Código esto en vista de la carga tenía o la función de crear imageview: m_ctrlImgVwShowImage - su imageview de
UIRotationGestureRecognizer *rotationRecognizer = [[[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)] autorelease];
[rotationRecognizer setDelegate:self];
[m_ctrlImgVwShowImage addGestureRecognizer:rotationRecognizer];
//lastRotation is a cgfloat member variable
-(void)rotate:(id)sender {
if([(UIRotationGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
_lastRotation = 0.0;
return;
}
CGFloat rotation = 0.0 - (_lastRotation - [(UIRotationGestureRecognizer*)sender rotation]);
CGAffineTransform currentTransform = m_ctrlImgVwShowImage.transform;
CGAffineTransform newTransform = CGAffineTransformRotate(currentTransform,rotation);
[m_ctrlImgVwShowImage setTransform:newTransform];
_lastRotation = [(UIRotationGestureRecognizer*)sender rotation];
}
¿Qué has hecho hasta ahora? ¿Ha leído esta guía ?: http://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/GestureRecognizers/GestureRecognizers.html#//apple_ref/doc/uid/TP40009541-CH6-SW1 – bandejapaisa
usted puede referirse a los siguientes enlaces, http://stackoverflow.com/questions/3448614/uiimageview-gestures-zoom-rotate-question, http://www.icodeblog.com/2010/10/14/working-with-uigesturerecognizers/ – rishi