模态视图不起作用

如何解决模态视图不起作用

| 我在视图控制器中使用以下代码，并且希望它提供另一个名为\“ chooserViewController \”模态的视图控制器

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

我收到无法识别\“ chooserViewController \”的编译错误。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];
}

解决方法

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];
}

如果您不是从笔尖加载，显然您会使用另一种方式来创建chooserViewController，但是您必须做一些事情以确保它存在，然后才能显示出来。