分类导航

iOS 发布时间：2022-03-30 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了ios – 在启用分页和启用滚动的情况下启用uiscrollview放大，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

我有一个uiscrollview,我加载了一系列图像,以便我可以滚动浏览图片,效果类似于 IOS中的照片效果.我正在使用此代码：

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES);
    NSString *path = [paths objectATindex:0];
    NSString *imageFilePath = [path StringByAppendingPathComponent:@"newPics"];
    fileExists   = [[NSFileManager defaultManager] fileExistsAtPath:imageFilePath];
    if(fileExists){

        imgs=[[NSMutableArray  alloc]init];


    [imgs addObject:[UIImage imageWithContentsOfFile:[path StringByAppendingPathComponent:@"newPics/pic1.png"]]];
    [imgs addObject:[UIImage imageWithContentsOfFile:[path StringByAppendingPathComponent:@"newPics/pic2.png"]]];
    [imgs addObject:[UIImage imageWithContentsOfFile:[path StringByAppendingPathComponent:@"newPics/pic3.png"]]];
    [imgs addObject:[UIImage imageWithContentsOfFile:[path StringByAppendingPathComponent:@"newPics/pic4.png"]]];


    CGSize imageSize;
    imageSize.height = 648;
    imageSize.width = 927;
    self.scroll1.frame = CGRectMake(0,imageSize.width,imageSize.height);

    self.scroll1.contentSize = CGSizeMake(imageSize.width * imgs.count,imageSize.height );
    self.scroll1.minimumZoomScale=1.0;
    self.scroll1.maximumZoomScale=3.0;
    self.scroll1.pagingEnabled = YES;


    self.scroll1.delegate=self;

    CGFloat xPos = 0.0;

    for (UIImage *image in imgs) {
        imageView = [[UIImageView alloc] initWithImage:image];
        imageView.frame = CGRectMake(xPos,0.0,imageSize.height);
        [self.scroll1 addSubview:imageView];
        xPos += imageSize.width;

    }


    }

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
    int positionScrollPrim = scrollView.contentOffset.x;

    int positionScroll = positionScrollPrim / 927 ;

    imageView = [[UIImageView alloc] initWithImage:[imgs objectATindex:positionScroll]];
    //UIImage *tmep =  [imgs objectATindex:1];

    return imageView;
}