I have created a UIWebView and used a HTML file to display some contents. But when I run it instead of showing the contents only the whole HTML file coding is coming in the WebView. Please help and tell me what is wrong.
UIWebView *ingradients= [[UIWebView alloc]init];
[ingradients setFrame:CGRectMake(10, 170, 300, 300)];
[ingradients loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"htmlfile" ofType:#"html"]isDirectory:NO]]];
ingradients.delegate=self;
[self.view addSubview:ingradients];
My htmlfile.html contains
<html>
<body>
<p><strong>Ingredients</strong></p>
</body>
</html>
Instead of showing "Ingredients" in bold its showing the whole coding of htmlfile.html
In Your code you alway contain HTML code because your request always return file htmlfile with extantion .html
If you want to get specific value from HTML content you need to Parce HTML content by using Hpple. Also This is documentation with exmple that are use for parse HTML content.
In your case you use: (by using Hpple)
TFHpple *dataParser = [TFHpple hppleWithHTMLData:placesData];
// name of place
NSString *XpathQueryString = #"//p/strong";
NSArray *listOfdata= [dataParser searchWithXPathQuery: XpathQueryString];
That's weird, I have similar code for this and html is rendered as rich text but not as plain text (like you have), the only difference I have is using fileURLWithPath: but not fileURLWithPath:isDirectory:. Here's my code:
NSString *localFilePath = [[NSBundle mainBundle] pathForResource:#"about" ofType:#"html"];
NSURLRequest *localRequest = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:localFilePath]];
[_aboutWebView loadRequest:localRequest];
Maybe you have some issues with file encoding, but as far as I guess, that should not be the case.
Try this code:
- (NSString *) rootPath{
return [NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES) lastObject];
}
- (NSString *) pathFoResourse : (NSString *) resourseName ofType: (NSString *)type{
NSString *path = [[MMSupport rootPath] stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.%#", resourseName, type]];
if (![[NSFileManager defaultManager] fileExistsAtPath:path]) {
path = [[NSBundle mainBundle] pathForResource:resourseName ofType:type];
}
NSLog(#"**path:%#**", path);
return path;
}
- (void) loadDataToWebView : (CGRect) frame{
NSString *htmlString = [NSstring stringWithContentsOfFile:[MMSupport pathFoResourse:#"filename" ofType:#"html"] encoding:NSUTF8StringEncoding) error:nil];
UIWebView *webView = [[UIWebView alloc] initWithFrame:frame];
[webView loadHTMLString:htmlString baseURL:nil];
}
Related
I'm trying to "inject" a local css file into downloaded xhtml file.
I found many examples of how to do it, but it just doesn't work for me...
Here is my code:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *cssPath = [path stringByAppendingPathComponent:#"test.css"];
NSString *js = [NSString stringWithFormat:#"var cssNode = document.createElement('link');"
"cssNode.type = 'text/css';"
"cssNode.rel = 'stylesheet';"
"cssNode.href = '%#';", cssPath];
js = [NSString stringWithFormat:#"%#document.getElementsByTagName('head')[0].appendChild(cssNode);", js];
//m_webview is a member
[m_webView stringByEvaluatingJavaScriptFromString:js];
}
What am I doing wrong here?
Thanks,
I also had trouble doing this.
I was trying to load an HTML file from a server and change the styling using a local CSS file.
At first I used
[webView loadRequest:reqObj];
And when it hit - (void)webViewDidFinishLoad:(UIWebView *)webView i was trying to push the CSS file as a child to 'head':
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *cssPath = [path stringByAppendingPathComponent:#"style.css"];
NSString *js = [NSString stringWithFormat:#"var cssChild = document.createElement('link');"
"cssChild = 'text/css';"
"cssChild = 'stylesheet';"
"cssChild = '%#';", cssPath];
js = [NSString stringWithFormat:#"%# document.getElementsByTagName('head')[0].appendChild(cssChild);", js];
[webView stringByEvaluatingJavaScriptFromString:js];
}
So... it didn't work...
then i tried
NSString *path = [[NSBundle mainBundle] bundlePath];
NSURL *baseURL = [NSURL fileURLWithPath:path];
[webView loadHTMLString:htmlString baseURL:baseURL];
(I copied the HTML string into htmlString) and then, inside - (void)webViewDidFinishLoad:(UIWebView *)webView I injected the CSS as in the code above. And it worked!
