I have an NStextView that loads a description from a JSON source. The NSTextView loads a different string every time the user clicks a button. These descriptions sometimes have a URL in them which is rendered as plain text and not as a clickable URL. It loads just fine, it's just that URL's aren't recognized. I've set up automatic link detection to no avail. I also tried AttributedString which didn't work, but that may be my incompetence (new to this.)
Here's the code:
if ([firstCommenter isEqualToString:playerID]) {
NSString *commentBody = [[allComments objectAtIndex:0] valueForKeyPath:#"body"];
[shotDescriptionTextView setString:commentBody];
}
Refer Automatic Link Detection in an NSTextView. Hope helpful
For even better solution without need of any category look here
TL;DR:
[shotDescriptionTextView setEditable:YES];
[shotDescriptionTextView checkTextInDocument:nil];
[shotDescriptionTextView setEditable:NO];
Related
I need to take an existing pdf file and programmatically fill in a list of form fields with text and then save the pdf without ever displaying it to the user.
For instance, if the pdf file contains fields named "LastName", and "FirstName" I would like to set the value of "FirstName" to "Louis" and then save the file.
I've been searching for a long time and can't find any guidance on even where to start since the iOS documentation (and most of the questions on here) seem geared towards displaying or creating pdf content instead of modifying it.
EDIT:
My main question is: Is it possible to open a pdf stream (I know how to do this) and copy each existing pdf dictionary item into a new pdf? I have not been able to find a way to write the dictionary items to a pdf.
I doubt that kind of functionality will ever be in the iOS frameworks. The reason most of the related info you can find "seem[s] geared towards displaying or creating pdf content instead of modifying it" is because that's what the vast majority of use cases will want or need for PDF functionality.
You'll need to find a 3rd party library that can open up PDFs, fill out the AcroForm fields, and then stamp out a PDF. I use iText on Java (there is also iTextSharp for C#) but I don't know of anything for Objective-C.
Once you find that library, you'll need to integrate it into your project. There are undoubtedly several related questions/answers here on SO for whatever version of the SDK you're using.
This would be easier to do with a HTML page. If you wish to use a HTML page instead of a .pdf form then thius is how you would go about doing it:
[field1 setText:#"Field 1 Text"];
[field2 setText:#"Field 2 Text"];
NSString *result;
result = [webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:#"$('#field1').val('%#');", field1.text]];
result = [webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:#"$('#pfield2').val('%#');", field2.text]];
result = [webView stringByEvaluatingJavaScriptFromString:#"$('#submitbutton').click();"];
You would need to create two UILabels or UITextFields and call them "field2" and "field2" in your .h file. You can then find the ID of the field you need to replace e.g. #field1 and then put it where I have put "#field1" and again for the second field where I have put "#field2". There also needs to be a UIWebView with the page already loaded. This code is to be used after the UIWebView page has been loaded. Maybe do the following:
-(void)webViewDidFinishLoad:(UIWebView *)webView {
// Insert above code here
}
You probably need a full understanding of Javascript if you want to do this for the whole form, but this should get you started.
Hope that helps you.
I'm creating an iOS5 app (programmed in Objective-C) which provides a couple of functions. One of them is to allow a user to fill out a text field with JavaScript. When the user presses a "Test" button, I want it to save to a specific JS file and move to a new view, displaying an HTML page that will display the results of that JavaScript on a canvas element.
Unfortunately for me, I have no idea how to save to a JS file for a text field. Nor do I know if this is actually the best way to achieve the results I'm after.
So can anyone tell me the code I'd need to place in the IBAction of my test button to save the file, or if there is a better way to get the user's script into the HTML file with the canvas element?
You have some options to do that.
Add a callback in WebView is possible only in desktop apps, but you can make a workaround.
1- Set a handler to click in javascript;
2- This handler parse the value via windows.location (trying to change the current url);
3- In UIWebviewDelegate set webView:shouldStartLoadWithRequest:navigationType: to recognize this values parsed by javascript and returning NO (canceling the url change).
After you have the code typed by user, is easier pass to the new one UIWebView. You can save the file via NSData or other class and load in by the path, or you can parse directly the code to be showed via NSString.
EDIT
I, still, belive what I said is what you want, but with a little more info. Yes, 3 NSString probably solve your problem. You even can call eval in javascript, via objective-c and parse user code too. Those logic ideas are a good approaching. You can choose the easier for you.
There are more info in this another Q&A
You can use html 5 local storage for that.
I am using iOS 4.3 & was wondering if there is any way that I can access the Safari's "Reader" feature through which webpages are removed of ads & other riff raff & the content takes the center stage.
If one opens any article in Safari (on say Wikipedia website), then a "Reader" button appears on the URL bar. Clicking on it presents a new window presenting the content beautifully.
How can I leverage this this functionality in iOS through UIWebView ?
PS: I know there is something called Readability Project. But I have no idea how to use this through UIWebView. Also for some websites Safari's Reader takes a call not to enable "Reader" feature, maybe it has no sufficient confidence?
Important: THIS ANSWER NO LONGER WORKS!
Readability shut down on September 30, 2016.
Here is something they recommend as a replacement:
https://mercury.postlight.com/web-parser/
Keeping the answer as a historical reference
--- Original answer ---
You can use Readability mobilizer for this. You will get a cleaned up version of any article, in the Readability styling:
http://www.readability.com/m?url=http://{URLOFTHEARTICLE}
Just prepare the URL and load it in your UIWebView. Here is how it looks in action:
http://www.readability.com/m?url=http%3A%2F%2Fwww.cnn.com%2F2013%2F01%2F11%2Fshowbiz%2Ftv%2Fgolden-globes-tv-vineyard%2Findex.html%3Fhpt%3Dhp_abar
Apple is making a pretty big deal about the inclusion of "Reader" in iOS 5. I'm assuming by the noise it's not available in 4.3
re: How to use through UIWebView
I can't find any mention of it in the Web Content Guide.
