I am trying to copy an html data to clipboard on MAC. But when i check the clipboard using (Finder-> Edit Menu -> Show clipboard) it shows nothing. I want the formatted data to be pasted as it is. Below is the code i am using:
NSPasteboard *pb = [NSPasteboard generalPasteboard];
NSAttributedString *htmlString = [[NSAttributedString alloc]initWithString:#"<html><body><b>abcdefgh</b></body></html>"];
NSDictionary *documentAttributes = [NSDictionary dictionaryWithObjectsAndKeys:NSHTMLTextDocumentType, NSDocumentTypeDocumentAttribute, nil];
NSData *htmlData = [htmlString dataFromRange:NSMakeRange(0, htmlString.length) documentAttributes:documentAttributes error:NULL];
[pb declareTypes:[NSArray arrayWithObject:NSHTMLPboardType] owner:nil];
[pb setData:htmlData forType:NSHTMLPboardType];
I will appreciate any help. Thanks!
Update:
To get the html formatted string in clipboard, i tried converting it to Attributed string and then from attributed string to rtf data, it sets the data to clip board perfectly, but when i try to paste the data in html editor ( http://htmleditor.in/ ) it loses some formatting like colour.
NSPasteboard *pb = [NSPasteboard generalPasteboard];
NSString *htmlString = #"<HTML> <BODY> <P><FONT COLOR=\"RED\"><UL><LI>fhhj</LI><LI>juil</LI></UL><B>hello</B> <i>html</i></FONT></P> </BODY></HTML>";
NSDictionary *documentAttributes = [NSDictionary dictionaryWithObjectsAndKeys:NSHTMLTextDocumentType, NSDocumentTypeDocumentAttribute, NSCharacterEncodingDocumentAttribute,[NSNumber numberWithInt:NSUTF8StringEncoding], nil];
NSAttributedString* atr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding] options:documentAttributes documentAttributes:nil error:nil];
NSData *rtf = [atr RTFFromRange:NSMakeRange(0, [atr length])
documentAttributes:nil];
[pb declareTypes:[NSArray arrayWithObject:NSRTFPboardType] owner:nil];
[pb setData:rtf forType:NSRTFPboardType];
How to preserve color when pasting to html editor? Text is shown with color on clipboard then why it isn't pasted with color on html editor (http://htmleditor.in/)?
I finally got the issue, the functionality is browser dependent(i don't understand the reason though).
If i paste to the site in safari, it doesn't lose any formatting and works well, but if i paste the same text to same site on chrome, it loses some formatting.
Edit
If you want it copied with the attributes applied, then use
NSAttributedString *attrString = [[NSAttributedString alloc] initWithHTML:#"YOUR HTML CODE" documentAttributes:NULL];
[pb setData:attrString forType: NSPasteboardTypeRTF];
Related
I am using the default html parser to parse the html text:
NSData *data = [receivedText dataUsingEncoding:NSUTF8StringEncoding];
NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithData:data
options:#{
NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: #(NSUTF8StringEncoding)}
documentAttributes:nil error:nil];
But when the received html text contains a iframe tag, my app crashes. It gives a bad access code issue.
My html text is
<p dir="ltr">iFrame tag test<iframe src='http://www.test.com/'></iframe></p>
Is there something wrong in the code? App works fine when I replace NSHTMLTextDocumentType with any other type, but I need to use this type only.
I am using UITextView to display it.
Use UIWebView. iframe tags may not work with UITextView
I'm trying to write a very simple iOS app that will parse a webpage (http://arxiv.org/list/cond-mat/recent) and display a simplified version of it. I chose to use TFHpple to parse this page. I want to get titles of papers and display them in the TableViewController. The HTML container for paper descriptions looks like:
<div class="list-title">
<span class="descriptor">Title:</span> Encoding Complexity within Supramolecular Analogues of Frustrated Magnets
</div>
Function that I use to parse and get the values is the following (thanks to raywenderlich.com):
- (void) loadPapers{
NSURL *papersURL = [NSURL URLWithString:#"http://www.arxiv.org/list/cond-mat/recent"];
NSData *papersHTMLData = [NSData dataWithContentsOfURL:papersURL];
TFHpple *papersParser = [TFHpple hppleWithHTMLData:papersHTMLData];
NSString *papersXpathQueryString = #"//div[#class='list-title']";
NSArray *papersNodes = [papersParser searchWithXPathQuery:papersXpathQueryString];
NSMutableArray *newPapers = [[NSMutableArray alloc] initWithCapacity:0];
for (TFHppleElement *element in papersNodes){
Paper *paper = [[Paper alloc] init];
[newPapers addObject:paper];
paper.title = [[element firstChild] content];
}
_objects = newPapers;
[self.tableView reloadData];
}
This function is supposed to parse the entire HTML page and return data into TableView. However, when I try it returns empty objects into the paperNodes array. Basically, the number of the elements is correct (~25), but they're all empty and I am not sure why.
