Drag UIButton using finger [duplicate] - objective-c

Question

This question already has answers here:
How to allow a user to move a button via iOS sdk
(3 answers)
Closed 9 years ago.
I want to move a UIButton in my app using dragging.
The UIButton is created using code.
How can I do that?

Answer 1

you can achieve this in following way:
you can use touchesMoved gesture or use UIPanGestureRecognizer
1) using touchesMoved:
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:self];
placardView.center = location;
return;
}
2) using UIPanGestureRecognizer
add a gesture recognizer to the button on viewDidLoad as follows:
UIPanGestureRecognizer *objGesture= [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(moveButton:)];
[myButton addGestureRecognizer:objGesture];
[objGesture release];
write the target Method to be called
-(void)moveButton:(UIPanGestureRecognizer *)recognizer
{
if (recognizer.state == UIGestureRecognizerStateChanged ||
recognizer.state == UIGestureRecognizerStateEnded) {
UIView *draggedButton = recognizer.view;
CGPoint translation = [recognizer translationInView:self.view];
CGRect newButtonFrame = draggedButton.frame;
newButtonFrame.origin.x += translation.x;
newButtonFrame.origin.y += translation.y;
draggedButton.frame = newButtonFrame;
[recognizer setTranslation:CGPointZero inView:self.view];
}
}

Answer 2

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint pt = [[touches anyObject] locationInView:self];
button.center = pt;
}

Answer 3

Try using panGestureRecognizer or by using the touches methods.
click here for more reference.