UIWebView loadHTMLString baseURL example in Objective C (iOS).

UIWebView loadHTMLString baseURL

Sets the main page content and base URL.

- (void)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL

Parameters of [UIWebView loadHTMLString baseURL]
string
The content for the main page.
baseURL
The base URL for the content.

UIWebView loadHTMLString baseURL example.

- (id)initWithFrame:(CGRect)frame {

    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code.
        CGRect oFrame = frame;
        CGPoint oPositionCoords = CGPointMake(0, 0);
        oFrame.origin = oPositionCoords;

        m_oDataPresentView = [[UIWebView alloc] initWithFrame:oFrame];
        [m_oDataPresentView loadHTMLString:@"<html><body style=\"background-color: #000000; color: #FFFFFF; font-family: Helvetica; font-size: 10pt; width: 300px; word-wrap: break-word;\"></body></html>" baseURL:nil];
        m_oDataPresentView.delegate = self;

        [self addSubview:m_oDataPresentView];
    }
    return self;
}

Example of [UIWebView loadHTMLString baseURL].

- (void) showWebView:(NSString *)htmlText{
    [webView setHidden:FALSE];
    [txtContent setHidden:TRUE];

    NSString * htmlString = [NSString stringWithFormat:@"<html><head><style type='text/css'>body {background-color:transparent; } p { color:white; font-family:Helvetica; font-size:14px; } a { color:white; }</style></head><body><p>%@</p></body></html>", htmlText];
    webView.delegate = self;

    NSLog(@"htmlstring  %@",htmlString);
   [webView loadHTMLString:htmlString baseURL:nil];
}
Under iOS5 I found that sometimes a UIWebView would not load its content if

<meta charset="utf-8"></meta>
(or other equivalent charset specification) was not present in the HTML.

UIWebView loadHTMLString baseURL example.

- (void)embedYouTube:(NSString*)urls frame:(CGRect)frame {

    urls=[urls stringByAppendingString:@"&autoplay=1"];
    NSString *htmlString =[NSString stringWithFormat: @"<html><head> <meta name = \"viewport\" content = \"initial-scale = 1.0, user-scalable = no, width = 212\"/></head> <body style=\"background:#F00;margin-top:0px;margin-left:0px\"><div><object width=\"212\" height=\"212\"><param name=\"movie\" value=\"%@\">",urls];

    NSString *htm2=[NSString stringWithFormat:@"</param><param name=\"wmode\" value=\"transparent\"></param>    <embed src=\"%@\"type=\"application/x-shockwave-flash\" wmode=\"transparent\" width=\"212\" height=\"212\"></embed>    </object></div></body></html>",urls];
//    NSString* embedHTML = @"<html><head> </head><body style=\"margin:0\"> <iframe title=\"YouTube video player\" class=\"youtube-player\" type=\"text/html\" width=\"%d\" height=\"%d\" src=\"%@\" frameborder=\"0\" allowFullScreen></iframe> </body></html>"; 

    NSString* html = [NSString stringWithFormat:@"%@%@",htmlString,htm2];
    float version = [[[UIDevice currentDevice] systemVersion] floatValue];

    if(version<5.0)
    {

        NSRange r=[urls rangeOfString:@"v="];
        NSRange ran=NSMakeRange(r.location+2, [urls length]-r.location-2);
        NSString *vid=[urls substringWithRange:ran];
    html=[NSString stringWithFormat:@"<embed id=\"yt\" src=\"http://www.youtube.com/watch?v=%@&fs=0\" type=\"application/x-shockwave-flash\" width=\"300\" height=\"300\"></embed>", vid];
    }
    //NSLog(html);
    if(webView == nil) { 
        webView = [[UIWebView alloc] initWithFrame:frame]; 
        [self.view addSubview:webView]; 
        [webView setDelegate:self];
    } 
    [webView loadHTMLString:html baseURL:nil]; 
}

End of UIWebView loadHTMLString baseURL example article.