Rotating UIImageView more than 180 degrees using animations on iOS - ios

Question

Im trying to animate a moving meter by rotating it more than 180 degrees, but it wont work. Im using CGAffineTransform to rotate the meter, which uses a net result to make the rotation. This means that i cannot choose CW or CCW rotation when using this function. How can I modified this code to make it rotate 4 radians. Currently the rotation is transformed to a net result, making the rotation minimal.
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.25];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
CGAffineTransform transform = CGAffineTransformMakeRotation(4);
self.meter.transform = transform;
[UIView commitAnimations];
EDIT:
From the answers i managed to get it working by doing this
[UIView animateWithDuration:1.5 animations:^{
CABasicAnimation *fullRotation;
fullRotation = [CABasicAnimation animationWithKeyPath:#"transform.rotation"];
fullRotation.fromValue = [NSNumber numberWithFloat:0];
fullRotation.toValue = [NSNumber numberWithFloat:((330*M_PI)/180)];
fullRotation.duration = 2.0f;
fullRotation.repeatCount = 1;
fullRotation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
fullRotation.fillMode = kCAFillModeForwards;
fullRotation.removedOnCompletion = NO;
// add animation in your view
[self.meter.layer addAnimation:fullRotation forKey:#"330"];
[self performSelector:#selector(stopRotate:) withObject:self.meter afterDelay:2.0];
}];

Answer 1

//Add This in header prefix
#define MAXFLOAT 0x1.fffffep+127f
// add For rotation
[UIView animateWithDuration:1.5 animations:^{
CABasicAnimation *fullRotation;
fullRotation = [CABasicAnimation animationWithKeyPath:#"transform.rotation"];
fullRotation.fromValue = [NSNumber numberWithFloat:0];
fullRotation.toValue = [NSNumber numberWithFloat:(2*M_PI))];
fullRotation.duration =1.0f;
fullRotation.repeatCount = MAXFLOAT;
// add animation in your view
[yourView.layer addAnimation:fullRotation forKey:#"360"];
[self performSelector:#selector(stopRotate:) withObject:yourView afterDelay:1.0];
}];
And Add this code to stop rotation From view
-(void)stopRotate :(UIView *)yourView
{
[yourView.layer removeAnimationForKey:#"360"];
}

Answer 2

Try this, just change the basic properties to match your requirements:
CATransform3D rotationTransform = CATransform3DMakeRotation(((4) * (180.0 / M_PI)), 0, 0, 1.0);
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:#"transform"];
rotationAnimation.toValue = [NSValue valueWithCATransform3D:rotationTransform];
rotationAnimation.duration = 0.6f;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = 1;
//Add this two lines
rotationAnimation.fillMode = kCAFillModeForwards;
rotationAnimation.removedOnCompletion = NO;
[self.meter.layer addAnimation:rotationAnimation forKey:#"rotationAnimation"];
Let me know is it works for you.

Answer 3

You need to convert the radian to degree using the following macro:
#define RADIANS_TO_DEGREES(radians) ((radians) * (180.0 / M_PI))
and pass the value to the function:
-(UIImage*)rotateImage:(UIImage*)img forAngle:(CGFloat)degree {
UIView *rotatedViewBox = [[UIView alloc]initWithFrame:CGRectMake(0, 0, img.size.width, img.size.height)];
CGAffineTransform t = CGAffineTransformMakeRotation(degree);
rotatedViewBox.transform = t;
CGSize rotatedSize = rotatedViewBox.frame.size;
UIGraphicsBeginImageContext(rotatedSize);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(context, rotatedSize.width, rotatedSize.height);
CGContextRotateCTM(context, radian);
CGContextScaleCTM(context, 1.0, -1.0);
CGContextDrawImage(context, CGRectMake(-img.size.width, -img.size.height, img.size.width, img.size.height), img.CGImage);
UIImage *returnImg = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return returnImg;
}