But... my HTML file is stored in a remote server and I didn't have the HTML string, so I used
NSString* myFile = [NSString stringWithFormat:#"http://blablabla.com/file.html"];
NSString* myFileURLString = [myFile stringByReplacingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
NSData *myFileData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:myFileURLString]];
NSString* myFileHtml = [[[NSString alloc] initWithData:myFileData encoding:NSASCIIStringEncoding] autorelease];
To get the HTML. Now, I have the raw HTML text inside ' myFileHtml '.
I now use
NSString *path = [[NSBundle mainBundle] bundlePath];
NSURL *baseURL = [NSURL fileURLWithPath:path];
[webView loadHTMLString:myFileHtml baseURL:baseURL];
And catching the response in ' webViewDidFinishLoad ', injecting my CSS file into it and it worked :)
Maybe there's another, more elegant, solution to this problem, but this is what I came up with...
Hope it helped.
cssNode.href = '%#';", cssPath];
The line above fails because it tries to fetch the file from the webserver. Using something like:
cssNode.href = 'file://%#';", cssPath];
accesses the local file system. You can use Safari's developer mode to inspect the iPhone simulator and see whether file is found and loaded.
I eventually ended up implementing inline stylesheets instead of linking to stylesheet. Here's the code that works for me
NSError *error;
NSString *css = [[NSString alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"stylesheet" ofType:#"css"] encoding:NSASCIIStringEncoding error:&error];
css = [css stringByReplacingOccurrencesOfString:#"\n" withString:#" "]; // js dom inject doesn't accept line breaks, so remove them
NSString *js = [NSString stringWithFormat:#"var styleNode = document.createElement('style');"
"styleNode.type = 'text/css';"
"styleNode.innerHTML = ' %# ';", css];
js = [NSString stringWithFormat:#"%#document.getElementsByTagName('head')[0].appendChild(styleNode);", js];
[_webView stringByEvaluatingJavaScriptFromString:js];
I ran into this while looking for an answer to the same question. I'm loading an HTML page from a web server into a UIWebView. The HTML already has lots of CSS, appropriate for web viewing. In my case I wanted to display:none a few irrelevant div's.
I didn't want to store the HTML locally then load from the file, so I came up with another solution, conceptually similar to others here but more to my tastes. This is Swift 3. Have this run after the page loads, but before it's displayed:
let css = "#someDiv {display:none;} #otherDiv {display:none;} .someClass {display:none;}"
let js = "var sheet = document.createElement('style');sheet.innerHTML = \"\(css)\";document.body.appendChild(sheet);"
webView.stringByEvaluatingJavaScript(from: js)
maybe this should do the trick? (Not tested in Xcode):
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *cssPath = [path stringByAppendingPathComponent:#"test.css"];
NSString *js = [NSString stringWithFormat:#"var cssNode = document.createElement('link');"
"cssNode.type = 'text/css';"
"cssNode.rel = 'stylesheet';"
"cssNode.href = '%#';", cssPath];
js = [NSString stringWithFormat:#"%#document.getElementsByTagName('head')[0].appendChild(cssNode);", js];
NSString *k = [NSString stringWithFormat:#"var script = %#; %#", cssPath, js];
//m_webview is a member
[m_webView stringByEvaluatingJavaScriptFromString:k];
}
Swift 5:
Before Show WebSite inject css to html
import UIKit
import WebKit
class WebViewController: UIViewController, WKNavigationDelegate {
#IBOutlet weak var webView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
config()
}
private func config(){
webView.navigationDelegate = self
guard let url = URL(string: "url") else {
return
}
webView.load(URLRequest(url: url))
}
func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
let css = "Css Code"
let js = "var style = document.createElement('style'); style.innerHTML = '\(css)'; document.head.appendChild(style);"
webView.evaluateJavaScript(js, completionHandler: nil)
}
}
I've read many of the existing questions and answers for my problem but none seem to answer it specifically and simply.
