Re: Multiple simultaneous UIAlertControllers
Re: Multiple simultaneous UIAlertControllers
- Subject: Re: Multiple simultaneous UIAlertControllers
- From: Peter Tomaselli <email@hidden>
- Date: Thu, 05 Nov 2015 18:52:48 -0500
Pretty sure the WWDC 2015 video on NSOperations tackles a similar scenario in a quite elegant way. That might be worth investigating.
Peter
> On Nov 5, 2015, at 6:42 PM, Carl Hoefs <email@hidden> wrote:
>
> 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
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>>
>>>>>> Cocoa-dev mailing list (email@hidden)
>>>>>>
>>>>>> Please do not post admin requests or moderator comments to the list.
>>>>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>>>>>
>>>>>> Help/Unsubscribe/Update your Subscription:
>>>>>>
>>>>>> This email sent to email@hidden
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>>
>>>>> Cocoa-dev mailing list (email@hidden)
>>>>>
>>>>> Please do not post admin requests or moderator comments to the list.
>>>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>>>>
>>>>> Help/Unsubscribe/Update your Subscription:
>>>>>
>>>>> This email sent to email@hidden
>>>>
>>>> _______________________________________________
>>>>
>>>> Cocoa-dev mailing list (email@hidden)
>>>>
>>>> Please do not post admin requests or moderator comments to the list.
>>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>>>
>>>> Help/Unsubscribe/Update your Subscription:
>>>>
>>>> This email sent to email@hidden
>>>
>>>
>>> _______________________________________________
>>>
>>> Cocoa-dev mailing list (email@hidden)
>>>
>>> Please do not post admin requests or moderator comments to the list.
>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>>
>>> Help/Unsubscribe/Update your Subscription:
>>>
>>> This email sent to email@hidden
>>
>
>
> _______________________________________________
>
> Cocoa-dev mailing list (email@hidden)
>
> Please do not post admin requests or moderator comments to the list.
> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden