九宫格---可滑动，可调整每行有几列，共有几行，边距可自适应

九宫格---可滑动，可调整每行有几列，共有几行，边距可自适应

效果图如下所示：

     

#import "ViewController.h"

#define spaceLR (375-numRow*70)/(numRow+1)    //左右两边的边距

#define spaceMD (375-numRow*70)/(numRow+1)    //中间空白距

@interface ViewController () <UIScrollViewDelegate>

@property (nonatomic, strong) UIScrollView * scroll;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

  

#pragma mark - 静态视图（不可滑动）

    int numRow=3;   //此时显示为3列，可以自己调整列数

    int numCol=50;  //此时显示为50行，可以自己调整行数，不能全部显示，可滑动查看

    

    //添加scroll

    _scroll = [[UIScrollView alloc] initWithFrame:self.view.bounds];

    _scroll.contentSize = CGSizeMake(375,numCol*120);

    _scroll.pagingEnabled = YES;

    _scroll.showsHorizontalScrollIndicator = NO;

    _scroll.showsVerticalScrollIndicator = NO;

    _scroll.bounces = NO;

    _scroll.delegate = self;

 

    for (int j=0; j<numCol; j++)

    {

        for (int i=0; i<numRow; i++)

        {

            UIView * view=[[UIView alloc]initWithFrame:CGRectMake(spaceLR+i*70+i*spaceMD, 20+j*120, 70, 120)];

            UIImageView * imageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 70, 70)];

            imageView.image=[UIImage imageNamed:[NSString stringWithFormat:@"%d",arc4random_uniform(20)+256]];

            [view addSubview: imageView];

            UILabel * label=[[UILabel alloc]initWithFrame:CGRectMake(0, 75, 70, 20)];

            label.text=@"下载";

            label.textAlignment=NSTextAlignmentCenter;

            label.font=[UIFont fontWithName:nil size:14];

            [view addSubview:label];

            [_scroll addSubview:view];

        }

    }

    [self.view addSubview:_scroll];

}

@end