-(void)viewDidLoad
{
[super viewDidLoad];
imageView=[[UIImageView alloc] initWithFrame:CGRectMake(100, 150, 120, 120)];
imageView.image=[UIImage imageNamed:@"2.jpg"];
[self.view addSubview:imageView];
[imageView release];
imageView.userInteractionEnabled=YES;
//-----添加手势——点击
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];//tap
:点击|gesture:手势|Recognizer：承认者/响应者
[imageView addGestureRecognizer:tap];
tap.numberOfTapsRequired=2;//需要点击几次?
required:需求
tap.numberOfTouchesRequired=2;//几个触点啊？ touches:触点
[tap release];
//-----添加手势——平移
UIPanGestureRecognizer *pan=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];//pan:
[imageView addGestureRecognizer:pan];
[pan release];
//------添加手势——旋转
UIRotationGestureRecognizer * rotation=[[UIRotationGestureRecognizer alloc] initWithTarget:selfaction:@selector(rotation:)];//Rotation:旋转
[imageView addGestureRecognizer:rotation];
//------添加手势——收缩
UIPinchGestureRecognizer *pinch=[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];
[imageView addGestureRecognizer:pinch];
[pinch release];
[rotation release];
}
//收缩实现——//bounds:界限 |scale
:比例 友情提示，bounds 中心点不改变X,Y轴的距离，只改变长宽。
-(void)pinch:(UIPinchGestureRecognizer *)pinch
{
imageView.bounds=CGRectMake(0, 0, imageView.bounds.size.width*pinch.scale,imageView.bounds.size.height*pinch.scale);//bounds:界限 |scale
:比例 友情提示，bounds 中心点不改变X,Y轴的距离，只改变长宽。
pinch.scale=1.0;
}
-(void)pan:(UIPanGestureRecognizer *)pan
{
CGPoint point=[pan translationInView:self.view];//
translation :平移 获取相对坐标原点的坐标
NSLog(@"%f,%f",point.x,point.y);
imageView.center=CGPointMake(imageView.center.x+point.x, imageView.center.y+point.y);
[pan setTranslation:CGPointZero inView:self.view];//设置坐标原点位上次的坐标
}
//旋转
-(void)rotation:(UIRotationGestureRecognizer *)rotation
{
imageView.transform=CGAffineTransformMakeRotation(finRotation+rotation.rotation);//transform
:弧度改变 |affine:仿射 弧度改变
if(rotation.state==UIGestureRecognizerStateEnded)//监听响应者的状态，判断是否结束
{
finRotation+=rotation.rotation;//弧度修改
}
NSLog(@"元方你怎么看？%f",rotation.rotation);
}
-(void)tap:(UITapGestureRecognizer *)tap
{
NSLog(@"tap");
}
iOS 手势
原文：http://blog.csdn.net/sun_winter/article/details/45167741