I am displaying many HTML files in my app and want to use a CSS to help format them. The CSS file will be held locally together with the HTML files.
I think I want to add the CSS ref inline - presuming that's then right way to do it?
My code is
- (void)viewDidAppear:(BOOL)animated {
[super viewWillAppear:animated];
[adviceContent loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:[advice objectForKey:#"HTML"] ofType:#"html"]
isDirectory:NO]]];
[super viewDidAppear:animated];
}
And I've inserted my CSS reference in the HTML file thus within the head tags <
link rel="stylesheet" type="text/css" href="photovaluesCSS_2column.css" media="screen"/>
Can someone explain where I'm going wrong?
Thanks
When loading the HTML, you need to specify a base URL for the css file, so your controller will "know" where that CSS file is located.
Here's a code that loads a html string which uses a css file. You can load the entire css from a file, or modify it as you need.
// HTML files are stored in the main bundle
NSBundle *bundle = [NSBundle mainBundle];
NSString *path = [bundle bundlePath];
NSString *filename = #"none";
NSString *fullPath = [NSBundle pathForResource:filename ofType:#"html" inDirectory:path];
// load a HTML from a file
NSString *chapter_filename = [NSString stringWithFormat:#"Section%d", _chapter];
NSString *sectionHTMLPath = [[NSBundle mainBundle] pathForResource:chapter_filename ofType:#"html"];
NSString* htmlContent = [NSString stringWithContentsOfFile:sectionHTMLPath encoding:NSUTF8StringEncoding error:nil];
// add a generic template and the css file directive
NSString* htmlString = #"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\"> <html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"he\" lang=\"he\"><head><style type=\"text/css\" media=\"all\">#import \"styles.css\";</style><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" /></head><body>%#</body></html>";
// load the html into a web view
NSURL *url = [NSURL fileURLWithPath:fullPath];
[_webView loadHTMLString:[NSString stringWithFormat:htmlString, htmlContent] baseURL:url];
I'm trying to display an html file into a UIWebView :
NSString *htmlPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"error.htm"];
NSError* error;
NSStringEncoding encoding;
NSString *htmlContent = [NSString stringWithContentsOfFile:htmlPath usedEncoding:&encoding error:&error];
NSString* bundlePath = [[NSBundle mainBundle] bundlePath];
[self.webView loadHTMLString:htmlContent baseURL:[NSURL fileURLWithPath:bundlePath]];
error.htm is localized. When using this method, no page is loaded. The htmlContent refers to myApp.app/error.htm. But all my error.htm files are in localized folders.
If I use another non localized HTML file (error2.htm, pure copy of error.htm), it is displayed.
How may I use the localized file ?
You are creating the path to the html file yourself using the root resource path and a string - the iPhone isn't psychic, how would it know that you have localised this file?
Try using
NSString *htmlPath = [[NSBundle mainBundle] pathForResource:#"error" ofType:#"html"];
instead - this should deal with localised resources for you.
Localization shouldn't be the problem - I'm loading localized HTML files perfectly fine using something like this:
NSString *path = [[NSBundle mainBundle] pathForResource:#"error" ofType:#"htm"];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:path isDirectory:NO]];
// ...
[self.webView loadRequest:request];
The answer is not correct (and also didn't work for me) -
this is the function to use for loading localized resource:
- (NSString *)pathForResource:(NSString *)name ofType:(NSString *)ext inDirectory:(NSString *)subpath forLocalization:(NSString *)localizationName;
the localizationName is the two characters localization language code.
BTW - you can get your default/current one by using:
return [[[NSUserDefaults standardUserDefaults] objectForKey:#"AppleLanguages"] objectAtIndex:0];
How can we load our own html file into the UIWebView?
