Swift - Tinder effect

Question

How can I achieve Tinder effect in Swift?

I mean, I have an image and want to accept if I swipe to right and reject if I swipe to left.

I can do it with the

Answer 1

Try this:

https://github.com/cwRichardKim/TinderSimpleSwipeCards

You can find a better solution here with rotation. See DraggableView.m

-(void)beingDragged:(UIPanGestureRecognizer *)gestureRecognizer
{
    //%%% this extracts the coordinate data from your swipe movement. (i.e. How much did you move?)
    xFromCenter = [gestureRecognizer translationInView:self].x; //%%% positive for right swipe, negative for left
    yFromCenter = [gestureRecognizer translationInView:self].y; //%%% positive for up, negative for down

    //%%% checks what state the gesture is in. (are you just starting, letting go, or in the middle of a swipe?)
    switch (gestureRecognizer.state) {
            //%%% just started swiping
        case UIGestureRecognizerStateBegan:{
            self.originalPoint = self.center;
            break;
        };
            //%%% in the middle of a swipe
        case UIGestureRecognizerStateChanged:{
            //%%% dictates rotation (see ROTATION_MAX and ROTATION_STRENGTH for details)
            CGFloat rotationStrength = MIN(xFromCenter / ROTATION_STRENGTH, ROTATION_MAX);

            //%%% degree change in radians
            CGFloat rotationAngel = (CGFloat) (ROTATION_ANGLE * rotationStrength);

            //%%% amount the height changes when you move the card up to a certain point
            CGFloat scale = MAX(1 - fabsf(rotationStrength) / SCALE_STRENGTH, SCALE_MAX);

            //%%% move the object's center by center + gesture coordinate
            self.center = CGPointMake(self.originalPoint.x + xFromCenter, self.originalPoint.y + yFromCenter);

            //%%% rotate by certain amount
            CGAffineTransform transform = CGAffineTransformMakeRotation(rotationAngel);

            //%%% scale by certain amount
            CGAffineTransform scaleTransform = CGAffineTransformScale(transform, scale, scale);

            //%%% apply transformations
            self.transform = scaleTransform;
            [self updateOverlay:xFromCenter];

            break;
        };
            //%%% let go of the card
        case UIGestureRecognizerStateEnded: {
            [self afterSwipeAction];
            break;
        };
        case UIGestureRecognizerStatePossible:break;
        case UIGestureRecognizerStateCancelled:break;
        case UIGestureRecognizerStateFailed:break;
    }
}