Re: iOS: Adding pinch-zoom to UIImageView
Re: iOS: Adding pinch-zoom to UIImageView
- Subject: Re: iOS: Adding pinch-zoom to UIImageView
- From: David Duncan <email@hidden>
- Date: Tue, 17 Jan 2012 11:34:15 -0800
You need to set the min/max magnification properties as well. You may also need to implement the delegate protocol to tell the scroll view which view to zoom as well (I'm almost certain this is necessary, but I haven't done this in a little bit).
On Jan 17, 2012, at 11:30 AM, Jon Sigman wrote:
> I just added this:
> [scrollView setContentSize:CGSizeMake(128.0,96.0)];
> Now I can move the image about within the UIScrollView, but I can't pinch/zoom it.
>
>
>
> ________________________________
> From: Eric E. Dolecki <email@hidden>
> To: Jon Sigman <email@hidden>
> Cc: Fritz Anderson <email@hidden>; Cocoa- Dev List <email@hidden>
> Sent: Tuesday, January 17, 2012 11:18 AM
> Subject: Re: iOS: Adding pinch-zoom to UIImageView
>
>
> Did you set the contentSize for the scroll view?
>
>
>
>
>
> Google Voice: (508) 656-0622
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>
> On Tue, Jan 17, 2012 at 2:11 PM, Jon Sigman <email@hidden> wrote:
>
> Here's what I've tried:
>>
>> IBOutlet UIScrollView *scrollView; // created & placed on GUI with IB
>>
>> @synthesize scrollView; // hooked up from w/in IB
>>
>> - (void)viewDidLoad {
>> [super viewDidLoad];
>> imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"default.png"]];
>> [scrollView addSubview:imageView];
>> return;
>> }
>>
>> The UIScrollView & UIImageView show up on the GUI, with the correct image, but gestures are ignored. What am I overlooking?
>>
>>
>>
>>
>>
>> ________________________________
>> From: Fritz Anderson <email@hidden>
>> To: Jon Sigman <email@hidden>
>> Cc: Cocoa- Dev List <email@hidden>
>> Sent: Tuesday, January 17, 2012 8:11 AM
>> Subject: Re: iOS: Adding pinch-zoom to UIImageView
>>
>>
>> On 16 Jan 2012, at 3:57 PM, Jon Sigman wrote:
>>
>>> What's the typical way to add pinch capability to a UIImageView?
>>
>> Put it in a UIScrollView.
>>
>> — F
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--
David Duncan
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