objective-c - MBProgressHud 不适用于导航栏

Question

我在导航项中有一个按钮，其操作是 BUTTON_ACTION。通过按下它，MBProgressHUD 被激活并且 Action 起作用。但是使屏幕“隐藏”的“dimBackground”在导航栏上不起作用，并且可以在 MBProgressHUD 期间再次按下按钮。代码是:

  HUD = [[MBProgressHUD alloc] initWithView:self.view];
    [self.view addSubview:HUD];

    // Regiser for HUD callbacks so we can remove it from the window at the right time
    HUD.delegate = self;
    HUD.labelText=@"Buscando Bares...";
    HUD.dimBackground = YES;

    // Show the HUD while the provided method executes in a new thread
    [HUD showWhileExecuting:@selector(BUTTON_ACTION) onTarget:self withObject:nil animated:YES];

我尝试使用:

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
        [self.navigationController.view addSubview:HUD];

有什么想法吗？提前致谢。

Answer 1

要使 MBProgressHUD 显示在包括 UINavigationBar 在内的所有 UI 控件之上，您必须这样做:

 HUD = [[MBProgressHUD alloc] initWithWindow:self.view.window];
 [self.view.window addSubview:HUD];