Re: Multiple simultaneous UIAlertControllers
Re: Multiple simultaneous UIAlertControllers
- Subject: Re: Multiple simultaneous UIAlertControllers
- From: Carl Hoefs <email@hidden>
- Date: Thu, 05 Nov 2015 15:42:39 -0800
- Importance: Normal
- X_v_e_cd: 42627b69e0555b46fb096be3f3b1e872
- X_v_r_cd: 0b55eaccc3c3c1452c339db8e6596451
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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