模态视图不起作用

Question

我在视图控制器中使用以下代码，我想让它呈现另一个名为“chooserViewController”modaly的视图控制器

    - (void)presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated
{
    [self presentModalViewController:chooserViewController animated:YES];
}

我收到编译错误而无法识别“chooserViewController”。我做错了吗？

更新

- (void)add:(id)sender 
{
    RoutineExerciseChooserViewController *routineExerciseChooserViewController = [[RoutineExerciseChooserViewController alloc] initWithNibName:@"RoutineExerciseChooserViewController" bundle: nil];
    [self presentModalViewController:routineExerciseChooserViewController animated:YES];
    [routineExerciseChooserViewController release];
}

Answer 1

您需要创建chooserViewController：

- (void)presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated {
    ChooserViewController *chooserViewController = [[ChooserViewController alloc] initWithNibName:@"ChooserView" bundle: nil];
    [self presentModalViewController:chooserViewController animated:YES];
    [chooserViewController release];
}

如果您没有从笔尖加载，显然您将使用不同的方式创建chooserViewController，但您必须采取一些措施来确保它存在，然后才能显示。