Any help is greatly appreciated! Thanks!
I have rewritten your code with HTMLKit. It looks like this:
NSURL *papersURL = [NSURL URLWithString:#"http://www.arxiv.org/list/cond-mat/recent"];
NSData *papersHTMLData = [NSData dataWithContentsOfURL:papersURL];
NSString *htmlString = [[NSString alloc] initWithData:papersHTMLData encoding:NSUTF8StringEncoding];
HTMLDocument *document = [HTMLDocument documentWithString:htmlString];
NSArray *divs = [document querySelectorAll:#"div[class='list-title']"];
for (HTMLElement *element in divs) {
NSLog(#"%#", element.textContent);
}
Back to your question in the comment:
Could you give some useful links that you find good to learn about HTMLKit?
You can check out the examples on the project's GitHub page. The source code is documented and using it is relatively straightforward. If you have basic HTML & CSS experience then using HTMLKit would be just as easy. Unfortunately there are no other resources it to learn it yet.
Probably the [element firstChild] is returning nil. I suggest you add some NSLog statements to track the data extraction and help you pinpoint the error.
I made a UITableView which each cell contains a UILabel. The input is some HTML string (like a website page source), eg from Example Domain:
<body>
<div>
<h1>Example Domain</h1>
<p>This domain is established to be used for illustrative examples in documents. You may use this
domain in examples without prior coordination or asking for permission.</p>
<p>More information...</p>
</div>
</body>
but much larger, over 4000 characters.
I want to convert those HTML strings to plain string, for above example it will be:
Example Domain
This domain is established to be used for illustrative examples in documents. You may use this domain in examples without prior
coordination or asking for permission.
More information...
and then display them in UILabel. Currently I'm using this way:
NSData *htmlData = [htmlString dataUsingEncoding:NSUnicodeStringEncoding];
NSAttributedString *attrString = [[NSAttributedString alloc]
initWithData:HTMLData
options:#{
NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType
}
documentAttributes:nil
error:nil];
NSString *plainString = attrString.string;
This works fine, but the performance is very bad, which causes flickering when scrolling through the tableView. Is there any more efficient way to do this?
Use Below code:
NSString * htmlString = ...;
NSAttributedString * attrStr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:#{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
UILabel * myLabel = [UILabel alloc] init];
myLabel.attributedText = attrStr;
I am making an app which will give me the latest news, and the image. I achieve the text bit by making a scanner like this.
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
/* set headers, etc. on request if needed */
[request setURL:[NSURL URLWithString:#"http://stackoverflow.com/questions/22671347/nsuinteger-should-not-be-used-in-format-strings"]];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:NULL error:NULL];
NSString *html = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSScanner *scanner = [NSScanner scannerWithString:html];
NSString *token = nil;
[scanner scanUpToString:#"<p>" intoString:NULL];
[scanner scanUpToString:#"</p>" intoString:&token];
int length = 3;
token = [token substringFromIndex:length];
textView.text = token;
Now I was wondering if I could use the same type of code to scan the website to find the first image and put it an image view. Also it don't have to be same type of code , post what ever you know and any method.
Summary is.
Want a piece of code that will scan a webpage, pick up the first image and place it in a image view.
Thanks for the people who take the time to help me.
THANKS AGAIN!!!
BYE!!!
NSScanner its not a HTML parser only intended for scanning values from NSString object. If you doing the odd scan you probably could get away with it, but it doesn't seem like...
