The zoom for uiscrollview isn't working

Question

I don\'t understand why the scrollview isn\'t working, because I followed advices from tutorials.

I created the UIScrollView that contains an UIImageV

Answer 1

You need to return imgv in your delegate method viewForZoomingInScrollView::

- (UIView *) viewForZoomingInScrollView:(UIScrollView *) view {
    return imgv;
}

Answer 2

You have to add the imageView as a subview to the scrollview

[scrollView addSubview:imgv];

Answer 3

I believe you are forgetting to set the frame of your imageView properly

self.imageView.frame=CGRectMake(0, 0, self.imageView.image.size.width, self.imageView.image.size.height);