MBProgressHUD没有显示 [英] MBProgressHUD not showing
问题描述
在我的应用中,我正在加载一个资源密集的视图,需要大约1到2秒才能加载。所以我将它加载到一个单独的线程中:
In my app, I am loading a resource heavy view that takes about 1 to 2 seconds to load. So I am loading it in a separate thread like this:
hud = [[MBProgressHUD alloc] init];
[hud showWhileExecuting:@selector(loadWorkbench:) onTarget:self withObject:nil animated:YES];
但它永远不会出现,应用程序看起来冻结给最终用户。我出错的任何想法?
however it never appears, and application looks frozen to the end user. any ideas where I have gone wrong?
推荐答案
是的。它不会出现,因为你永远不会告诉我将HUD添加为窗口的子视图。尝试类似:
Yes. It does not appear because you never tell add the HUD as a subview of the window. try something like:
// Should be initialized with the windows frame so the HUD disables all user input by covering the entire screen
HUD = [[MBProgressHUD alloc] initWithWindow:[UIApplication sharedApplication].keyWindow];
// Add HUD to screen
[self.view.window addSubview:HUD];
// Register for HUD callbacks so we can remove it from the window at the right time
HUD.delegate = self;
HUD.labelText = NSLocalizedString(@"Loading Workbench", nil);
HUD.detailsLabelText = NSLocalizedString(@"please wait", nil);
// Show the HUD while the provided method executes in a new thread
[HUD showWhileExecuting:@selector(loadWorkbench:) onTarget:self withObject:nil animated:YES];
由于您将自己设置为HUD代理,因此还要添加以下委托方法:
Since you are setting yourself as the HUD delegate, also add the following delegate method:
- (void)hudWasHidden {
// Remove HUD from screen
[HUD removeFromSuperview];
// add here the code you may need
}
并记得在相应的头文件中添加 MBProgressHUDDelegate
。
and remember to add MBProgressHUDDelegate
in the corresponding header file.
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