I want to zoom out image to original size after scroll slider. I'm using REPagedScrollView library to implement slider. I have 5 images in slider. Now zoom-in 1st image and then immediately scroll slider to view 2nd image. Then go back to view 1st image. 1st image not zooming out. That image was still in zoom - in mode. How can i solved this.
Thanks in advance.
I'm using this below code.
-(void)slideShow
{
[scrollView removeFromSuperview];
scrollView = [[REPagedScrollView alloc] initWithFrame:self.scrollVw.bounds];
scrollView.delegate=self;
scrollView.pageControl.pageIndicatorTintColor=[UIColor clearColor];
scrollView.pageControl.currentPageIndicatorTintColor=[UIColor clearColor];
current_page=0;
for(int i=0;i<[self.PhotoImgArr count];i++){
// Image view
image_scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,self.scrollVw.frame.size.width,self.scrollVw.frame.size.height)];
self.image_view = [[AsyncImageView alloc] initWithFrame:CGRectMake(0,0, image_scroll.frame.size.width, image_scroll.frame.size.height)];
self.image_view.backgroundColor=[UIColor clearColor];
// self.image_view.contentMode = UIViewContentModeScaleAspectFit;
self.image_view.clipsToBounds = true;
self.image_view.userInteractionEnabled = YES;
//self.image_view.image=[UIImage imageNamed:@"Stars"];
self.image_view.imageURL =[NSURL URLWithString:[self.PhotoImgArr objectAtIndex:i]];
doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
[doubleTap setNumberOfTapsRequired:2];
[self.image_view addGestureRecognizer:doubleTap];
// twoFingerPinch = [[UIPinchGestureRecognizer alloc]
// initWithTarget:self
// action:@selector(twoFingerPinch:)];
// [self.image_view addGestureRecognizer:twoFingerPinch];
[image_scroll setDelegate:self];
[image_scroll setShowsHorizontalScrollIndicator:NO];
[image_scroll setShowsVerticalScrollIndicator:NO];
image_scroll.tag=i+1;
// image_scroll.backgroundColor=[UIColor purpleColor];
image_scroll.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
self.image_view.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
image_scroll.contentSize = CGSizeMake(self.image_view.bounds.size.width-500, self.image_view.bounds.size.height-300);
image_scroll.decelerationRate = UIScrollViewDecelerationRateFast;
[image_scroll setMaximumZoomScale:4.0];
// image_scroll.minimumZoomScale = 1.0;
[image_scroll setZoomScale:[image_scroll minimumZoomScale]];
//image_scroll.zoomScale = 1.0;
[image_scroll addSubview:self.image_view];
[scrollView addPage:image_scroll];
}
scrollView.autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
scrollView.tag=0;
[self.scrollVw addSubview:scrollView];
[scrollView scrollToPageWithIndex:self.selected_index animated:YES];
}
- (void)twoFingerPinch:(UIPinchGestureRecognizer *)recognizer
{
NSLog(@"twoFingerPinch");
float newScale = [image_scroll zoomScale] / 2.0;
CGRect zoomRect = [self zoomRectForScale:newScale withCenter:[recognizer locationInView:recognizer.view]];
[image_scroll zoomToRect:zoomRect animated:YES];
}
- (void)handleDoubleTap:(UIGestureRecognizer *)gestureRecognizer {
// zoom in
NSLog(@"handleDoubleTap");
UIScrollView *imageScroll = (UIScrollView *)[self.view viewWithTag:self.selected_index+1];
float newScale = [imageScroll zoomScale] * 2.0;
if (newScale > imageScroll.maximumZoomScale){
newScale = imageScroll.minimumZoomScale;
CGRect zoomRect = [self zoomRectForScale:newScale withCenter:[gestureRecognizer locationInView:gestureRecognizer.view]];
[imageScroll zoomToRect:zoomRect animated:YES];
}
else{
newScale = imageScroll.maximumZoomScale;
CGRect zoomRect = [self zoomRectForScale:newScale withCenter:[gestureRecognizer locationInView:gestureRecognizer.view]];
[imageScroll zoomToRect:zoomRect animated:YES];
}
}
#pragma mark Utility methods
- (CGRect)zoomRectForScale:(float)scale withCenter:(CGPoint)center {
CGRect zoomRect;
// the zoom rect is in the content view's coordinates.
// At a zoom scale of 1.0, it would be the size of the imageScrollView's bounds.
// As the zoom scale decreases, so more content is visible, the size of the rect grows.
zoomRect.size.height = [image_scroll frame].size.height / scale;
zoomRect.size.width = [image_scroll frame].size.width / scale;
// choose an origin so as to get the right center.
zoomRect.origin.x = center.x - (zoomRect.size.width / 2.0);
zoomRect.origin.y = center.y - (zoomRect.size.height / 2.0);
return zoomRect;
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView1
{
UIScrollView *imageScroll = (UIScrollView *)[self.view viewWithTag:self.selected_index+1];
if(scrollView1.tag ==0){
CGFloat pageWidth = scrollView1.frame.size.width;
current_page = floor((scrollView1.contentOffset.x - pageWidth / 2.0) / pageWidth) + 1;
self.selected_index=current_page;
self.lblHeader.text=[NSString stringWithFormat:@"%ld of %lu",self.selected_index+1,(unsigned long)[self.PhotoImgArr count]];
}
else
{
CGFloat offsetX = (imageScroll.bounds.size.width > imageScroll.contentSize.width)?
(imageScroll.bounds.size.width - imageScroll.contentSize.width) * 0.5 : 0.0;
CGFloat offsetY = (imageScroll.bounds.size.height > imageScroll.contentSize.height)?
(imageScroll.bounds.size.height - imageScroll.contentSize.height) * 0.5 : 0.0;
[scrollView1.subviews objectAtIndex:0].center = CGPointMake(imageScroll.contentSize.width * 0.5 + offsetX,imageScroll.contentSize.height * 0.5 + offsetY);
}
}
-(UIView *) viewForZoomingInScrollView:(UIScrollView *)scrollView1
{
if([scrollView1.subviews count]>0){
return [scrollView1.subviews objectAtIndex:0];
}
return nil;
}
