Re: animating addSubview with iOS4
Re: animating addSubview with iOS4
- Subject: Re: animating addSubview with iOS4
- From: Martin Linklater <email@hidden>
- Date: Wed, 02 Mar 2011 09:44:17 +0000
Thanks Luke
I did manage to find a solution. I was creating and calling the transition from within 'viewDidLoad'. If I move the call to 'transitionWithView' out of 'viewDidLoad' and into a different method the transition works fine. Animating properties work when called from 'viewDidLoad', but transitions hit their end state instantly.
Not sure if this is how it's meant to work, but I've not found any documentation mentioning this subtlety.
Thanks.
On 2 Mar 2011, at 04:40, Luke Hiesterman wrote:
> You can only animate properties documented as "animatable". Try adding your subview to its superview with an alpha of 0.0 and then animating the alpha to 1.0.
>
> Luke
>
> On Mar 1, 2011, at 8:32 AM, Martin Linklater <email@hidden> wrote:
>
>> Hi - I'm having trouble getting Core Animation to animate a UIButton appearing on my parent view. My old code did this:
>>
>> <create button>
>> [self.view addSubview:newButton];
>>
>> The button appeared straight away and works fine. Now, I'm trying to animate the appearance of this button and I just can't seem to get it working. Whatever I try the button appears straight away, just like the line above. I've tried numerous snippets of sample code, none of them work. My current code looks like this:
>>
>> <create button>
>> [UIView transitionWithView:self.view duration:1.0 options:UIViewAnimationOptionTransitionCurlUp animations:^{ [self.view addSubview:newButton]; } completion:nil];
>>
>> I'm obviously doing something wrong here, can anyone point me in the right direction ?
>>
>> Thanks - I'm new to CA, so please bare with me 8)._______________________________________________
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