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MBProgressHUD not showing

2024-07-29 16:15:11   221人阅读

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];

however it never appears, and application looks frozen to the end user. any ideas where I have gone wrong?

 

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];

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}

and remember to add MBProgressHUDDelegate in the corresponding header file.

MBProgressHUD not showing


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