Ios ScrollView未使用imageview更新

我的主捆绑包中有20个图像，我想在水平滚动视图中显示它

我成功地做到了这一点，但现在的问题是，在所有imageview都设置为scroll view之后，图像在scrollview中可见，这需要时间

为了解决这个问题，我创建了一个NSO操作

-(BOOL)sync:(NSError**)error
{
    float imageLeftPosition = 0;

    for (int imageCount = 1; imageCount<=syncObject.syncNumberOfImages; imageCount++) {

        UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(imageLeftPosition, 0, syncObject.syncImageWidth, syncObject.syncImageHeight)];

        [imgView setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d_%d.jpg",syncObject.syncChapterNumber,imageCount]]];

        imgView.tag = imageCount;

//        NSDictionary *dictionary = [NSDictionary new];
//        
//        [dictionary setValue:imgView forKey:CHAPTER_IMAGE];

        imageLeftPosition = imageLeftPosition+syncObject.syncImageWidth;

        //[dictionary setValue:[NSString stringWithFormat:@"%f",imageLeftPosition] forKey:CHAPTER_SCROLL_LEFT_POSITION];

      NSDictionary *dictionary = [[NSDictionary alloc] initWithObjects:[NSArray arrayWithObjects:imgView,[NSString stringWithFormat:@"%f",imageLeftPosition], nil] forKeys:[NSArray arrayWithObjects:CHAPTER_IMAGE,CHAPTER_SCROLL_LEFT_POSITION, nil]];

        [self sendNotification:dictionary];

        imgView = nil;
        dictionary = nil;

    }

    return YES;
}

这是通知处理程序方法，我在滚动视图中为主线程上的每个循环设置内容大小和图像视图。加载所有图像后，仍然可以看到滚动视图

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我做错了什么？

尝试使用pagedflowview。这将仅将可见项加载到Scrollview中，并且易于自定义。你也可以搜索伊卡鲁塞尔

试试这个

-(void)showimagesasSlide:(int) totalimagesCount
{
    int xAxisofimageView=0;

    for (int initialimagesCount=0;initialimagesCount<totalimagesCount; initialimagesCount++) {
        UIImageView *detailedImageview=[[UIImageView alloc] init];
        detailedImageview.userInteractionEnabled=YES;

        UIImage *dynamicImage=[ScaleImageSize squareImageWithImage:[images objectAtIndex:initialimagesCount] scaledToSize:CGSizeMake(300, 500) ];


        if (IS_IPHONE_5) {
            detailedImageview.frame=CGRectMake(xAxisofimageView, 0, 320, 568);

        }
        else
        {
            detailedImageview.frame=CGRectMake(xAxisofimageView, 0, 320, 460);

        }
     //   detailedImageview.contentMode=UIViewContentModeCenter;


        detailedImageview.backgroundColor=[UIColor clearColor];
        detailedImageview.image=dynamicImage;
        detailedImageview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin  ;
        detailedImageview.tag=initialimagesCount+12;

        [mainScrollview addSubview:detailedImageview];
        xAxisofimageView=xAxisofimageView+320;

      }
    mainScrollview.contentSize=CGSizeMake(320*images.count, 0);
}

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是的，这是一个选项，但我想知道当前逻辑的问题是什么。内容大小是否在此[[dictionary valueForKey:CHAPTER\u SCROLL\u LEFT\u POSITION]floatValue]中正确，使用静态值作为图像计数*图像大小进行交叉检查。

-(void)showimagesasSlide:(int) totalimagesCount
{
    int xAxisofimageView=0;

    for (int initialimagesCount=0;initialimagesCount<totalimagesCount; initialimagesCount++) {
        UIImageView *detailedImageview=[[UIImageView alloc] init];
        detailedImageview.userInteractionEnabled=YES;

        UIImage *dynamicImage=[ScaleImageSize squareImageWithImage:[images objectAtIndex:initialimagesCount] scaledToSize:CGSizeMake(300, 500) ];


        if (IS_IPHONE_5) {
            detailedImageview.frame=CGRectMake(xAxisofimageView, 0, 320, 568);

        }
        else
        {
            detailedImageview.frame=CGRectMake(xAxisofimageView, 0, 320, 460);

        }
     //   detailedImageview.contentMode=UIViewContentModeCenter;


        detailedImageview.backgroundColor=[UIColor clearColor];
        detailedImageview.image=dynamicImage;
        detailedImageview.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin  ;
        detailedImageview.tag=initialimagesCount+12;

        [mainScrollview addSubview:detailedImageview];
        xAxisofimageView=xAxisofimageView+320;

      }
    mainScrollview.contentSize=CGSizeMake(320*images.count, 0);
}