简单的一些手势 

- (void)viewDidLoad{    [super viewDidLoad];    _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(110, 160, 100, 150)];    _imageSize = CGSizeMake(100, 150);    _imageView.image = [UIImage imageNamed:@"10_0.jpg"];    [self.view addSubview:_imageView];    [_imageView release];    _imageView.userInteractionEnabled = YES;        //长按    UILongPressGestureRecognizer* longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];    //最短时间    //longPress.minimumPressDuration = 5.0;    [_imageView addGestureRecognizer:longPress];    [longPress release];        //捏合    UIPinchGestureRecognizer* pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];    [_imageView addGestureRecognizer:pinch];    [pinch release];        //移动    UIPanGestureRecognizer* pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];    [_imageView addGestureRecognizer:pan];    [pan release];        //旋转    UIRotationGestureRecognizer* rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];    [_imageView addGestureRecognizer:rotation];    [rotation release];}//旋转- (void)rotation:(UIRotationGestureRecognizer*)rotation{    _imageView.transform = CGAffineTransformMakeRotation(_rotation + rotation.rotation);    //结束时，保存当前弧度    if (rotation.state == UIGestureRecognizerStateEnded) {        _rotation += rotation.rotation;    }}//移动- (void)pan:(UIPanGestureRecognizer*)pan{    CGPoint point = [pan translationInView:self.view];    //NSLog(@"%@",NSStringFromCGPoint(point));    _imageView.center = CGPointMake(_imageView.center.x + point.x, _imageView.center.y + point.y);    // 100 10    // 110 20 120    // 130    [pan setTranslation:CGPointZero inView:self.view];}//捏合- (void)pinch:(UIPinchGestureRecognizer*)pinch{    //NSLog(@"%f",pinch.scale);    /*     100*100    1.1     110*110    1.2     */    _imageView.bounds = CGRectMake(0, 0, _imageSize.width * pinch.scale, _imageSize.height * pinch.scale);    //判断状态    //当状态等于结束的时候，我们需要保存当前大小作为imageView默认大小    if (pinch.state == UIGestureRecognizerStateEnded) {        _imageSize = _imageView.bounds.size;    }}- (void)longPress:(UILongPressGestureRecognizer*)longpress{    NSLog(@"长按");}