// 写在继承于UIViewController的子类中：创建单视图默认有ViewController类
// 实现：点击任何一颗UIButton，它四周的以及它自身都被变成红色，再点击就会变成原来的灰色
- (void)viewDidLoad
{
[super viewDidLoad];
NSInteger numi = 15, i = 0, j = 0;
for (; i<13; i++)
{
NSInteger numj = 30; j = 0;
for (; j<23; j++)
{
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(numi+i*30, numj+j*30, 20, 20)];
button.layer.cornerRadius = 10;
button.backgroundColor = [UIColor grayColor];
[self.view addSubview:button];
[button addTarget:self action:@selector(buttonclik:) forControlEvents:UIControlEventTouchUpInside];
// 给button.tag编号
button.tag = 101 + i + 13 * j;
}
}
}
- (void)buttonclik:(UIButton *)button;
{
NSInteger arr[5] = {button.tag, button.tag+13, button.tag-13, button.tag-1, button.tag+1};
for (int i = 0; i < 23; i++)
{
if (button.tag==101+13*i)
{
arr[3] = 100;
}
if (button.tag==113+13*i)
{
arr[4] = 100;
}
}
for (int i = 0; i < 5; i++)
{
UIButton *temB = [self.view viewWithTag:arr[i]];
if (temB.backgroundColor == [UIColor grayColor])
{
temB.backgroundColor = [UIColor redColor];
}else
{
temB.backgroundColor = [UIColor grayColor];
}
}
NSLog(@"%lu", button.tag);
}