UIImageView *imgView=[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 75, 75)];
imgView.image=[UIImage imageNamed:@"a"];
imgView.tag=200;
[self.view addSubview:imgView];
//设置允许触控和执行手势
imgView.userInteractionEnabled=YES;
//创建点击手势
UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGestureClick:)];
//将创建的点击手势添加到图片对象
[imgView addGestureRecognizer:tap];
//创建拖拽手势
UIPanGestureRecognizer *pan=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panGestureClick:)];
[imgView addGestureRecognizer:pan];
//创建长按手势
UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressGestureClick:)];
[imgView addGestureRecognizer:longPress];
//创建旋转手势
UIRotationGestureRecognizer *rotate=[[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotateGestureClick:)];
[imgView addGestureRecognizer:rotate];
//创建捏合手势
UIPinchGestureRecognizer *pinch=[[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchGestureClick:)];
//捏合手势可以与其他手势同时执行
pinch.delegate=self;
[imgView addGestureRecognizer:pinch];
//创建横扫和纵扫手势
UISwipeGestureRecognizer *hs=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(hsClick:)];
hs.direction=UISwipeGestureRecognizerDirectionLeft|UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:hs];
UISwipeGestureRecognizer *vs=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(vsClick:)];
vs.direction=UISwipeGestureRecognizerDirectionDown|UISwipeGestureRecognizerDirectionUp;
[self.view addGestureRecognizer:vs];
}
-(void)vsClick:(UISwipeGestureRecognizer *)vs
{
NSLog(@"纵扫");
}
-(void)hsClick:(UISwipeGestureRecognizer *)hs
{
NSLog(@"横扫");
}
//当执行捏合手势时调用该方法
-(void)pinchGestureClick:(UIPinchGestureRecognizer *)pinch
{
pinch.view.transform=CGAffineTransformScale(pinch.view.transform, pinch.scale,pinch.scale);
[pinch setScale:1];
}
//当执行旋转手势时调用该方法
-(void)rotateGestureClick:(UIRotationGestureRecognizer *)rotate
{
//roate.rotation手指的旋转弧度
rotate.view.transform=CGAffineTransformRotate(rotate.view.transform, rotate.rotation);
//保持图片和手指为相同弧度
[rotate setRotation:0];
}
//当执行长按时调用该方法
//参数名称.view为被添加手势的对象
-(void)longPressGestureClick:(UILongPressGestureRecognizer*)loginPress
{
loginPress.view.center=self.view.center;
}
//当执行拖拽手势时执行该方法
-(void)panGestureClick:(UIPanGestureRecognizer*)pan
{
//pan.view为手指点击的对象
pan.view.center= [pan locationInView:self.view];
}
//参数为图片的手势类型
-(void)tapGestureClick:(UITapGestureRecognizer *)tap
{
NSLog(@"tap");
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//return YES，允许添加手势的对象多个手势同时执行
//遵守UIGestureRecognizerDelegate协议
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
(触控)
//添加图片到页面上
UIImageView *imgView=[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 75, 75)];
imgView.image=[UIImage imageNamed:@"a"];
[self.view addSubview:imgView];
imgView.tag=100;
//允许当前屏幕支持多点触控
self.view.multipleTouchEnabled=YES;
//允许图片对象支持手势与触控
imgView.userInteractionEnabled=YES;
//设置导航条右侧按钮
UIBarButtonItem *rightBtn=[[UIBarButtonItem alloc]initWithTitle:@"Next" style:UIBarButtonItemStylePlain target:self action:@selector(rightBtnClick:)];
self.navigationItem.rightBarButtonItem=rightBtn;
}
-(void)rightBtnClick:(UIBarButtonItem*)bt
{
_secondController=[[SecondViewController alloc]init];
_secondController.navigationItem.title=@"Gesture";
[self.navigationController pushViewController:_secondController animated:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//触控屏幕时调用该方法
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"touhesBegan");
//获得屏幕上的手指个数
NSLog(@"%i",[touches count]);
}
//当手指在屏幕上滑动调用该方法
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UIImageView *imgView=(UIImageView *)[self.view viewWithTag:100];
for (UITouch *t in touches) {
//t.view获得手指点击的空件对象
if (t.view==imgView) {
//图片根据点到图片上的手指的位置而移动
imgView.center=[t locationInView:self.view];
}
}
NSLog(@"moving");
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"end");
}
