pan gesture recognise button issue - objective-c

Question

I set a pan gesture recogniser to recognise my touch on some buttons and am running into the following issue. I am trying to add an action to each of the buttons. I'm testing this by telling each different button to become highlighted when I touch them. So far when I keep my finger pressed on the screen en slide around only button1 and button2 show up (as written in the code).
But for some reason I can still see other buttons highlight the same way when I press them individually. Any idea how to solve this so that they only respond to. If button.tag == 3 etc.. Then respond? Here is the code. (This is all the code in the project and a few buttons in the interface builder.)
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Add Gesture to track the finger
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handlePanGesture:)];
[self.view addGestureRecognizer:pan];
}
- (void)handlePanGesture:(UIPanGestureRecognizer *)gesture
{
if (gesture.state == UIGestureRecognizerStateChanged) {
CGPoint point = [gesture locationInView:self.view];
for (UIButton *button in [self.view subviews]) {
if ([button isKindOfClass:[UIButton class]]) {
if (button.tag == 1) {
button.highlighted = CGRectContainsPoint(button.frame, point);
} else if (button.tag == 2) {
button.highlighted = CGRectContainsPoint(button.frame, point);
} //
}
}
}
else if (gesture.state == UIGestureRecognizerStateEnded)
{
for (UIButton *button in [self.view subviews]) {
if ([button isKindOfClass:[UIButton class]]) {
button.highlighted = NO;
}
}
}
}
EDIT :
[[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handlePanned:)];
- (void)handlePanned:(UIPanGestureRecognizer*)thePanner{
if (thePanner.state == UIGestureRecognizerStateChanged ){
//disable button
}else if (thePanner.state == UIGestureRecognizerStateEnded) {
//enable button
}else if ( thePanner.state == UIGestureRecognizerStateFailed ){
//enable button
}
}

Answer 1

You aren't checking to see if where you are touching is where a button is located.
Quickest solution I see is:
Create properties for each of your buttons, we'll call them button1, button2 and button3.
Create your panGestureRecognizer
- (void)viewDidLoad
{
[super viewDidLoad];
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handlePanGesture:)];
[self.view addGestureRecognizer:pan];
}
Your method to handle the pan:
-(void)handlePanGesture:(UIPanGestureRecognizer *)gesture
{
//create a CGpoint so you know where you are touching
CGPoint touchPoint = [gesture locationInView:self.view];
//just to show you where you are touching...
NSLog(#"%#", NSStringFromCGPoint(touchPoint));
//check your button frame's individually to see if you are touching inside it
if (CGRectContainsPoint(self.button1.frame, touchPoint))
{
NSLog(#"you're panning button1");
}
else if(CGRectContainsPoint(self.button2.frame, touchPoint))
{
NSLog(#"you're panning button2");
}
else if (CGRectContainsPoint(self.button3.frame, touchPoint))
{
NSLog(#"you're panning button3");
}
And that should be it.