Re: Multiple simultaneous UIAlertControllers
Re: Multiple simultaneous UIAlertControllers
- Subject: Re: Multiple simultaneous UIAlertControllers
- From: Tomasz Muszyński <email@hidden>
- Date: Fri, 06 Nov 2015 00:56:58 +0100
It was working that way on UIAlertView, but on UIAlertController it has changed and you need to serialize presentations manually.
tm
> Wiadomość napisana przez Carl Hoefs <email@hidden> w dniu 06.11.2015, o godz. 00:42:
>
> A queue of what? I would think that if only a single alert view can be
> presented at a time, then iOS would serialize them and present them when
> earlier ones complete. Is there no system-level solution to this?
> -Carl
>
>
>> Make a queue.
>>
>> Sent from my iPhone
>>
>>> On Nov 5, 2015, at 6:10 PM, Carl Hoefs <email@hidden>
>>> 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@hidden> 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 MuszyÅski <email@hidden>
>>>>> wrote:
>>>>>
>>>>> You should present next UIAlertController when first one has been
>>>>> dismissed (when UIAlertAction handler is called).
>>>>>
>>>>> Tomek
>>>>>
>>>>>> WiadomoÅÄ napisana przez Carl Hoefs
>>>>>> <email@hidden> 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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