The CORRECT approach is to use Libxml2 library included in Xcode which is only written is C which doesn't have any Objective-C/Swift wrapper. Libxml2 is the XML C parser and toolkit developed for the Gnome project. Alternatively i would recommend using open-source project such as HTMLReader. Its a HTML parser with CSS selectors in Objective-C and Foundation. It parses HTML just like a browser and is all written in Objective-c.
Example (using HTMLReader):
HTMLDocument *document = [HTMLDocument documentWithString:html]; // get your html string
NSLog(#"IMG: %#", [document firstNodeMatchingSelector:#"img"].textContent); // => image returned here
To find images just change the tag to < img > and your set!!
IF your using Libxml2 take a look at HTMLparser.c header file to parse and retrieve HTML ltags
I want to add an image in the composer such that when i open the mail composer ,the image should be there in the message body.
I do not want an attachment.
And i also do not want to convert the image to base64.Is there any other way???
Thank you.
hello i have work using below code its work perfectly in iphone and ipad .i have attacha image file using this code. its working code.
- (void)createEmail {
//Create a string with HTML formatting for the email body
NSMutableString *emailBody = [[[NSMutableString alloc] initWithString:#"<html><body>"] retain];
//Add some text to it however you want
[emailBody appendString:#"<p>Some email body text can go here</p>"];
//Pick an image to insert
//This example would come from the main bundle, but your source can be elsewhere
UIImage *emailImage = [UIImage imageNamed:#"myImageName.png"];
//Convert the image into data
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(emailImage)];
//Create a base64 string representation of the data using NSData+Base64
NSString *base64String = [imageData base64EncodedString];
//Add the encoded string to the emailBody string
//Don't forget the "<b>" tags are required, the "<p>" tags are optional
[emailBody appendString:[NSString stringWithFormat:#"<p><b><img src='data:image/png;base64,%#'> </b></p>",base64String]];
//You could repeat here with more text or images, otherwise
//close the HTML formatting
[emailBody appendString:#"</body></html>"];
NSLog(#"%#",emailBody);
//Create the mail composer window
MFMailComposeViewController *emailDialog = [[MFMailComposeViewController alloc] init];
emailDialog.mailComposeDelegate = self;
[emailDialog setSubject:#"My Inline Image Document"];
[emailDialog setMessageBody:emailBody isHTML:YES];
[self presentModalViewController:emailDialog animated:YES];
[emailDialog release];
[emailBody release];
}
hello i have work using below code its work perfectly in iphone and ipad .i have attacha image file using this code. its working code.
And ios 3.0 or later directly insert image at attach in iphone
UIImage * image = [UIImage imageWithContentsOfFile:imagePath];
[composer addAttachmentData:UIImageJPEGRepresentation(itemImage, 1) mimeType:#"image/jpeg" fileName:#"MyFile.jpeg"];
//To Append an attachment:
//Create a string with HTML formatting for the email body
NSMutableString *emailBody = [[NSMutableString alloc] initWithString:#"<html><body>"] ;
//Add some text to it however you want
[emailBody appendString:#"<p>Some email body text can go here</p>"];
//Pick an image to insert
//This example would come from the main bundle, but your source can be elsewhere
NSString *filePath = #"";/*you file path*/
//Convert the file into data
NSData *attachmentData = [NSData dataWithContentsOfFile:filePath];
//Create a base64 string representation of the data using NSData+Base64
NSString *base64String = [attachmentData base64EncodedString];
//Add the encoded string to the emailBody string
//Don't forget the "<b>" tags are required, the "<p>" tags are optional
[emailBody appendString:[NSString stringWithFormat:#"<p><b><img src='data:image/png;base64,%#'> </b></p>",base64String]];
//You could repeat here with more text or images, otherwise
//close the HTML formatting
[emailBody appendString:#"</body></html>"];
NSLog(#"%#",emailBody);
//Create the mail composer window
MFMailComposeViewController *email = [[MFMailComposeViewController alloc] init];
email.mailComposeDelegate = self;
[email setSubject:#"My Inline Document"];
[email setMessageBody:emailBody isHTML:YES];
[self presentModalViewController:email animated:YES];
[email release];
[emailBody release];