Pan an UIImageView in background?

Question

I'm trying to realize an app that requires to move an UIImageView, that is put behind a transparent grid. How can I make it? This is the code:

[[self view] addSubview:myimage];
myimage.userInteractionEnabled = YES;
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
[panGesture setDelegate:self];
[myimage addGestureRecognizer:panGesture];
[self.view addSubview:over];

The transparent layer is "over". If it is not added to the view, my pan method works. When I add it, nothing works. So, how can I move my image behind the transparent grid? Thank you everybody.

in your case add panGestures to over view and handle the moving functionality. — Balu, Apr 29 '13 at 09:07

score 1 · Accepted Answer · answered Apr 29 '13 at 09:08

1

make over not clickable by setting userInteraction to no

if that doesn't work for some reason, use a custom class for over and override pointInside to always return NO :D

answered Apr 29 '13 at 09:08

Daij-Djan

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score 0 · Answer 2 · answered Apr 29 '13 at 09:22

You can add aUIImageView as transparent layer over your image, and as UIImageView have by default userInteractionDisabled don't change that.

It's because if overlay image have user interaction then that would not let that pass to background view but 'll consume touches. Hence to enable panning on back ground view you need to pass touches on that view. By some approach. One of those is what I told you.

Pan an UIImageView in background?

2 Answers2