#import <UIKit/UIKit.h>

@interface LongPressGestureRecognizer : UIGestureRecognizer

@end

LongPressGestuRecognizer.m:

#import "LongPressGestureRecognizer.h"
#import <UIKit/UIGestureRecognizerSubclass.h>
#import <time.h>

NSInteger timer1;
NSInteger timer2;
@implementation LongPressGestureRecognizer


-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];
    NSDate *nowDate = [NSDate date];
    NSDateFormatter *dateformatter = [[NSDateFormatter alloc] init];
    [dateformatter setDateFormat:@"ss"];
    
    timer1 = [[dateformatter stringFromDate:nowDate] integerValue];
    [dateformatter release];
    NSLog(@"%d",timer1);
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesEnded:touches withEvent:event];
    NSDate *nowDate = [NSDate date];
    NSDateFormatter *dateformatter = [[NSDateFormatter alloc] init];
    [dateformatter setDateFormat:@"ss"];
    
    [dateformatter release];
    NSLog(@"%d",timer1);
    
    if ((timer2 -timer1) >= 2)
    {
         self.state = UIGestureRecognizerStateEnded;
    }
    
}

@end

2.修改主ViewController

#import <UIKit/UIKit.h>

@interface DXWViewController : UIViewController<UIGestureRecognizerDelegate>

@end

ViewController.m:

#import "DXWViewController.h"

#import "LongPressGestureRecognizer.h"

@interface DXWViewController ()

@end

@implementation DXWViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    
    LongPressGestureRecognizer * longPress = [[LongPressGestureRecognizer alloc] initWithTarget:self action:@selector(LongPress:)];
    [self.view addGestureRecognizer:longPress];
}

-(void)LongPress:(LongPressGestureRecognizer *)my
{
    NSLog(@"OK");
}

@end

3.ViewController中的触屏事件touchesBegan和自定义手势中的touchesBegan区别：