CODEWITHSUNDEEP
iosuiscrollviewuiimageviewxibcustom-view
NDY
NDY

Reputation: 3557

Change custom UIView to UIScrollView

In general: I got a custom UIView with a xib file as subview on a UIViewController. I add the subview programmatically in my controller.

In my UIViewController:

NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"MyCustomSubView" owner:self  options:nil];
mySubView = [subviewArray objectAtIndex:0];
...
[self.view addSubview:mapView];

Because I need to scroll on this subview, which also have an UIImageView on it, I decided to change my custom UIView into an UIScrollView.

I did the following steps:

These were my total steps I think. But as example, the viewForZoomingInScrollView method wasn't called. Also I tried to zoom in, but nothing happened.

Anyone an idea, what could be wrong?

Upvotes: 1

Views: 800

Answers (1)

ravron
ravron

Reputation: 11221

Looking briefly at the UIScrollView Class Reference page, I see the following:

The UIScrollView class can have a delegate that must adopt the UIScrollViewDelegate protocol. For zooming and panning to work, the delegate must implement both viewForZoomingInScrollView: and scrollViewDidEndZooming:withView:atScale:; in addition, the maximum (maximumZoomScale) and minimum ( minimumZoomScale) zoom scale must be different.

You mentioned implementing viewForZoomingInScrollView:, but not scrollViewDidEndZooming:atScale:, nor did you mention setting maximumZoomScale or minimumZoomScale. Try doing those things, and check back if you're still having issues.

Upvotes: 2

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