Question

Currently i am using UIRotationGestureRecognizer to rotate my image and my image currently rotating smoothly.

The code which i am using is

   CGFloat imageRotationDegree;

    if ([gesture state] == UIGestureRecognizerStateBegan || [gesture state] == UIGestureRecognizerStateChanged) 
    {
        [gesture view].transform = CGAffineTransformRotate([[gesture view] transform], [gesture rotation]);
        [gesture setRotation:0];
         imageRotationDegree=[gesture rotation];
    }

    NSLog(@"Rotation in Degrees: %f", imageRotationDegree);

So the problem is it is always printing rotation degree as zero.So that i am unable to save the current rotation degree.

Also if i change [gesture setRotation:0]; to some other degree then rotation is not smooth.

So How can i print different rotation degree with smooth rotation.

Answer 1

try with

CGFloat imageRotationDegree;

if ([gesture state] == UIGestureRecognizerStateBegan || [gesture state] == UIGestureRecognizerStateChanged) 
{
    imageRotationDegree = [gesture rotation];
    [gesture view].transform = CGAffineTransformRotate([[gesture view] transform], imageRotationDegree);
    [gesture setRotation:0];
}

NSLog(@"Rotation in Degrees: %f", imageRotationDegree);