请帮我一下:<

Answer 1

您需要先添加导航控制器，然后再调用"presentModelViewController"

yourModelController =[[Yourmodelcontroller alloc]init];
UINavigationController *controller = [[UINavigationController alloc] initWithRootViewController: yourModelController];
self.hidesBottomBarWhenPushed = YES;
[[self navigationController] presentModalViewController:controller animated:YES];
[controller release];