iOS九宫格布局

        for (int i=0; i<[self.imagearray count]; i++) {

            UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];

            button.frame = CGRectMake(i%3*(SCREEN_WIDTH/3-1), i/3*(SCREEN_WIDTH/3-1)+self.view2.frame.origin.y+self.view2.frame.size.height+5,SCREEN_WIDTH/3-1,SCREEN_WIDTH/3-1);

            self.Statebutton=button1;

            NSString *str = [_imagearray objectAtIndex:i];

            button.tag =i;

            [button setBackgroundImage:[UIImage imageNamed:[[IhuikouPublicTools getImagePath]stringByAppendingPathComponent:str]]forState:UIControlStateNormal];

            [button addTarget:self action:@selector(change:) forControlEvents:  UIControlEventTouchUpInside ];

            [button setImage:nil forState:UIControlStateNormal];

            [self.scrollview addSubview:button];

        }

iOS九宫格布局

原文：http://blog.csdn.net/yangchen9931/article/details/45039679