I am getting html content as a string in my webservice response which contains " " in it. When I display that data in webview, " " is converted in junk character. Please let me know how to solve it.
You have to read the string as NSUTF8 encoded string and then pass the string to web view using "loadHTML" method mentioned in UIWebView.
Not only that, if you want to display special characters like copy right, double quotes etc or other language characters in the HTML, you have to use UTF8 encoding.
Use the stringByReplacingPercentEscapesUsingEncoding: method of NSString
like :
NSString *decoded = [yourString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
Also to remove use
[yourString stringByReplacingOccurrencesOfString:#" " withString:#" "];
stringByReplacingOccurrencesOfString is deprecated from ios 9
let decoded = yourString.stringByAddingPercentEncodingWithAllowedCharacters(.URLHostAllowedCharacterSet())
Related
I wants to remove specific characters or group substring from NSString.
mean
NSString *str = #" hello I am #39;doing Parsing So $#39;I get many symbols in &my response";
I wants remove #39; and $#39; and & (Mostly these three strings comes in response)
output should be : hello I am doing Parsing So i get many symbols in my response
Side Question : I can't write & #39; without space here, because it converted in ' <-- this symbol. so i use $ in place of & in my question.
you should use [str stringByReplacingOccurrencesOfString:#"#39" withString:#""]
or you need replace strings of concrete format like "#number"?
try below code ,i think you got whatever you want simply change the charecterset,
NSString *string = #"hello I am #39;doing Parsing So $#39;I get many symbols in &my response";
NSCharacterSet *trim = [NSCharacterSet characterSetWithCharactersInString:#"#39;$&"];
NSString *result = [[string componentsSeparatedByCharactersInSet:trim] componentsJoinedByString:#""];
NSLog(#"%#", result);
In my app when i tried to set the attached string to the UIlabel special characters are not displaying. Please help me in solving this issue.
Thanks
If you have a Euro character on your keyboard, you can use it directly:
[lLabel setText:#"€"];
Otherwise use the Unicode escape:
[lLabel setText:#"\u20AC"];
ADDED The Foundation framework and the NSString class does not know escaping sequences like "¿euro¿", so you have to replace it manually:
NSString *s = #"abc ¿euro¿ def";
NSString *d = [s stringByReplacingOccurrencesOfString:#"¿euro¿" withString:#"\u20AC"];
//Conevrt the string utf-8 format
[yourstringvariabel UTF8String];
Using NSISOLatinStringEncoding solved this issue.
Covert the string to UTF-8 and then set it to label text.
[label setText:[NSString stringWithFormat:#"%s",[#"your_string" UTF8String]]];
[EDIT]
I tested this and works fine without converting string to UTF-8!
label.text = #"¿euro¿";
Please make sure that your server's response set to UTF-8 and it should fix it. I had the same issue where I was getting strings from server in UTF8 - NSUTF8StringEncoding! I changed it and everything else worked fine!
For example I do it like:
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
request.defaultResponseEncoding = NSUTF8StringEncoding;
i have following string coming in the json response.
"Gas-Heizung-Sanit\u00e4r" so how to display it. i want to display that \u00e4 as a german character..
NSString *str = "Gas-Heizung-Sanit\u00e4r";
NSLog(#"%c",str);
it only prints the german character.
the following works
NSString *str = #"Gas-Heizung-Sanit\u00e4r";
NSLog(#"%#",str);
You forgot the # on the string and also the %c is for a character, you should use the %# for a string
I have an Image named "John and Tony.png".When I tried to download the image from my code with this name via an http request no image is shown.But if I remove the space between the words like "JohnandTony.png" then there is no problem to download the image.But I can't want to remove the spaces.Is there any way to do that?
Thanx
you need to escape the spaces with "%20"s.
NSString *imageStr = #"http://whatever.com/John and Tony.png";
NSString *imageStrEscaped = [urlStr stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
Then use this string as the url.
I think you are creating the imagestring the wrong way. Try the following:
NSString *imagestring = #"28.162.10.2/images/John and Tony.png";
imagestring = [imagestring stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
Your URL doesn't must contain spaces.
If you want let this name, you must use the %20 to replace the spaces like that:
"John%20and%20Tony.png"
I'd like to make a URL click able in the email app. The problem is that a parameterized URL breaks this because of "&" in the URL. The body variable below is the problem line. Both versions of "body" are incorrect. Once the email app opens, text stops at "...link:". What is needed to encode the ampersand?
NSString *subject = #"This is a test";
NSString *encodedSubject =
[subject stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
//NSString *body = #"This is a link: <a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>"; //original
NSString *body = #"This is a link: <a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>"; //have also tried &
NSString *encodedBody =
[body stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *formattedURL = [NSString stringWithFormat: #"mailto:myname#somedomain.com?subject=%#&body=%#", encodedSubject, encodedBody];
NSURL *url = [[NSURL alloc] initWithString:formattedURL];
[[UIApplication sharedApplication] openURL:url];
the ampersand would be %26 for HEX in URL Encoding standards
I've been using -[NSString gtm_stringByEscapingForURLArgument], which is provided in Google Toolbox for Mac, specifically in GTMNSString+URLArguments.h and GTMNSString+URLArguments.m.
You can use a hex representation of the character, in this case %26.
you can simply use CFURLCreateStringByAddingPercentEscapes with CFBridgingRelease for ARC support
NSString *subject = #"This is a test";
// Encode all the reserved characters, per RFC 3986
// (<http://www.ietf.org/rfc/rfc3986.txt>)
NSString *encodedSubject =
(NSString *) CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)subject,
NULL,
(CFStringRef)#"!*'();:#&=+$,/?%#[]",
kCFStringEncodingUTF8));
You use stringByAddingPercentEscapesUsingEncoding, exactly like you are doing.
The problem is that you aren't using it enough. The format into which you're inserting the encoded body also has an ampersand, which you have not encoded. Tack the unencoded string onto it instead, and encode them (using stringByAddingPercentEscapesUsingEncoding) together.
<a href='http://somewhere.com/two.woa/wa?id=000¶m=0'>click me</a>
Is correct, although ‘&’ is more commonly used than ‘&’ or ‘,’.
If the ‘stringByAddingPercentEscapesUsingEncoding’ method does what it says on the tin, it should work(*), but the NSString documentation looks a bit unclear on which characters exactly are escaped. Check what you are ending up with, the URL should be something like:
mailto:bob#example.com?subject=test&body=Link%3A%3Ca%20href%3D%22http%3A//example.com/script%3Fp1%3Da%26amp%3Bp2%3Db%22%3Elink%3C/a%3E
(*: modulo the usual disclaimer that mailto: link parameters like ‘subject’ and ‘body’ are non-standard, will fail in many situations, and should generally be avoided.)
Once the email app opens, text stops at "...link:".
If ‘stringByAddingPercentEscapesUsingEncoding’ is not escaping ‘<’ to ‘%3C’, that could be the problem. Otherwise, it might not be anything to do with escapes, but a deliberate mailer-level restriction to disallow ‘<’. As previously mentioned, ?body=... is not a reliable feature.
In any case, you shouldn't expect the mailer to recognise the HTML and try to send an HTML mail; very few will do that.
Example of use of %26 instead of & without this attributes arrived in PHP as an array!
var urlb='/tools/lister.php?type=101%26ID='+ID; // %26 instead of &
window.location.href=urlb;