Make a queue.

Sent from my iPhone

> On Nov 5, 2015, at 6:10 PM, Carl Hoefs <[email protected]> wrote:
> 
> I don't want more than 1 alert presented at a time, of course, but they get 
> generated asynchronously. I thought dispatch_get_main_queue() would nicely 
> serialize any that occur. Thus David's comment that I'm just getting the 
> requests issued in a serialized fashion. 
> 
> I'm not certain how to have alerts that are scattered all throughout the app 
> to wait until some other alert's completion block executes. Are you saying to 
> have it control a global flag or some such?
> -Carl
> 
>> On Nov 5, 2015, at 3:53 PM, Eric E Dolecki <[email protected]> wrote:
>> 
>> That's the way. You should never need more than one presented at a time. 
>> 
>> Sent from my iP6+
>> 
>>> On Nov 5, 2015, at 5:44 PM, Tomasz Muszyński <[email protected]> wrote:
>>> 
>>> You should present next UIAlertController when first one has been dismissed 
>>> (when UIAlertAction handler is called).
>>> 
>>> Tomek
>>> 
>>>> Wiadomość napisana przez Carl Hoefs <[email protected]> w 
>>>> dniu 05.11.2015, o godz. 23:37:
>>>> 
>>>> iOS 9.1, iPhone 5S, ObjC
>>>> 
>>>> I'm getting the following runtime warning due to multiple simultaneous 
>>>> UIAlertControllers presenting at the same time:
>>>> 
>>>> Warning: Attempt to present <UIAlertController: 0x1835c000> on 
>>>> <MyViewController: 0x17d26e70> which is already presenting 
>>>> <UIAlertController: 0x18381400>
>>>> 
>>>> I know only one alert view controller can be presenting at a time, so the 
>>>> way I thought to serialize execution of each -presentViewController:: is:
>>>> 
>>>>     dispatch_async( dispatch_get_main_queue(), ^{
>>>>                         [ self presentViewController: alert 
>>>>                                             animated: YES 
>>>>                                           completion: nil ];
>>>>                     });
>>>> 
>>>> Why isn't dispatch_get_main_queue() enforcing serialized execution? Is 
>>>> there another way to do this?
>>>> -Carl
>>>> 
>>>> 
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