iOS 自定义九宫格

/**
     在此我们使用的是Button来做
     因为很多时候需要文字也需要图片显示，所以Button比较合适
     */

- (void)CreatorBtn
{
    //列数
    NSInteger column = 4;
    //按钮个数
    NSInteger buttonCount = 18;
    
    //按钮的宽高
    CGFloat buttonW = self.view.frame.size.width / column;
    CGFloat buttonH = buttonW;
    
    for (int i = 0; i < buttonCount; i++) {
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
        
        btn.frame = CGRectMake(((i % column) * buttonW), ((i / column) * buttonH), buttonW - 10, buttonH - 10);
        
        
        NSLog(@"%@",NSStringFromCGRect(btn.frame));
        
        [btn setBackgroundColor:[UIColor redColor]];
        
        //绑定tag，后边监听点击
        btn.tag = i;
        
        [self.view addSubview:btn];
        
        
        //监听按钮点击
        [btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
        
    }
    
    
}

- (void)btnAction:(UIButton *)btn
{
    //根据按钮的tag来监听点击
    NSLog(@"点击了第%ld个按钮",(long)btn.tag);
    
}