stringByEvaluatingJavaScriptFromString recognize webview content height
Question
i placed a Uiwebview in a UIscrollview because after the uiwebview i want to display some images with the PageController.
i'm using this line of code.
-(void)webViewDidFinishLoad:(UIWebView *)webView{
if (webView!=WebView)return;
float h;
NSLog(@"web view is %f high", WebView.frame.size.height);
NSString *heightString = [WebView stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"body\").offsetHeight;"];
NSLog(@"web content is %@ high",heightString);
h = [heightString floatValue] +12.0f;
WebView.frame = CGRectMake(WebView.frame.origin.x, WebView.frame.origin.y, WebView.frame.size.width, h);
h = WebView.frame.origin.y + h + 20;
[ScrollView setContentSize:CGSizeMake(320, h)];
}
But Web view is %f high doesn't work, it does not reconize the height of the WebView does anyone know how i can fix this? Is this because i'm using [WebView loadHTMLString:html baseURL:nil];
And: NSString *heightString = [WebView stringByEvaluatingJavaScriptFromString:@"document.getElementById(\\"body\\").offsetHeight;"];
NSString *html = [NSString stringWithFormat:@"<html><head><!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\"><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" /><style>body { font: normal 13px helvetica; color: #565656; } </style></head><body><p>%@</p></body></html> ",text];
[WebView loadHTMLString:html baseURL:nil];
2 answers
solution1
1 ACCPTED 2012-05-11 14:48:55
Try
NSString *heightString = [Bericht stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight;"];
Good luck, Nathan
solution2
0 2012-05-11 14:47:00
UIWebView already contains a scrollView, why are you adding it as a subview again. Check Apple's documentation here
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