UIGestureRecognizer,手势处理，点击，长按，拖动，左右划动

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView1;

@end

@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];
self.imageView1.userInteractionEnabled=YES;
//1.点击手势
//创建手势实例
UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleTapGesture)];
//设置手势点击数(不设置默认是一次)
//tapGesture.numberOfTapsRequired=2;

//为imageView1添加手势识别
[self.imageView1 addGestureRecognizer:tapGesture];

//2.长按手势
UILongPressGestureRecognizer *longPressGesture=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPressGesture)];
longPressGesture.minimumPressDuration=1.0;
[self.imageView1 addGestureRecognizer:longPressGesture];

//3.拖手势
UIPanGestureRecognizer *panGesture=[[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanGesture:)];
[self.imageView1 addGestureRecognizer:panGesture];

//4.左划手势(整个屏幕给个划动手势)
UISwipeGestureRecognizer *swipeLeftGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)];
swipeLeftGesture.direction=UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeLeftGesture];

//5.右划手势
UISwipeGestureRecognizer *swipeRightGesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeGesture:)];
swipeRightGesture.direction=UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:swipeRightGesture];

}

-(void)handleTapGesture
{
NSLog(@"双击了图片");
}

-(void)handleLongPressGesture
{
NSLog(@"长按了图片");
}

-(void)handlePanGesture:(UIPanGestureRecognizer *)sender
{
//平衡
CGPoint netTranslation;

//得到拖过程中的xy坐标
CGPoint translation=[(UIPanGestureRecognizer *)sender translationInView:self.imageView1];

//平移图片
sender.view.transform=CGAffineTransformMakeTranslation(netTranslation.x+translation.x, netTranslation.y
+translation.y);

if(sender.state==UIGestureRecognizerStateEnded)
{
netTranslation.x+=translation.x;
netTranslation.y+=translation.y;
}

NSLog(@"在拖动");
}
-(void)handleSwipeGesture:(UISwipeGestureRecognizer *)sender
{
NSLog(@"%lu",(unsigned long)sender.direction);
if(sender.direction==UISwipeGestureRecognizerDirectionUp)
{
NSLog(@"向上");
}
else if(sender.direction==UISwipeGestureRecognizerDirectionLeft)
{
NSLog(@"向左");
}
else if(sender.direction==UISwipeGestureRecognizerDirectionDown)
{
NSLog(@"向下");
}
else if(sender.direction==UISwipeGestureRecognizerDirectionRight)
{
NSLog(@"向右");
}
}