How To apply UIGestureRecognizerDelegate On UIView Instead of UIViewController - ios

Question

Hi all I am doing pinch zoom & pan on UIImageView which is inside a UIView for this I have written code which is working fine . My problem is when i am rotation OR pinching the image,it's not rotating OR panning from centre part of images. If i am doing same code on UIViewController this code is working great for Rotation & panning also .Please help me what i have mistaken here
in GestureRecognizer_UIView.h file :
#import <UIKit/UIKit.h>
#interface GestureRecognizer_UIView : UIView<UIGestureRecognizerDelegate>
#property (weak, nonatomic) IBOutlet UIImageView *imageView; #property CGFloat lastRotation;
#end
In GestureRecognizer_UIView.m file
#import "GestureRecognizer_UIView.h"
#implementation GestureRecognizer_UIView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
// Initialization code
}
return self;
}
-(void)awakeFromNib
{
UIRotationGestureRecognizer *rotationG = [[UIRotationGestureRecognizer alloc]
initWithTarget:self action:#selector(rotationImage:)];
rotationG.delegate = self;
UIPinchGestureRecognizer *pinchGestureRecongnizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(changeImage:)];
pinchGestureRecongnizer.delegate = self;
UIPanGestureRecognizer *panGesture=[[UIPanGestureRecognizer alloc]initWithTarget:self action:#selector(panpan:)];
panGesture.delegate = self;
[_imageView addGestureRecognizer:pinchGestureRecongnizer];
[_imageView addGestureRecognizer:rotationG];
[_imageView addGestureRecognizer:panGesture];
}
- (void)panpan:(UIPanGestureRecognizer *)sender {
[self bringSubviewToFront:_imageView];
CGPoint translation = [sender translationInView:self];
CGPoint imageViewPosition = _imageView.center;
imageViewPosition.x += translation.x;
imageViewPosition.y += translation.y;
_imageView.center = imageViewPosition;
[sender setTranslation:CGPointZero inView:self];
}
-(void)rotationImage:(UIRotationGestureRecognizer*)gesture {
[self bringSubviewToFront:gesture.view];
CGPoint location = [gesture locationInView:self];
gesture.view.center = CGPointMake(location.x, location.y);
if ([gesture state] == UIGestureRecognizerStateEnded) {
self.lastRotation = 0;
return;
}
CGAffineTransform currentTransform = _imageView.transform;
CGFloat rotation = 0.0 - (self.lastRotation - gesture.rotation);
CGAffineTransform newTransform = CGAffineTransformRotate(currentTransform, rotation);
_imageView.transform = newTransform;
self.lastRotation = gesture.rotation;
}
- (void)changeImage:(UIPinchGestureRecognizer*)pinchGestureRecognizer {
[self bringSubviewToFront:pinchGestureRecognizer.view];
CGPoint location = [pinchGestureRecognizer locationInView:self];
pinchGestureRecognizer.view.center = CGPointMake(location.x, location.y);
pinchGestureRecognizer.view.transform = CGAffineTransformScale(pinchGestureRecognizer.view.transform, pinchGestureRecognizer.scale, pinchGestureRecognizer.scale);
pinchGestureRecognizer.scale = 1;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
#end