Question

我正在我的app委托中初始化MMDrawerController，如下所示：

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
UIViewController *menu = (UIViewController *)[storyboard instantiateViewControllerWithIdentifier:@"menu"];
UINavigationController *center = (UINavigationController *)[storyboard instantiateViewControllerWithIdentifier:@"center"];

self.drawerController = [[MMDrawerController alloc]
                       initWithCenterViewController:center
                       leftDrawerViewController:menu
                       rightDrawerViewController:nil];

然后我将我的根视图控制器设置为MMDrawerController，如下所示：

[self.window setRootViewController:self.drawerController];

我希望能够在一个视图中覆盖UIActivityIndicator在MMDrawerController内部所有内容的顶部，以便我可以采用全局方式在某些操作完成时使UI不可用。

如果MMDrawerController是我的根视图，我可以在它上面添加一个视图吗？或者我只能将视图添加到其中一个子视图控制器（左抽屉，中央视图控制器或右抽屉）？

谢谢！

Answer 1

ProgressHUD cocoapod来源提供了如何进行此IMO的提示。基本上，它将进度视图添加到窗口本身。

- (id)init
{
self = [super initWithFrame:[[UIScreen mainScreen] bounds]];

id<UIApplicationDelegate> delegate = [[UIApplication sharedApplication] delegate];

if ([delegate respondsToSelector:@selector(window)])
    window = [delegate performSelector:@selector(window)];
else window = [[UIApplication sharedApplication] keyWindow];

//...

- (void)hudCreate //called as part of the [ProgressHUD show] method
{
// ...

if (hud == nil)
{
    hud = [[UIToolbar alloc] initWithFrame:CGRectZero];
    hud.translucent = YES;
    hud.backgroundColor = HUD_BACKGROUND_COLOR;
    hud.layer.cornerRadius = 10;
    hud.layer.masksToBounds = YES;

}
//...

if (hud.superview == nil)
{
    if (interaction == NO)
    {
        CGRect frame = CGRectMake(window.frame.origin.x, window.frame.origin.y, window.frame.size.width, window.frame.size.height);
        background = [[UIView alloc] initWithFrame:frame];
        background.backgroundColor = [UIColor clearColor];
        [window addSubview:background];
        [background addSubview:hud];
    }
    else [window addSubview:hud];
}

//...
}

我的左抽屉打开时我尝试显示ProgressHUD，因此它显示了左抽屉视图的一部分和中心视图的一部分。果然，HUD位于屏幕中间的所有内容之上，好像它完全不知道孩子们的观点。

将视图放在MMDrawerController之上

1 个答案: