Question

我正在ios上创建一个epub阅读器。我能够在uiwebview中显示epub，但是epub doest的大小不适合uiwebview。看来epub文件更大，而不是webview中的比例。我该怎么做才能调整它的大小？感谢。

这是我的代码。

vCover = [[UIView alloc] initWithFrame：CGRectMake（0,0，self.view.bounds.size.width，self.view.bounds.size.height）];

CGRect frame = busyLoad.frame;
frame.origin.x = self.view.frame.size.width / 2 - frame.size.width / 2;
frame.origin.y = self.view.frame.size.height / 2 - frame.size.height / 2;
busyLoad.frame = frame;


[self.view addSubview:vCover];
[self.view bringSubviewToFront:vCover];
[self.view addSubview:busyLoad];
[self.view bringSubviewToFront:busyLoad];
[busyLoad startAnimating];
int offset = [[NSString stringWithFormat:@"%@", todo.htmOffset]intValue]*webView.bounds.size.height;

NSLog(@"pageH:%f ", webView.bounds.size.height);

UIScrollView *scrollview    = (UIScrollView *)[webView.subviews objectAtIndex:0];
scrollview.contentInset     = UIEdgeInsetsMake(44.0,0.0,44.0,0.0);
NSString* javascript = [NSString stringWithFormat:@"window.scrollBy(0, %d);", offset];
[webView stringByEvaluatingJavaScriptFromString:javascript];
NSString *padding = @"document.body.style.margin='50';";
[webView stringByEvaluatingJavaScriptFromString:padding];
NSString *setTextSizeRule = [NSString stringWithFormat:@"addCSSRule('body', '-webkit-text-size-adjust: %d%%;')", 100];
[webView stringByEvaluatingJavaScriptFromString:setTextSizeRule];
NSLog(@"DidLoad:%d", offset);

[webView setHidden:NO];



[busyLoad removeFromSuperview];
[vCover removeFromSuperview];
[busyLoad stopAnimating];

Answer 1

你好!!，

您可以像UIScrollView的ios7分页属性一样进行分页   （即webview.scrollview.pagingEnabled = yes）使用以下方法。

- (void)webViewDidFinishLoad:(UIWebView *)webView
    {
    [self setPagination:self];
    }

    - (void) setPagination:(UIWebView *) webView
    {
        NSString *varMySheet = @"var mySheet = document.styleSheets[0];";

        NSString *addCSSRule =  @"function addCSSRule(selector, newRule) {"
        "ruleIndex = mySheet.cssRules.length;"
        "mySheet.insertRule(selector + '{' + newRule + ';}', ruleIndex);"   // For Firefox, Chrome, etc.
        "}";

        NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", webView.frame.size.height, webView.frame.size.width];
        NSString *insertRule2 = [NSString stringWithFormat:@"addCSSRule('p', 'text-align: justify;')"];

        [webView stringByEvaluatingJavaScriptFromString:varMySheet];

        [webView stringByEvaluatingJavaScriptFromString:addCSSRule];

        [webView stringByEvaluatingJavaScriptFromString:insertRule1];

        [webView stringByEvaluatingJavaScriptFromString:insertRule2];


        CGSize contentSize = CGSizeMake([[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth;"] floatValue],
                                        [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"] floatValue]);
        int pageCount = contentSize.width/webView.frame.size.width;

    //move to page using offset
    //            CGPoint point = CGPointMake(0, 0);
    //            point = CGPointMake(indexOfPage*webView.frame.size.width, 0);
    //            self.scrollView.contentOffset = point;

    }

.epub上的分页功能在uiwebview iOS上不起作用

1 个答案: