scale, rotate and move with UIGestureRecognizer simultaneously - ios

Question

I can't find out why my scale, rotate and move won't work at the same time..
I have looked at a lot of examples and i can't seem to find the problem.
firstly I thought that is was a gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer problem, but it wasn't please help :)
here is my code:
#implementation StoryEditorPageHolderView
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
- (id)initWithProperty:(Property *)property scale:(CGFloat)scaleFactor pos:(CGPoint)point dustbin:(DustbinView *)dustBin{
self = [super initWithFrame:CGRectZero];
if(self){
self.imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:property.imageName]];
self.frame = CGRectMake(0, 0, self.imageView.frame.size.width, self.imageView.frame.size.height);
[self addSubview:_imageView];
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(scale:)];
[self addGestureRecognizer:pinchRecognizer];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:#selector(rotate:)];
[self addGestureRecognizer:rotationRecognizer];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[self addGestureRecognizer:panRecognizer];
UITapGestureRecognizer *tapProfileImageRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapped:)];
[tapProfileImageRecognizer setNumberOfTapsRequired:2];
[self addGestureRecognizer:tapProfileImageRecognizer];
}
return self;
}
- (void)rotate:(UIRotationGestureRecognizer *)rotate {
if (rotate.state == UIGestureRecognizerStateBegan) {
prevRotation = 0.0;
}
float thisRotate = rotate.rotation - prevRotation;
prevRotation = rotate.rotation;
self.transform = CGAffineTransformRotate(self.transform, thisRotate);
}
- (void)scale:(UIPinchGestureRecognizer *)pinch {
if (pinch.state == UIGestureRecognizerStateBegan)
prevPinchScale = 1.0;
float thisScale = 1 + (pinch.scale-prevPinchScale);
prevPinchScale = pinch.scale;
self.transform = CGAffineTransformScale(self.transform, thisScale, thisScale);
}
-(void)move:(UIPanGestureRecognizer *)pan {
if (pan.state == UIGestureRecognizerStateBegan){
prevPanPoint = [pan locationInView:self.superview];
}
CGPoint curr = [pan locationInView:self.superview];
float diffx = curr.x - prevPanPoint.x;
float diffy = curr.y - prevPanPoint.y;
CGPoint centre = self.center;
centre.x += diffx;
centre.y += diffy;
self.center = centre;
prevPanPoint = curr;
}
#end
I also have UIGestureRecognizerDelegate as a delegate in the .h file:
#import <Foundation/Foundation.h>
#class Property;
#class DustbinView;
#interface StoryEditorPropertyView : UIView <UIGestureRecognizerDelegate>
#property (strong, nonatomic) UIPanGestureRecognizer *panRecognizer;
#property (strong, nonatomic) UIPinchGestureRecognizer *pinchRecognizer;
#property (strong, nonatomic) UIRotationGestureRecognizer *rotationRecognizer;
#property (strong, nonatomic) UITapGestureRecognizer *tapProfileImageRecognizer;
#property (strong, nonatomic) UIImageView *imageView;
#property (strong, nonatomic) Property *property;
#property (nonatomic) CGPoint pointBegin;
#property (nonatomic) bool isRemoveable;
#property (nonatomic) CGFloat beginScale;
#property (strong, nonatomic) DustbinView *dustBin;
- (id)initWithProperty:(Property *)property scale:(CGFloat)scaleFactor pos:(CGPoint)point dustbin:(DustbinView *)dustBin;
#end

Answer 1

This worked for me:
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(scale:)];
pinchRecognizer.delegate = self;
[self addGestureRecognizer:pinchRecognizer];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:#selector(rotate:)];
pinchRecognizer.delegate = self;
[self addGestureRecognizer:rotationRecognizer];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(move:)];
pinchRecognizer.delegate = self;
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[self addGestureRecognizer:panRecognizer];

Answer 2

ok, what you're doing wrong is not adding an object for the UIGestureRecognizer to adapt to. For example, you have the
UITapGestureRecognizer *tapProfileImageRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapped:)];
[tapProfileImageRecognizer setNumberOfTapsRequired:2];
[self addGestureRecognizer:tapProfileImageRecognizer];
This is exactly what you need except this line
[self addGestureRecognizer:tapProfileImageRecognizer];
this is adding the gesture onto the class. you need an OBJECT :)
so just do this
[self.view addGestureRecognizer:tapProfileImageRecognizer];
for all your gestures, and it should work :)
You always have to make sure you're adding onto the object, not the class
Hope this helps!!
EDIT:
Putting UIGestureRecognizers onto UIView is the way that you would do what you are doing. What you need to do now is go under Xcode,
file -> new file
make a UIViewController subclass
make sure that name it...
under your .xib file, find this:
Then, if you look at where the UIView is, click that. This will bring up the UIView attributes panel. Travel over to the little button that has the i in the circle. It's the blue one under the Attributes panel. Click that, and you should see this:
Where you see the box that says 'UIView'
That is where you type your subclass of UIView.
That should help with any of the issues you have been having. Hope that helps! :)

Answer 3

adding gesture code you should put in viewDidLoad not in init method and add gesture in view(self.view) not in object(self) itself .
try as follow I made some changes
-(void) viewDidLoad
{
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(scale:)];
[self.view addGestureRecognizer:pinchRecognizer];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:#selector(rotate:)];
[self.view addGestureRecognizer:rotationRecognizer];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[self.view addGestureRecognizer:panRecognizer];
UITapGestureRecognizer *tapProfileImageRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapped:)];
[tapProfileImageRecognizer setNumberOfTapsRequired:2];
[self.view addGestureRecognizer:tapProfileImageRecognizer];
}