Iphone 如何以web视图作为页面（子视图）创建无缝滚动视图

我想创建一个无缝的滚动视图 scrollview应将web视图作为其子视图 并且应该无缝滚动

问题是。。。 我是从他的信中得到这封信的

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现在我已经实现了只有3个页面的无缝滚动视图，但我希望Web视图能够取代标签…

你永远无法实现无缝滚动视图。Web视图需要一段时间来加载其内容。如果你像这样回收它们，当它们的内容被重新加载时，它们会有一段时间是空白的。

在viewDidLoad中，我们必须编写以下代码

- (void)viewDidLoad 
{
    [super viewDidLoad];

    documentTitles = [[NSMutableArray alloc] init];
    arrayWebViews = [[NSMutableArray alloc] init];

    // create our array of documents
    for (int i = 0; i < 5; i++) 
    {
        [documentTitles addObject:[NSString stringWithFormat:@"index%i",i]];
    }

    // create webviews for the html files

    webOne = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 400)];
    webTwo = [[UIWebView alloc] initWithFrame:CGRectMake(320, 0, 320, 400)];
    webThree = [[UIWebView alloc] initWithFrame:CGRectMake(640, 0, 320, 400)];

    // load all three pages into our scroll view
    [self loadPageWithId:2 onPage:0];
    [self loadPageWithId:0 onPage:1];
    [self loadPageWithId:1 onPage:2];

    // add them as the subview of scrollview
    [scrollView addSubview:webOne];
    [scrollView addSubview:webTwo];
    [scrollView addSubview:webThree];

    // adjust content size for three pages of data and reposition to center page
    scrollView.contentSize = CGSizeMake(960, 400);  
    [scrollView scrollRectToVisible:CGRectMake(320,0,320,400) animated:NO];
}

现在在ScrollViewDiEndDecelling中编写以下代码：

- (void)scrollViewDidEndDecelerating:(UIScrollView *)sender 
{    
    UIWebView* lobjTempWebView = [arrayWebViews objectAtIndex:0];

    for (int indexWebViews = 0; indexWebViews < 2; indexWebViews ++)
    {
        [arrayWebViews replaceObjectAtIndex:indexWebViews withObject:[arrayWebViews objectAtIndex:indexWebViews + 1]];
    }

    [arrayWebViews replaceObjectAtIndex:[arrayWebViews count] - 1 withObject:lobjTempWebView];

    [[arrayWebViews objectAtIndex:0] setFrame:CGRectMake(0, 0, 320, 400)];
    [[arrayWebViews objectAtIndex:1] setFrame:CGRectMake(320, 0, 320, 400)];
    [[arrayWebViews objectAtIndex:2] setFrame:CGRectMake(640, 0, 320, 400)];

    if(scrollView.contentOffset.x > scrollView.frame.size.width) 
    {

        currIndex = (currIndex >= [documentTitles count]-1) ? 0 : currIndex + 1;
        nextIndex = (currIndex >= [documentTitles count]-1) ? 0 : currIndex + 1;         
        [[arrayWebViews objectAtIndex:2] loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]                                                                                              pathForResource:[documentTitles objectAtIndex:nextIndex] ofType:@"html"]isDirectory:NO]]];

    }     
    // Reset offset back to middle page     
    [scrollView scrollRectToVisible:CGRectMake(320,0,320,400) animated:NO];
}

-（无效）ScrollViewDiEndDecelling:（UIScrollView*）发送方
{    
UIWebView*lobjTempWebView=[arrayWebViews对象索引：0]；
对于（int indexWebViews=0；indexWebViews<2；indexWebViews++）
{
[arrayWebViews replaceObjectAtIndex:indexWebViews with Object:[arrayWebViews objectAtIndex:indexWebViews+1]；
}
[arrayWebViews replaceObjectAtIndex:[arrayWebViews计数]-1，对象：lobjTempWebView]；
[[arrayWebViews对象索引：0]setFrame:CGRectMake（0,0320400）]；
[[arrayWebViews对象索引：1]setFrame:CGRectMake（320,0320400）]；
[[arrayWebViews对象索引：2]setFrame:CGRectMake（640,0320400）]；
if（scrollView.contentOffset.x>scrollView.frame.size.width）
{
currIndex=（currIndex>=[文档标题计数]-1）？0:currIndex+1；
nextIndex=（currIndex>=[documentTitles count]-1）？0:currIndex+1；
[[arrayWebViews objectAtIndex:2]loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[NSBundle mainBundle]pathForResource:[documentTitles objectAtIndex:nextIndex]类型：@“html”]isDirectory:NO]]；
}     
//将偏移量重置回中间页
[scrollView scrollRectToVisible:CGRectMake（320,0320400）动画：否]；
}

祝贺你，但你的问题在哪里？问题是。。。我从中获得了参考，现在我实现了只有3页的无缝scrollview，但我希望WebView取代标签…您尝试了什么？出了什么问题？我试着用WebView代替viewDidLoad中的标签。并在-（void）loadPageWithId:onPage:method中加载了每个Web视图，但它没有重用它们。我希望scrollview中只有3个Web视图，当我向左滑动时，所有Web视图都应该移动，新的Web视图将在第三个加载。嗨，Nick，我们可以使用任何其他技术使scrollview与web view无缝结合。既然你似乎已经解决了一个其他人都不知道好的解决方案的问题，为什么不在这里发布解决方案作为答案呢？嗨，尼克。。我已经附上了上面的答案。谢谢

- (void)scrollViewDidEndDecelerating:(UIScrollView *)sender 
{    
    UIWebView* lobjTempWebView = [arrayWebViews objectAtIndex:0];

    for (int indexWebViews = 0; indexWebViews < 2; indexWebViews ++)
    {
        [arrayWebViews replaceObjectAtIndex:indexWebViews withObject:[arrayWebViews objectAtIndex:indexWebViews + 1]];
    }

    [arrayWebViews replaceObjectAtIndex:[arrayWebViews count] - 1 withObject:lobjTempWebView];

    [[arrayWebViews objectAtIndex:0] setFrame:CGRectMake(0, 0, 320, 400)];
    [[arrayWebViews objectAtIndex:1] setFrame:CGRectMake(320, 0, 320, 400)];
    [[arrayWebViews objectAtIndex:2] setFrame:CGRectMake(640, 0, 320, 400)];

    if(scrollView.contentOffset.x > scrollView.frame.size.width) 
    {

        currIndex = (currIndex >= [documentTitles count]-1) ? 0 : currIndex + 1;
        nextIndex = (currIndex >= [documentTitles count]-1) ? 0 : currIndex + 1;         
        [[arrayWebViews objectAtIndex:2] loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]                                                                                              pathForResource:[documentTitles objectAtIndex:nextIndex] ofType:@"html"]isDirectory:NO]]];

    }     
    // Reset offset back to middle page     
    [scrollView scrollRectToVisible:CGRectMake(320,0,320,400) animated:NO];
}