// 1、轻拍手势识别器的使用
UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleTapGesture:)];
//设置需要轻拍的次数
tapGesture.numberOfTapsRequired=1;
//设置需要触摸的个数：
tapGesture.numberOfTouchesRequired=2;//使用Alt
//添加手势识别器到被作用的视图
[aView addGestureRecognizer:tapGesture];
[tapGesture release];
// 2、创建一个平移手势识别器
UIPanGestureRecognizer *panGesture=[[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanGesture:)]autorelease];
[aView addGestureRecognizer:panGesture];
// 3、创建一个旋转手势识别器
UIRotationGestureRecognizer *rotationGesture=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(handleRotationGesture:)];
[aView addGestureRecognizer:rotationGesture];
// 4、创建一个缩放手势识别器
UIPinchGestureRecognizer *pinchGesture=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(handlePinchGesture:)];
[aView addGestureRecognizer:pinchGesture];//捏合
tapGesture.delegate=self;
rotationGesture.delegate=self;
pinchGesture.delegate=self;
// 5、创建一个长按手势识别器
UILongPressGestureRecognizer *longPressGesture=[[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPressGesture:)]autorelease];
[aView addGestureRecognizer:longPressGesture];
longPressGesture.minimumPressDuration=0.5;
// 6、创建一个轻扫手势识别器
UISwipeGestureRecognizer *swipeGesture=[[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)]autorelease];
[aView addGestureRecognizer:swipeGesture];
swipeGesture.direction=UISwipeGestureRecognizerDirectionDown;
// 7、创建一个屏幕边缘轻扫识别器
UIScreenEdgePanGestureRecognizer *screenEdgeGesture=[[[UIScreenEdgePanGestureRecognizer alloc]initWithTarget:self action:@selector(handlescreenEdgeGesture:)]autorelease];
[self.view addGestureRecognizer:screenEdgeGesture];
screenEdgeGesture.edges=UIRectEdgeLeft;
//当一个手势识别器对象被识别后，会询问代理对象，是否允许同时识别其他手势识别器。如果此协议方法返回yes，表示允许。默认不允许
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
-(void)handlePanGesture:(UIPanGestureRecognizer *)sender{
UIView *aView=sender.view;
//获取手势在视图对应坐标系中产生的位移增量
CGPoint point=[sender translationInView:aView.superview];
//在上次视图形变的基础上产生新的形变
aView.transform=CGAffineTransformTranslate(aView.transform, point.x, point.y);
//将当前产生的增量归零
[sender setTranslation:CGPointZero inView:aView.superview];
}
-(void)handleRotationGesture:(UIRotationGestureRecognizer *)sender{
UIView *aView=sender.view;
aView.transform=CGAffineTransformRotate(aView.transform, sender.rotation);
sender.rotation=0;//将旋转产生的角度增量设置为0；
}
-(void)handlePinchGesture:(UIPinchGestureRecognizer *)sender{
UIView *aView=sender.view;
aView.transform=CGAffineTransformScale(aView.transform, sender.scale, sender.scale);
sender.scale=1;
}