WebView height not set based on its content - ios

Question

I know this question was posted so many times but still I can not change the height of UIWebView based on its content
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.title=#"webview";
[_webView setDelegate:self];
NSString * string = #"<h1>This is HTML string</h1>";
[_webView loadHTMLString:string baseURL:nil];
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
return YES;
}
- (void)webViewDidStartLoad:(UIWebView *)webView
{
NSLog(#"start loadinng.......");
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
NSLog(#"finish loading.......");
CGRect frame = _webView.frame;
frame.size.height = 1;
_webView.frame = frame;
CGSize fittingSize = [_webView sizeThatFits:CGSizeZero];
frame.size = fittingSize;
_webView.frame = frame;
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
NSLog(#"Failed to load with error :%#",[error debugDescription]);
}
can anybody help me how can resize my UIWebView height?

Answer 1

Here is your answer.
- (void)webViewDidFinishLoad:(UIWebView *)webView {
if (webView.isLoading){
return;
}
CGSize contentSize = webView.scrollView.contentSize;
NSLog (#"height: %f",contentSize.height);
}
After gettting this height reframe your webView with new width and height and also reframe its parent view if there any.

Answer 2

How about this.
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
[webView sizeToFit];
webView.frame = CGRectMake(x,y,width,webView.frame.size.height);
}

Answer 3

I usually use these methods, to set UIWebview frame as it's content size:
- (void)webViewDidStartLoad:(UIWebView *)webView
{
CGRect frame = webView.frame;
frame.size.height = 5.0f;
webView.frame = frame;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
CGSize mWebViewTextSize = [webView sizeThatFits:CGSizeMake(1.0f, 1.0f)]; // Pass about any size
CGRect mWebViewFrame = webView.frame;
mWebViewFrame.size.height = mWebViewTextSize.height;
webView.frame = mWebViewFrame;
//Disable bouncing in webview
for (id subview in webView.subviews)
{
if ([[subview class] isSubclassOfClass: [UIScrollView class]])
{
[subview setBounces:NO];
}
}
}
They are automatically called (if you set webviews delegate to this class), when WebView has finished loading it's content.
or
check this
raywenderlich-tutorial
This might helps you :)

Answer 4

First calculate height of web view for desired content.
NSString* lString = #"<h1>This is HTML string</h1>";
NSAttributedString* lAttributedText = [[NSAttributedString alloc] initWithData: [lString dataUsingEncoding:NSUTF8StringEncoding]
options:#{
NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: #(NSUTF8StringEncoding)
}
documentAttributes: nil
error:nil];
CGRect lBoundingRect = [lAttributedText boundingRectWithSize: CGSizeMake(_webView.bounds.size.width, CGFLOAT_MAX) options: NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading context: nil];
then set it to _webView.frame
Now, load web view
[_webView setDelegate:self];
[_webView loadHTMLString: lString baseURL:nil];