56.九宫格布局

- (void)viewDidLoad {

    [super viewDidLoad];

    //每个Item宽高

    CGFloat W = 80;

    CGFloat H = 100;

    //每行列数

    NSInteger rank = 3;

    //每列间距

    CGFloat rankMargin = (self.view.frame.size.width - rank*W)/(rank+1);

  

    //每行间距

    CGFloat rowMargin = 20;

    //Item索引 -->根据需求改变索引

    NSUInteger index = 9;

    

    for (int i = 0; i<index ; i++) {

        //Item  X 轴

        CGFloat X = (i%rank)*(W+rankMargin)+rankMargin;

        //Item Y轴

        NSUInteger Y = (i/rank)*(H+rowMargin);

        //Item top

        CGFloat top = 50;

        UIView *speedView = [[UIView alloc]init];

        speedView.tag = i;

        speedView.frame = CGRectMake(X, Y+top, W, H);

        UIImage *image = [UIImage imageNamed:@"IMG_0449"];

        speedView.layer.contents = (id)image.CGImage;

        

        [self.view addSubview:speedView];

        

        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tap:)];

        tap.view.tag = speedView.tag;

        [speedView addGestureRecognizer:tap];

        

    }

}

-(void)tap:(UITapGestureRecognizer*)GestureRecognizer{

    NSLog(@"======%ld",GestureRecognizer.view.tag);//lable的tag

}