LightsOut--Easy

   for (NSInteger i = 0; i < 6; i++) {
        for (NSInteger j = 0; j < 10; j++) {
            //创建和灯泡视图等同数量的button, 来控制灯泡的开关
            UIButton *lightButton = [UIButton buttonWithType:UIButtonTypeSystem];
            lightButton.frame = CGRectMake(i * 64, 27 + (j * 64), 64, 64);
            //将图片添加到button按钮上
            [lightButton setBackgroundImage:[UIImage imageNamed:@"2"] forState:UIControlStateNormal];
            //为button按钮关联实现方法
            [lightButton addTarget:self action:@selector(pressButton:) forControlEvents:UIControlEventTouchUpInside];
            //为button按钮设置tag值, 方便寻找
            lightButton.tag = 200 + j + 100 * i;
            //将button添加到窗口视图上
            [self.window addSubview:lightButton];
        }
    }

如果要实现灯泡的开关, 需要一个点击button的方法

- (void)pressButton:(UIButton *)button {
    //随机选中一个button, 则点击它所能够影响到的button最多有五个, 分别是自己和上下左右
    NSInteger array[5] = {button.tag, button.tag + 1, button.tag + 100, button.tag - 1, button.tag - 100};
    if ([button.currentBackgroundImage isEqual:[UIImage imageNamed:@"2"]]) {
        for (NSInteger i = 0; i < 5; i++) {
            UIButton *aLightButton = (UIButton *)[self.window viewWithTag:array[i]];
            if ([aLightButton.currentBackgroundImage isEqual:[UIImage imageNamed:@"1"]]) {
                [aLightButton setBackgroundImage:[UIImage imageNamed:@"2"] forState:UIControlStateNormal];
            } else {
                [aLightButton setBackgroundImage:[UIImage imageNamed:@"1"] forState:UIControlStateNormal];
            }
        }
    } else {
        for (NSInteger i = 0; i < 5; i++) {
            UIButton *aLightButton = (UIButton *)[self.window viewWithTag:array[i]];
            if ([aLightButton.currentBackgroundImage isEqual:[UIImage imageNamed:@"2"]]) {
                [aLightButton setBackgroundImage:[UIImage imageNamed:@"1"] forState:UIControlStateNormal];
            } else {
                [aLightButton setBackgroundImage:[UIImage imageNamed:@"2"] forState:UIControlStateNormal];
            }
        }
    }
}