The following code will load an HTML file named index.html in your project folder:
[WebView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"index" ofType:#"html"]isDirectory:NO]]];
Cody Gray is right but there's also this way :
// Load the html as a string from the file system
NSString *path = [[NSBundle mainBundle] pathForResource:#"index" ofType:#"html"];
NSString *html = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
// Tell the web view to load it
[WebView loadHTMLString:html baseURL:[[NSBundle mainBundle] bundleURL]];
This is useful if you need to edit the html before you load it.
Swift
guard let path = NSBundle.mainBundle().pathForResource("index", ofType: "html") else {
return
}
let url = NSURL(fileURLWithPath: path)
self.webview.loadRequest(NSURLRequest(URL:url))
By using following code you can load an html in an WebView.here web is web view obj and inde
Web.delegate = self;
[Web loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"index" ofType:#"html"]isDirectory:NO]]];
Apple's documentation suggests using loadHTMLString:baseURL::
Use the loadHTMLString:baseURL: method to begin loading local HTML files or the loadRequest: method to begin loading web content. Use the stopLoading method to stop loading, and the loading property to find out if a web view is in the process of loading.
The loadHTMLString:baseURL: documentation offers further reasoning:
To help you avoid being vulnerable to security attacks, be sure to use this method to load local HTML files; don’t use loadRequest:.
This one might help: https://stackoverflow.com/a/29741277
Swift Version 2.1
// load html to String with Encoding
let path = NSBundle.mainBundle().pathForResource("policy", ofType: "html")
do {
let fileHtml = try NSString(contentsOfFile: path!, encoding: NSUTF8StringEncoding)
webView.loadHTMLString(fileHtml as String, baseURL: nil)
}
catch {
}
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:#"privacy-Policy" ofType:#"html" inDirectory:nil];
NSData *htmlData = [NSData dataWithContentsOfFile:htmlFile];
[webView loadData:htmlData MIMEType:#"text/html" textEncodingName:#"UTF-8" baseURL:[NSURL URLWithString:#""]];
I have downloaded a gif image into an NSData object (I've checked the contents of the NSData object and it's definitely populated). Now I want to load that image into my UIWebView. I've tried the following:
[webView loadData:imageData MIMEType:#"image/gif" textEncodingName:nil baseURL:nil];
but I get a blank UIWebView. Loading the image from the same URL directly works fine:
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:imageUrl]];
[imageView loadRequest:request];
Do I need to set the textEncodingName to something, or am I doing something else wrong?
I want to load the image manually so I can report progress to the user, but it's an animated gif, so when it's done I want to show it in a UIWebView.
Edit: Perhaps I need to wrap my image in HTML somehow? Is there a way to do this without having to save it to disk?
I tested the code with PNG ("image/png"), JPG ("image/jpeg") and GIF ("image/gif"), and it works as expected:
[webView loadData:imageData MIMEType:imageMIMEType textEncodingName:nil baseURL:nil];
Now, what's wrong with your app?
the imageData is not a well-formed image data. Try opening the file with a web browser or an image editor to check it.
the MIME type is incorrect. Look at the first bytes of the data to determine the actual file type.
webView is not connected in IB, is nil, is hidden, is covered with another view, is off screen, has a CGRectZero frame, etc.
