- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
//UIGestureRecognizer 手势识别器
// 手势 :有规律的触摸
// UIGestureRecognizer 抽象类
//七种手势:轻拍(tap) 长按(longPress) 旋转(rotation)
//捏合(pinch) 拖拽(pan) 轻扫(swipe) 屏幕边缘拖拽(screenEdgePan)
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
imgView.center = self.view.center;
imgView.image = [UIImage imageNamed:@"spurs.jpg"];
[self.view addSubview:imgView];
[imgView release];
//打开用户交互
imgView.userInteractionEnabled = YES;
#if 0 /*轻拍tap*/
// 创建对象
//获取到轻拍手势时 让self 调用tapAction:方法
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];
//添加手势
[imgView addGestureRecognizer:tap];
//内存管理
[tap release];
//点击次数 几次才能识别
tap.numberOfTapsRequired = 2;
//手指个数
tap.numberOfTouchesRequired = 2;
#endif
#if 0/* 长按 longPress*/
UILongPressGestureRecognizer *tap1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction1:)];
[imgView addGestureRecognizer:tap1];
[tap1 release];
//长按时间
tap1.minimumPressDuration = 1;
#endif
#if 0
/*旋转rotation*/
UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationAction:)];
[imgView addGestureRecognizer:rotation];
[rotation release];
#endif
#if 0
/*捏合pinch*/
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchAction:)];
[imgView addGestureRecognizer:pinch];
[pinch release];
#endif
#if 1
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];
[imgView addGestureRecognizer:pan];
[pan release];
}
#endif
#pragma mark - 轻拍tap
-(void)tapAction:(UITapGestureRecognizer *)tap{
NSLog(@"轻拍");
}
-(void)tapAction1:(UILongPressGestureRecognizer *)tap1{
//长安手势是很多手势的基础
//通过状态区分
if (tap1.state == UIGestureRecognizerStateBegan) {
NSLog(@"长按");
}
}
#pragma mark - 旋转rotation
-(void)rotationAction:(UIRotationGestureRecognizer *)rotation{
//UIView transform 属性 专门用来进行形变(位置position/ 旋转rotation/ 缩放scale)设置
//获取当前手势触发的视图
//强制类型转换(UIImageView *)
UIImageView *imgView = (UIImageView *)rotation.view;
//设置transform实现旋转
imgView.transform = CGAffineTransformMakeRotation(rotation.rotation);
NSLog(@"旋转");
}
#pragma mark - 捏合pinch
-(void)pinchAction:(UIPinchGestureRecognizer *)pinch{
//获取
UIImageView *imgView = (UIImageView *)pinch.view;
//缩放scale(比例)
imgView.transform = (CGAffineTransformScale(imgView.transform, pinch.scale, pinch.scale));
pinch.scale = 1;
NSLog(@"捏合");
}
#pragma mark - 拖拽pan
-(void)panAction:(UIPanGestureRecognizer *)pan{
NSLog(@"拖拽");
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
