iOS - Using addSubView on a UIScrollView

Question

I am trying to use this bit of code:

[[myUIView layer] addSublayer: layer];
[myScrollView addSubview:myUIView];
[layer addAnimation:[self imagesAnimation] forKey:@"images"];

What I am doing to do is taking a layer that will later get a CAKeyFrameAnimate and placing that layer inside a UIView so I can use the standard view function:

-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
    return myUIView;
}

But I digress... Then placing the UIView & layer inside of a UIScrollView so I get all of that good UIScrollView functionality.

At least this is how I believe it to work atm.

Hoping for some help currently it just shows a white screen but when I replace the first to lines with:

[[myScrollView layer] addSublayer: layer];

I get an animation that plays but now zooming goodness.

Any help would be appreciated.

EDIT: In summary what I am trying to do is is have a CAKeyFrameAination inside of a layer inside of a UIView inside of a UIScrollView. The reason for this packing is because I need an Animation that can stop start and zoom in. the First three lines of code produce a blank white screen but when I replace them with the last bit where I'm putting the layer on myScrollView it plays but as expected I get no zooming as

-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {

is expecting an UIView and doesn't work if I tell it to expect a layer. Hope this is clearer.

I don't think what you are asking is clear. Can you reword your question in greater detail? — Kyle
Is it just a typo on the question that you use myUIView on the first line and myView on the second, or is that your problem? — ughoavgfhw

Mytheral Mytheral · Accepted Answer · 2011-02-01T14:19:18

I thought I was adding the UIView in via code but apparently I needed to add it in via the IB and link it up to the code.

iOS - Using addSubView on a UIScrollView

1 Answers