iosobjective-cuipangesturerecognizeruitouchtouchesbegan

How to get current touch point and previous touch point in UIPanGestureRecognizer method?

I am new to iOS, I am using UIPanGestureRecognizer in my project. In which I have a requirement to get current touch point and previous touch point when I am dragging the view. I am struggling to get these two points.

If I use touchesBegan method Instead of using UIPanGestureRecognizer, I could get these two points by the following code:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    CGPoint touchPoint = [[touches anyObject] locationInView:self];
    CGPoint previous=[[touches anyObject]previousLocationInView:self];
}

I need to get these two points in UIPanGestureRecognizer event fire method. How can I achieve this? please guide me.

Solution

  • You can use this:

    CGPoint currentlocation = [recognizer locationInView:self.view];

    Store previous location by setting current location if not found and adding current location everytime.

    previousLocation = [recognizer locationInView:self.view];