I did not really try to load image to UIWebView but a google search gives me. I think your image string must have a good path and looks like a URL
NSString *imagePath = [[NSBundle mainBundle] resourcePath];
imagePath = [imagePath stringByReplacingOccurrencesOfString:#"/" withString:#"//"];
imagePath = [imagePath stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
NSString *HTMLData = #"
<h1>Hello this is a test</h1>
<img src="sample.jpg" alt="" width="100" height="100" />";
[webView loadHTMLString:HTMLData baseURL:[NSURL URLWithString: [NSString stringWithFormat:#"file:/%#//",imagePath]]];
You can see more details here : Loading local files to UIWebView
UIImage *screenshot= [UIImage imageAtPath:
[[NSBundle mainBundle] pathForResource:#"MfLogo_aboutus" ofType:#"png"]];
NSData *myData = UIImagePNGRepresentation(screenshot);
[vc addAttachmentData:myData mimeType:#"image/png" fileName:#"logo.png"];
You can load urlImage into webview which is not saved locally as shown below code
NSString *str = #"";
str = [str stringByAppendingString:#"http://t3.gstatic.com/images?q=tbn:7agzdcFyZ715EM:http://files.walerian.info/Funny/Animals/funny-pictures-firefox-file-transfer-is-complete.jpg"];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:str]];
[webView loadData:data MIMEType:#"application/jpg" textEncodingName:#"UTF-8" baseURL:[NSURL URLWithString:#"http://google.com"]];
I had the same problem and I found somewhere else that you have to provide a value in the baseURL parameter. I also had encoding set:
textEncodingName:#"UTF-8" baseURL:[NSURL URLWithString:#"http://localhost/"]];
When I had nil in the baseURL parameter it would not load. By putting something that's basically irrelevant in there the MS docs all worked.
You may want to try assigning a delegate to the webview and implementing the method:
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
To see more specifically what error you're getting. If it doesn't get called, implement the method:
- (void)webViewDidFinishLoad:(UIWebView *)webView
as well, just to make sure something is happening, otherwise there might be an issue with UIWebView (assuming you haven't returned NO from webView:shouldStartLoadWithRequest:navigationType:)
To expand on Ed Marty's comment:
The HTML command to put in a base 64 image is:
<img src="data:image/png;base64,##PUT THE BASE64 DATA HERE###" />
I have a category (I'm not sure where it came from, not me...) available on my website that converts NSData to it's Base64 string representation.
Header
Implementation
Easy enough to do, assuming 'imageData' is the NSData variable containing your image:
[imageData base64Encoding] into the above string.
try this code
// 1) Get: Get string from “outline.plist” in the “DrillDownSave”-codesample.
savedUrlString = [item objectForKey: #"itemUrl"];
// 2) Set: The url in string-format, excluding the html-appendix.
NSString *tempUrlString = savedUrlString;
// 3) Set: Format a url-string correctly. The html-file is located locally.
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:tempUrlString ofType:#”html”];
// 4) Set: Set an “NSData”-object of the url-sting.
NSData *htmlData = [NSData dataWithContentsOfFile:htmlFile];
// 5. Gets the path to the main bundle root folder
NSString *imagePath = [[NSBundle mainBundle] resourcePath];
// 6. Need to be double-slashes to work correctly with UIWebView, so change all “/” to “//”
imagePath = [imagePath stringByReplacingOccurrencesOfString:#"/" withString:#"//"];
// 7. Also need to replace all spaces with “%20″
imagePath = [imagePath stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
// Load: Loads the local html-page.
[webView loadData:htmlData MIMEType:#"text/html" textEncodingName:#"UTF-8" baseURL:[NSURL URLWithString:[NSString stringWithFormat:#"file:/%#//",imagePath]]];
Here's an alternative method:
Save the image you downloaded into your documents folder.
Then get that image's url. Then write a simple html file
using that image url in the IMG SRC tag.
NSLog(#"url=%#", fileURL); // fileURL is the image url in doc folder of your app
//get the documents directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the documents directory:
NSString *fileName = [NSString stringWithFormat:#"%#/toOpen.html",
documentsDirectory];
//create simple html file and format the url into the IMG SRC tag
NSString *content = [NSString stringWithFormat:#"<html><body><img src=%#></body></html>",fileURL];
//save content to the documents directory
[content writeToFile:fileName
atomically:NO
encoding:NSStringEncodingConversionAllowLossy
error:nil]; // now we have a HTML file in our doc
// open the HTML file we wrote in the webview
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"life.html"];
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[yourWebView loadRequest:request];
NSString *pathForFile = [[NSBundle mainBundle] pathForResource: #"fireballscopy" ofType: #"gif"];
NSData *dataOfGif = [NSData dataWithContentsOfFile: pathForFile];
[Web_View loadData:dataOfGif MIMEType:#"image/gif" textEncodingName:nil baseURL:nil];