iOS轻点、触摸和手势代码开发

//
// ViewController.m
// CheckPlease
//
// Created by Jierism on 16/8/4.
// Copyright © 2016年 Jierism. All rights reserved.
//

#import "ViewController.h"
#import "CheckMarkRecognizer.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *imageView;


@end

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  CheckMarkRecognizer *check = [[CheckMarkRecognizer alloc] initWithTarget:self action:@selector(doCheck:)];
  [self.view addGestureRecognizer:check];
  self.imageView.hidden = YES;
}

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

- (void)doCheck:(CheckMarkRecognizer *)check
{
  self.imageView.hidden = NO;
  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    self.imageView.hidden = YES;
  });
}


@end