九宫格

  //完成布局设计
    
    //三列
    int totalloc=3;
    // 宽度
    CGFloat appvieww=85;
    //高度
    CGFloat appviewh=30;
    
    CGFloat margin=(WIDTHW-totalloc*appvieww)/(totalloc+1);
    CGFloat marginY=10;
    for (int i=0; i<self.allarray.count; i++) {
        int row=i/totalloc;//行号
        //1/3=0,2/3=0,3/3=1;
        int loc=i%totalloc;//列号
        
        CGFloat appviewx=margin+(margin+appvieww)*loc;
        CGFloat appviewy=marginY+(marginY+appviewh)*row;
        
        //创建地区按钮
        UIButton *regionBtn=[[UIButton alloc] initWithFrame:CGRectMake(appviewx, appviewy+64, appvieww, appviewh)];
        [self.view addSubview:regionBtn];
        //regionBtn.backgroundColor=[UIColor greenColor];
        NSLog(@"#####buttons###allarray###%@",self.allarray[i]);
        regionBtn.titleLabel.font=[UIFont systemFontOfSize:12];
        RegionModel *regionModel=[[RegionModel alloc] init];
        regionModel=_allarray[i];
        [regionBtn setTitle:regionModel.name forState:UIControlStateNormal];
        [regionBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [regionBtn addTarget:self action:@selector(didClickRegion) forControlEvents:UIControlEventTouchUpInside];
        
    }