iphone - 带有 UIPageControl 的 GMGridView

Question

我正在做一个项目并研究使用此处找到的 GMGridView:https://github.com/gmoledina/GMGridView .

有没有人用过，加了个UIPageControl？如果可以，如何实现？

感谢您的帮助。

Answer 1

您需要进行以下更改:-

  1.)In Demo1ViewController.h  do
    @interface Demo1ViewController : UIViewController
    {
        UIPageControl *pageCont;
    }
    @end

2.)In Demo1ViewController.m  do

In load view method write:-

      pageCont=[[UIPageControl alloc]init];
        pageCont.numberOfPages=10// set this according to your total pages
        pageCont.backgroundColor=[UIColor blueColor];
        [pageCont addTarget:self action:@selector(pagechanged:) forControlEvents:UIControlEventValueChanged];
        pageCont.frame=CGRectMake(0, 0, 320, 30);// set frame as your requirements
        [self.view addSubview:pageCont]; 
        _gmGridView.delegate=self;

    and add these two methods

    -(IBAction)pagechanged:(id)sender
    {
// add code according  to your requirements if needed

    }

    - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
        CGFloat pageWidth = _gmGridView.frame.size.width; 
        float fractionalPage = _gmGridView.contentOffset.x / pageWidth;
        NSInteger page = lround(fractionalPage);
        pageCont.currentPage = page; 
    }

这适用于 gmgrid View 的水平布局，如果需要，您可以更改 didscroll 方法的逻辑以进行垂直滚动。它可能对你有帮助。编码愉快!