iOS 手势操作

    //捏合手势

    UIPinchGestureRecognizer *pin = [[UIPinchGestureRecognizeralloc]initWithTarget:selfaction:@selector(run:)];

    [_viewwaddGestureRecognizer:pin];

    

    //旋转手势

    UIRotationGestureRecognizer *rol = [[UIRotationGestureRecognizeralloc]initWithTarget:selfaction:@selector(rotationg:)];

    [_viewwaddGestureRecognizer:rol];

    

    //拖的手势

    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizeralloc]initWithTarget:selfaction:@selector(pan:)];

    [_viewwaddGestureRecognizer:pan];

    //长按手势

    UILongPressGestureRecognizer *longp = [[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(longf:)];

    [_viewwaddGestureRecognizer:longp];

    

    

}

-(void)longf:(UILongPressGestureRecognizer *)sender

{

    

    CGFloat scale ;

    if (_vieww.tag ==0) {

        

        scale =2.0;

        _vieww.tag =1;

    }

    else

    {

        scale =0.5;

        _vieww.tag =0;

    }

    

        sender.view.transform =CGAffineTransformScale(sender.view.transform,scale,scale);

    

}

-(void)run:(UIPinchGestureRecognizer *)sender

{

    sender.view.transform =CGAffineTransformScale(sender.view.transform, sender.scale,sender.scale );

    sender.scale =1.0f;

    

}

-(void)rotationg:(UIRotationGestureRecognizer *)sender

{

    sender.view.transform =CGAffineTransformRotate(sender.view.transform, sender.rotation );

    sender.rotation =0.0f;

}

-(void)pan:(UIPanGestureRecognizer *)sender

{

    if (sender.state ==UIGestureRecognizerStateChanged) {

        [_viewwsetCenter:[sender locationInView:self.view]];

    }elseif (sender.state ==UIGestureRecognizerStateEnded)

    {

        _vieww.backgroundColor = [UIColoryellowColor];

    }

}