I am trying to save the emojis to server and on later time receiving them.
I used the Following Code before
NSData *data = [strEmo dataUsingEncoding:NSNonLossyASCIIStringEncoding];
NSString *goodValue = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData *data1 = [strEmo dataUsingEncoding:NSUTF8StringEncoding];
NSString *goodValue = [[NSString alloc] initWithData:data encoding:NSNonLossyASCIIStringEncoding];
It generates the Hashcode for the Emoji. But decoding doesn't work. So I skipped the Idea of using this Code.
Then I used a third Party NSString+HTML.h Class. Which Sends and recieve emoji easily. But
Now the Problem is when there are so many emoji's the UIlabel on which I am showing the data, the emojis are distorted and If I saved 20 emojis it shows 12-13 only.
I have added the Pic for reference
where Yellow part is UIlabel with back colored Yellow
Buddy why are you changing the string in Data two times in a row just simply use this
NSString *uniText = [NSString stringWithUTF8String:[strEmo UTF8String]];
NSData *msgData = [uniText dataUsingEncoding:NSNonLossyASCIIStringEncoding];
NSString *readyString = [[NSString alloc] initWithData:msgData encoding:NSUTF8StringEncoding];
First convert your string into constant C characters then convert it into string using UTF8 encoding, now convert it into NSData as (7-bit verbose ASCII to represent all Unicode characters) using NSNonLossyASCIIStringEncoding encoding and then again string ready to send with unicode characters. Hope this should work as it is working fine in my code.
Related
I am trying to display a string in all sorts of items such as UIlabel,UItextview,Uitextfield etc.....I am trying to do like this in a manner like this
NSData *data1 = [title dataUsingEncoding:NSUTF8StringEncoding];
NSString *goodValue = [[NSString alloc] initWithData:data1 encoding:NSNonLossyASCIIStringEncoding];
label.text=goodvalue;
this is working sometimes for me ,but some times it returns null for the string like this "Youtube\ud83d\ude27\ud83d\ude2e\ud83d\ude2f\ud83d".Can anybody guide me on this?
Emoji characters are in unicode plane 1 and thus require more than 16 bits to represent a code point. Thus two UTF8 representations or one UTF32 representation. Unicode is actually a 21-bit system and for plane 0 characters (basically everything except emoji) 16 bits is sufficient and we get by using 16 bits. Emoji need more than 16 bits.
"Youtube\ud83d\ude27\ud83d\ude2e\ud83d\ude2f\ud83d". is invalid, it is part of a utf16 unicode escaped string, the last \ud83d is 1/2 of an emoji character.
Also, inorder to create a literal string with the escape character "\" the escape character must be escaped: "\\".
NSString *emojiEscaped = #"Youtube\\ud83d\\ude27\\ud83d\\ude2e\\ud83d\\ude2f";
NSData *emojiData = [emojiEscaped dataUsingEncoding:NSUTF8StringEncoding];
NSString *emojiString = [[NSString alloc] initWithData:emojiData encoding:NSNonLossyASCIIStringEncoding];
NSLog(#"emojiString: %#", emojiString);
NSLog output:
emojiString: Youtube😧😮😯
The emoji string can also be expressed in utf32:
NSString *string = #"\U0001f627\U0001f62e\U0001f62f";
NSLog(#"string: %#", string);
NSLog output:
string1: 😧😮😯
NSString *str = #"Happy to help you \U0001F431";
NSData *data = [str dataUsingEncoding:NSNonLossyASCIIStringEncoding];
NSString *valueUnicode = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData *dataa = [valueUnicode dataUsingEncoding:NSUTF8StringEncoding];
NSString *valueEmoj = [[NSString alloc] initWithData:dataa encoding:NSNonLossyASCIIStringEncoding];
_lbl.text = valueEmoj;
{ disclaimertxt = "<b>sample tex\U221a\U00a9t n\U221a\U00a9ewerv\U221a\U00a9e iew adults.</b>
\n<br/>
\n<br/>
\nthis is sample \U221a\U2020 an d\U221a\U00a9convertion of the language\U221a\U00a9reduction\U201a\U00c4\U00b6
\n ";
}
the above one is dictionary which contains above value with key disclaimertext
but in output the unicode characters is replaced with ?(C)" and "?A
and my code is :
NSData *messagedata = [dictionary[disclaimertxt] dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *string = [[NSString alloc]initWithData:messagedata encoding:NSUTF8StringEncoding];
so i want to display those unicode characters with respected text/value while loading in uiwebview.. plz give ur suggestions. in ios7 its working fine with desired output what i need. but when i run ios6 aim getting above outout.so plz find solution.
