UIGesture 平移，滑动，长按手势

//
//  ViewController.m
//  UIWindowsApp
//
//

#import "ViewController.h"
#import "ViewController2.h"

@interface ViewController ()

@end

@implementation ViewController




- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIImage* image = [UIImage imageNamed:@"1.jpg"];
    
    UIImageView* _imageView= [[UIImageView alloc]init];
    
    _imageView.image = image;
    
    _imageView.frame = CGRectMake(50, 100, 220, 300);
    
    //是否开启交互事件响应开关，默认值为NO
    _imageView.userInteractionEnabled = YES;
    
    [self.view addSubview:_imageView];

    //1.创建一个平移手势
    UIPanGestureRecognizer* pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAct:)];

    //将手势添加到视图
    [_imageView addGestureRecognizer:pan];
    
    //将手势从视图移除
    [_imageView removeGestureRecognizer:pan];
    //2.创建一个滑动手势
    UISwipeGestureRecognizer* swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self  action:@selector(swipeAct:)];
    
    //设置滑动手势接收的事件的类型
    
    swipe.direction = UISwipeGestureRecognizerDirectionLeft;
    //UISwipeGestureRecognizerDirectionLeft;
//    swipe.direction = UISwipeGestureRecognizerDirectionDown;
//    swipe.direction = UISwipeGestureRecognizerDirectionRight;
//    swipe.direction = UISwipeGestureRecognizerDirectionLeft;

    [_imageView addGestureRecognizer:swipe];

    //3.创建一个长按事件
    
    UILongPressGestureRecognizer* longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAct:)];
    
    [_imageView addGestureRecognizer:longPress];
    
    //设置长按手势的持续时间，默认是0.5秒
    longPress.minimumPressDuration = 3;

    
}
-(void) longPressAct:(UILongPressGestureRecognizer*) longPress
{
    //到达三秒，触发函数
    if(longPress.state == UIGestureRecognizerStateBegan)
    {
        NSLog(@"长按开始");
    }
    //手指离开屏幕，触发函数
    else if (longPress.state == UIGestureRecognizerStateEnded)
    {
        NSLog(@"长按结束");
    }
    
}




-(void) swipeAct:(UISwipeGestureRecognizer *) swipt
{
    if(swipt.direction & UISwipeGestureRecognizerDirectionLeft)
    {
        NSLog(@"Left");
    }else if (swipt.direction & UISwipeGestureRecognizerDirectionRight)
    {
        NSLog(@"Right");
    }

    
}




-(void) panAct:(UIPanGestureRecognizer*) pan
{
    NSLog(@"pan");
    
    //获取移动的坐标，相对于视图的坐标系
    CGPoint pt = [pan translationInView:self.view];
    
    NSLog(@"x=%.2f , y=%.2f ",pt.x,pt.y);
    
    //获取移动时的相对速度,这个速度是指每秒钟移动的像素的值
    CGPoint pv = [pan velocityInView:self.view];
    
    NSLog(@"pv.x = %.2f,pv.y = %.2f",pv.x,pv.y);
    
    
}



//是否可以同时响应两个手势，yes 可以，no 不可以
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end