An additional thought: when you put references to the presentingVC's properties
in the completion block you may get retain cycle warnings. This is caused by
the fact that blocks keep strong references to objects. Passing data back to
the referring VC could also be done in viewWillDisappear, coul
On Apr 12, 2013, at 10:00 AM, Roland King wrote:
> The completion block is really for your view controller to know when it is
> entirely finished presenting or entirely finished dismissing a view
> controller so that it can do some cleanup work, if it needs to. They often
> don't.
Got it!
T
On 12 Apr, 2013, at 9:50 PM, Koen van der Drift
wrote:
>
> On Apr 12, 2013, at 9:30 AM, Roland King wrote:
>
>> Did you have a particular use-case in mind?
>
> I am using the modalVC to set/change parameters for a calculation. These
> parameters are properties of the presentingVC, which a
On Apr 12, 2013, at 9:30 AM, Roland King wrote:
> Did you have a particular use-case in mind?
I am using the modalVC to set/change parameters for a calculation. These
parameters are properties of the presentingVC, which also has a 'Start
Calculation' button. So when I open the modalVC, the
On 12 Apr, 2013, at 8:50 PM, Koen van der Drift
wrote:
> When a modal UIViewController is dismissed, Apple recommends to use the
> delegate pattern to pass data back to the presenting UIViewController. I am
> using that and it works just fine. But I was wondering if the same (passing
> dat
When a modal UIViewController is dismissed, Apple recommends to use the
delegate pattern to pass data back to the presenting UIViewController. I am
using that and it works just fine. But I was wondering if the same (passing
data back) can be achieved using the completion block. Right now, I just
