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标题: ios - PageView 幻灯片 [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-13 04:06
标题: ios - PageView 幻灯片

我是新来的，需要一些帮助，我正在为 ipad 制作一个 ios 应用程序，并希望能够在页面 View 中使用自定义和/或库存转换为页面转换设置动画。

在各个页面 (PageView) 中设置全屏照片的正确方法是什么？类似于苹果照片应用程序。我希望能够设置一个基本的幻灯片并通过它们进行过渡。

感谢所有帮助。

谢谢

编辑:哇，这些响应速度很快，是否也可以有自定义动画？

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Best Answer-推荐答案

你可以这样创建:-

- (void)viewDidLoad {
    [super viewDidLoad];
    UIScrollView *scr=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    scr.tag = 1;
    scr.autoresizingMask=UIViewAutoresizingNone;
    [self.view addSubview:scr];
    [self setupScrollView:scr];
    UIPageControl *pgCtr = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 264, 480, 36)];
    [pgCtr setTag:12];
    pgCtr.numberOfPages=10;
    pgCtr.autoresizingMask=UIViewAutoresizingNone;
    [self.view addSubview:pgCtr];
}

- (void)setupScrollViewUIScrollView*)scrMain {
    // we have 10 images here.
    // we will add all images into a scrollView & set the appropriate size.

    for (int i=1; i<=10; i++) {
        // create image
        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat"sti%02i.jpeg",i]];
        // create imageView
        UIImageView *imgV = [[UIImageView alloc] initWithFrame:CGRectMake((i-1)*scrMain.frame.size.width, 0, scrMain.frame.size.width, scrMain.frame.size.height)];
        // set scale to fill
        imgV.contentMode=UIViewContentModeScaleToFill;
        // set image
        [imgV setImage:image];
        // apply tag to access in future
        imgV.tag=i+1;
        // add to scrollView
        [scrMain addSubview:imgV];
    }
    // set the content size to 10 image width
    [scrMain setContentSize:CGSizeMake(scrMain.frame.size.width*10, scrMain.frame.size.height)];
    // enable timer after each 2 seconds for scrolling.
    [NSTimer scheduledTimerWithTimeInterval:2 target:self selectorselector(scrollingTimer) userInfo:nil repeats:YES];
}

- (void)scrollingTimer {
    // access the scroll view with the tag
    UIScrollView *scrMain = (UIScrollView*) [self.view viewWithTag:1];
    // same way, access pagecontroll access
    UIPageControl *pgCtr = (UIPageControl*) [self.view viewWithTag:12];
    // get the current offset ( which page is being displayed )
    CGFloat contentOffset = scrMain.contentOffset.x;
    // calculate next page to display
    int nextPage = (int)(contentOffset/scrMain.frame.size.width) + 1 ;
    // if page is not 10, display it
    if( nextPage!=10 )  {
        [scrMain scrollRectToVisible:CGRectMake(nextPage*scrMain.frame.size.width, 0, scrMain.frame.size.width, scrMain.frame.size.height) animated:YES];
        pgCtr.currentPage=nextPage;
    // else start sliding form 1 
    } else {
        [scrMain scrollRectToVisible:CGRectMake(0, 0, scrMain.frame.size.width, scrMain.frame.size.height) animated:YES];
        pgCtr.currentPage=0;
    }
}

你可以使用:-

SDWebimage

AFNetworking

NSCache和 use of NSCache

用于图片缓存和异步加载图片

更新:-

这里的 Bellow 是一些库，它可以做一些类似照片库幻灯片放映的事情，请检查这个，如果你愿意，然后通过阅读如何实现将其用于你的项目。

MWPhotoBrowser for iOS

EGOPhotoViewer for iOS

CXPhotoBrowser for iOS

FGallery for iOS

Nimbus for iOS

PTImageAlbumViewController for iOS

关于ios - PageView 幻灯片，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18798435/

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