ios 获取手势点击视图的tag及随机色

//随机色
#define random(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:(a)/255.0]
#define randomColor random(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))




- (void)viewDidLoad {
    [super viewDidLoad];
    
    for (int i = 0; i < 3; i ++) {
        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(20 + (100 + 17) * i, 100, 100, 50)];
        view.backgroundColor = [UIColor greenColor];
        view.tag = 10 + i;
        [self.view addSubview:view];
        
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(getViewTag:)];
        [view addGestureRecognizer:tap];
      
    }
}
 
- (void)getViewTag:(UITapGestureRecognizer *)sender{
   UIView *getView = sender.view;
    NSLog(@"%ld", getView.tag);
    getView.backgroundColor = randomColor;
}