Follow these steps:
manually load the HTML from the page that doesn't include the meta tag, into a string.
Using string manipulation, insert your appropriate encoding meta tag into the manually loaded HTML
set the HTML in your web view to the modified string using loadHTMLString:
Use this to convert Unicode charaters to NSString:
char cString[] = "This isn\u2019t Test String";
NSData *data = [NSData dataWithBytes:cString length:strlen(cString)];
NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
Now use this string in your Webview.
I'm trying to encrypt/decrypt an NSString and return the original string in the end. Here's how I convert the string to a data object:
NSData *string_data = [string dataUsingEncoding:NSUTF8StringEncoding];
And after that data has been encrypted/decrypted I want it back to the original string by doing:
NSString *to_string = [NSString stringWithCString:[decrypted_data bytes] encoding:NSUTF8StringEncoding];
The encoding seems to match, but I still get a null when I try to print out to_string to the console. I've tried all sorts of encoding settings. It doesn't seem to work.
Use:
NSString *to_string = [[NSString alloc] initWithData:string_data encoding:NSUTF8StringEncoding];
It is not safe to use stringWithCString because the bytes buffer you get from NSData is not guaranteed to be null-terminated.
I have an application that receives messages from server.
Those messages may contain cyrillic characters. But when I transform received data into NSString I obtain only "\u041c\u0430\u043a" symbols instead of cyrrilic ones.
NSData *responceData = ....;
NSString* responceString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
How may I get correct symbols?
There's a much easier solution.
If your data has literal unicode escape sequences in it (that is, \u041c\0430\043a as pure ASCII characters, with no unicode escaping applied), then this is not the UTF-8 encoding of that string. You want NSNonLossyASCIIStringEncoding.
NSData *responseData = ....;
NSString* responseString = [[NSString alloc] initWithData:responseData encoding:NSNonLossyASCIIStringEncoding];
responseString will now be exactly what you expect.
I'm receiving a json data from server with some strings inside. I use SBJson https://github.com/stig/json-framework to get them.
However when I output some strings at UILabel they look like this: \u0418\u043b\u044c\u044f\u0411\u043b\u043e\u0445 (that's Cyrillic symbols)
And it's all right with latin characters
How can I decode it into normal symbols?
Some code about getting data:
NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *stringData = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSDictionary *object = [parser objectWithString:stringData error:nil];
NSString *comments = [NSString stringWithFormat:#"%#",[object valueForKey:#"comments"]];
String comments has a very special format, so I'm doing some operation like stringByTrimmingCharactersInSet ,
stringByReplacingOccurrencesOfString ,
NSArray* json_fields = [comments_modified componentsSeparatedByString: #";"];
to get a final data.
This is an example of received data after some trimming/replacing (it's NSString* comments):
"already_wow"=0;"date_created"="2012/03/1411:11:18";id=41598;name="\U0418\U043b\U044c\U044f\U0411\U043b\U043e\U0445";text="\U0438\U043d\U0442\U0435\U0440\U0435\U0441\U043d\U043e";"user_id"=1107;"user_image"="user_image/a6/6f/96/21/20111220234109510840_1107.jpg";"user_is_deleted"=0;username=IlyaBlokh;"wow_count"=0;
You see that fields text and name are encoded
If I display them on the view (at UILabel for example), they still look the same
maybe the string returned is just the unicode string representation (ascii string), that's means not returned the content encoded with utf8, to try this with NSASCIIStringEncoding to get stringData