There's nothing about it in the UIWebView class reference.
And there's nothing in QA1630.
Dont parse HTML natively on iOS, I have done it before and its a messy business. Either create your own web service to do all the nasty work or look into using readability (readability.com) they provide an API.
There is also an open source ruby, python and php readability port that you can find here
https://github.com/iterationlabs/ruby-readability
https://github.com/gfxmonk/python-readability
http://code.fivefilters.org/p/php-readability/source/tree/master/
For you ruby enthusiasts, readability is also available as a gem, just google it.
Actually reader button do a bit of analysis where it parse the HTML Page and then it sees a clear body tag to parse. If that plugin is able to extract the exact body it will enable the reader button (My understanding from the readability source code). Now to implement the same for webview you just need to embed java script in your code (this java script is already available in the readability source code) and then you can achieve the same effect.
But I suspect the future plan from apple for the same. Because they can not just let anyone else do this content extraction with the huge business opportunity associated with iCloud with the combination of readability.
If you want you can simple extract the HTML from UIWebView and then extract the body and use it for your purpose. It's not a very rocket science to extract.
For analysis point of view, just have randomly some 10 HTML pages with Reader button enabled, you will see the core cotent belongs to body only and rest of the add, header, footer are separated.
I believe this is the time to re-invent the web content we use, and this is the perfect example of doing the same.
You can even do this by injecting javascript.
#define readJS #"(function(){window.baseUrl='https://www.readability.com';window.readabilityToken='';var s=document.createElement('script');s.setAttribute('type','text/javascript');s.setAttribute('charset','UTF-8');s.setAttribute('src',baseUrl+'/bookmarklet/read.js');document.documentElement.appendChild(s);})()"
And then when your webpage finishes loading
- (void)webViewDidFinishLoad:(UIWebView *)webview
{
[webview stringByEvaluatingJavaScriptFromString:readJS];
You can do it in iOS9.
first import SafariServices:
#import <SafariServices/SafariServices.h>
Afterwards we are instantiating SFSafariViewController and adding it as a subview. We have two options doing so:
Creating with only base URL
Creating with bas URL as well as entering 'Reading Mode' in case it is available
NSString *sURL = #"http://google.com";
NSURL *URL = [NSURL URLWithString:sURL];
SFSafariViewController *safari = [[SFSafariViewController alloc] initWithURL:URL]; // 1.
SFSafariViewController *safari = [[SFSafariViewController alloc] initWithURL:URL entersReaderIfAvailable:YES]; // 2.
[self presentViewController:safari animated:YES completion:nil];
I have a WebView that I want to save as a WebArchive. I just want to save the HTML part and not the referenced images. When I do the following, it appears to be creating a WebArchive with the images embedded as well.
[[[[[sourceSignatureWebView mainFrame] dataSource] webArchive] data]
writeToFile:#"MyWebarchive.webarchive" atomically:YES];
Besides the fact that I don't want to embed the images, Safari seems to have trouble displaying the file and is showing a lot of binary gibberish wrapped around the HTML part I want. I know I can use textutil to create the file, but if possible would like to do it all inside Cocoa.
Does anyone know if this is doable? Any ideas would be much appreciated. Thanks!
How about something like this:
WebDataSource *dataSource = [[sourceSignatureWebView mainFrame] dataSource];
WebArchive *archive = [[WebArchive alloc]
initWithMainResource:[dataSource mainResource]
subresources:nil
subframeArchives:nil];
[[archive data] writeToURL…
Or are you actually after an HTML file rather than web archive?
I'm trying to print a PDFDocument that I am constructing from a series of images. In case it matters, I'm doing all of this from within a Mozilla plugin.
I create the PDFDocument, and put it into a PDFView, then I call
[printView printWithInfo: [NSPrintInfo sharedPrintInfo] autoRotate: YES];
The print dialog comes up (as a separate window, instead of panel. I assume that that comes from being inside a mozilla window, so I wasn't too worried about it. The dialog shows my document, and I can page through it correctly, and everything looks good.
However, when I hit "Print" the dropdown with "Layout" etc becomes empty, and the view under that becomes empty. The window doesn't disappear, and the document doesn't print. Hitting Cancel does exactly the same thing. The only thing I can do then is force-quit Mozillla.
I based the program off of PDFKitLinker2 from the apple dev site, and that program works. But I can't see any significant differences between it and my version.
Any suggestions on where to look?
thanks.
EDIT: Yes, I know that this is pretty much an exact duplicate of Printing Off-screen PDFViews but that never got a sufficient answer... (And I didn't notice it until just now...)
Sounds like you have a memory management issue here. Have you checked the console log to see if there's an exception being thrown? How are you creating your PDFView?
But why not do it the way WebKit does it?
Specifically, declare a category on PDFDocument
#interface PDFDocument (PDFSecretsIKnowViaWebKit)
- (NSPrintOperation *)getPrintOperationForPrintInfo:(NSPrintInfo *)printInfo autoRotate:(BOOL)doRotate;
#end
Then when you want to print your PDFDocument simply get an NSPrintOperation from it and run it.
NSPrintOperation *op = [myPDFDoc getPrintOperationForPrintInfo:info autoRotate:YES];
[op runOperation];
// [op runOperationModalForWindow:delegate:didRunSelector:contextInfo:] if you have a window to attach it to
This works for me too. I've verified that getPrintOperationForPrintInfo:autoRotate: exists and appears to work correctly on 10.4, 10.5 and 10.6.