moving a UIImageView one at a time using UIPanGestureRecognizer - objective-c

Question

I have some questions about using a UIPanGestureRecognizer. Is it possible to use it in moving a UIImageView one at a time.
The flow is like this. I have 2 images. image A and B. If you select image A,image B cannot be moved?.
Thanks guys.

Answer 1

you can set UIPanGestureRecognizer for particular UIImageView object only.
//set UIPanGestureRecognizer for first image
UIPanGestureRecognizer *panRecognizer1 = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(moveImage1:)];
[panRecognizer1 setMinimumNumberOfTouches:1];
[panRecognizer1 setMaximumNumberOfTouches:1];
[panRecognizer1 setDelegate:self];
[img1 addGestureRecognizer:panRecognizer1];
//set UIPanGestureRecognizer for second image
UIPanGestureRecognizer *panRecognizer2 = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(moveImage2:)];
[panRecognizer2 setMinimumNumberOfTouches:1];
[panRecognizer2 setMaximumNumberOfTouches:1];
[panRecognizer2 setDelegate:self];
[img1 addGestureRecognizer:panRecognizer2];
and write two method for image moving
-(void)moveImage1:(id)sender {
//coding for moving first image
[[[(UITapGestureRecognizer*)sender view] layer] removeAllAnimations];
[viewGesture bringSubviewToFront:[(UIPanGestureRecognizer*)sender view]];
CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self.view];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) {
firstX = [[sender view] center].x;
firstY = [[sender view] center].y;
}
translatedPoint = CGPointMake(firstX+translatedPoint.x, firstY+translatedPoint.y);
[[sender view] setCenter:translatedPoint];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
CGFloat finalX = translatedPoint.x + (.04*[(UIPanGestureRecognizer*)sender velocityInView:viewGesture].x);
CGFloat finalY = translatedPoint.y + (.04*[(UIPanGestureRecognizer*)sender velocityInView:viewGesture].y);
if(UIDeviceOrientationIsPortrait([[UIDevice currentDevice] orientation])) {
if(finalX < -5000) { finalX = 0; }
else if(finalX > 5000) { finalX = 320; }
if(finalY < -5000) { finalY = 0; }
else if(finalY > 5000) { finalY = 460; }
}
else {
if(finalX < -5000) { finalX = 0; }
else if(finalX > 5000) { finalX = 320;}
if(finalY < -5000) { finalY = 0; }
else if(finalY > 5000) { finalY = 460; }
}
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:.35];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
[[sender view] setCenter:CGPointMake(finalX, finalY)];
[UIView commitAnimations];
}
}
-(void)moveImage2:(id)sender {
//coding for moving second image
}
and also see this with uicollectionview