Parse doesn't support direct saving of NSAttributedStrings. Converting to HTML isn't the most straightforward. Anyone have a friendly method for storing NSAttributedStrings (font & superscript) to Parse.com?
Thanks guys, decided to go with saving an rtf string onto Parse, based off #Wain's comment.
// convert NSAttributedString to RTFString and save to Parse
PFObject *note = [PFObject objectWithClassName:#"Note"];
NSAttributedString *noteAttributedText = self.noteTextView.attributedText;
NSDictionary *documentAttributes = [NSDictionary dictionaryWithObjectsAndKeys:NSRTFTextDocumentType,NSDocumentTypeDocumentAttribute, nil];
NSData *rtfData = [noteAttributedText dataFromRange:NSMakeRange(0, noteAttributedText.length) documentAttributes:documentAttributes error:NULL];
NSString *rtfString = [[NSString alloc] initWithData:rtfData encoding:NSUTF8StringEncoding];
note[#"noteTextAsRTFString"] = rtfString;
// convert RTFString to NSAttributedString after pulling from Parse
NSString *rtfString = [pfObject objectForKey:#"noteTextAsRTFString"];
NSData *data = [rtfString dataUsingEncoding:NSUTF8StringEncoding];
NSAttributedString *noteAttributedText = [[NSAttributedString alloc] initWithData:data options:#{NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType} documentAttributes:nil error:nil];
Related
I am looking for solution where i want to store English + Arabic + Emoji Character to store to Database and retrieve it back while display.
Below is the code what i have used to support Emoji, after that Arabic text is not showing.
+(NSString *)emojiToSave:(NSString *)str
{
NSData *dataForEmoji = [str dataUsingEncoding:NSNonLossyASCIIStringEncoding];
NSString *encodevalue = [[NSString alloc]initWithData:dataForEmoji encoding:NSUTF8StringEncoding];
return encodevalue;
}
+(NSString *)emojiToDisplay:(NSString *)str
{
NSData *msgData = [str dataUsingEncoding:NSUTF8StringEncoding];
NSString *goodMsg = [[NSString alloc] initWithData:msgData encoding:NSNonLossyASCIIStringEncoding];
return goodMsg;
}
Can anyone pls suggest to give support for Arabic what change i should do?
Thanks in advance.
Try convert it into base64 code, then insert base64 code to database:
//Original string to base64 string
NSString *emojiString = #"مرحبا 😀 Hello";
NSData *emojiData = [emojiString dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64String = [emojiData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
//Base64 string to original string
NSData *base64Data = [[NSData alloc] initWithBase64EncodedString:base64String options:NSDataBase64DecodingIgnoreUnknownCharacters];
NSString *originalString =[[NSString alloc] initWithData:base64Data encoding:NSUTF8StringEncoding];
NSLog(#"Result: %#",originalString);
Output:
You have to use an encoding that supports emoji and arabic characters. ASCII doesn't support that.
You should use NSUTF8StringEncoding everywhere, and you're fine.
Why are you using ASCII anyways? Why are you converting a string to an NSData and then back to NSString again? It doesn't make sense.
I have a string:
NSString *str1 = #"\u2022 You were held in custody for a longer
period of time than may have been necessary.";
I am converting it into an HTML string using this code :
- (NSString *)HTMLString {
NSDictionary * const exportParams = #{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType};
NSAttributedString *attributed = [[NSAttributedString alloc] initWithString:str1];
NSData *htmlData = [attributed dataFromRange:NSMakeRange(0, attributed.length) documentAttributes:exportParams error:nil];
return [[NSString alloc] initWithData:htmlData encoding:NSUTF8StringEncoding];
}
But bullet points are not showing in the HTML string. It's showing a ? instead of bullet point. Please tell me any solution.
Please try below code -
- (NSString *)HTMLString {
NSDictionary * const exportParams = #{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType};
letterString = [letterString stringByReplacingOccurrencesOfString:#"\u2022" withString:#"•"];
NSAttributedString *attributed = [[NSAttributedString alloc] initWithString:letterString];
NSData *htmlData = [attributed dataFromRange:NSMakeRange(0, attributed.length) documentAttributes:exportParams error:nil];
return [[NSString alloc] initWithData:htmlData encoding:NSUTF8StringEncoding];
}
I can convert from rtf string to attributed string using following:
NSAttributedString *attributedStr = [[NSAttributedString alloc] initWithData:data options:#{NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType} documentAttributes:nil error:nil];
Now how can i convert back from attributedString to rtf string?
You want to use -dataFromRange:documentAttributes:error:
NSAttributedString *str = [[NSAttributedString alloc] initWithString:#"YOLO" attributes:nil];
NSData *data = [str dataFromRange:(NSRange){0, [str length]} documentAttributes:#{NSDocumentTypeDocumentAttribute: NSRTFTextDocumentType} error:NULL];
[data writeToFile:#"/me.rtf" atomically:YES];
Of course you'd want to have some attributes instead of "YOLO", but you get the idea.
Also, if you're looking to simply write this to disk, then fileWrapperFromRange:documentAttributes:error:
might even be a better option. You can find more about reading and writing from the Attributed String Programming Guide
I am trying to parse the file location from the following so that image can be displayed. How do I do it?
[
{
"title":"testing barcode display",
"body":"lets see if it renders \r\n\r\n",
"author":"1",
"created":"1373490143",
"nid":"5",
"Barcode":"<img class=\"barcode\" typeof=\"foaf:Image\" src=\"http://mysite.com/sites/default/files/barcodes/95b2d526b0a8f3860e7309ba59b7ca11QRCODE.png\" alt=\"blahimage\" title=\"blahimage\" />"
}
]
I have a table view which displays the title tag. I need to display the entire content in the detail view. I can do everything except the Barcode tag. Please advise.
If it should be done, parse the xml
NSString *xmlString = #"<img class=\"barcode\" typeof=\"foaf:Image\" src=\"http://mysite.com/sites/default/files/barcodes/95b2d526b0a8f3860e7309ba59b7ca11QRCODE.png\" alt=\"blahimage\" title=\"blahimage\" />";
GDataXMLElement *xmlElement = [[GDataXMLElement alloc]initWithXMLString:xmlString error:nil];
NSArray *attributes = [xmlElement attributes];
[attributes enumerateObjectsUsingBlock:^(GDataXMLNode * node, NSUInteger idx, BOOL *stop) {
NSLog(#"%# : %#",node.name,node.stringValue);
}];
OR
NSString *class = [[xmlElement attributeForName:#"class"] stringValue];
NSString *typeOf = [[xmlElement attributeForName:#"typeof"] stringValue];
NSString *src = [[xmlElement attributeForName:#"src"] stringValue];
NSString *alt = [[xmlElement attributeForName:#"alt"] stringValue];
NSString *title = [[xmlElement attributeForName:#"title"] stringValue];
Use json-framework or something similar.
If you do decide to use json-framework, here's how you would parse a JSON string into an NSDictionary:
SBJsonParser* parser = [[[SBJsonParser alloc] init] autorelease];
// assuming jsonString is your JSON string...
NSDictionary* myDict = [parser objectWithString:jsonString];
// now you can grab data out of the dictionary using objectForKey or another dictionary method
You have to convert json string in nsdictionary, so try this
SBJSON *json = [[SBJSON new] autorelease];
NSError *error;
NSDictionary *dict = [json objectWithString:YOUR_JSON_STRING error:&error];
add user this dictionary to display details in tableView
I am new to Objective-C and iOS development and am trying to write a method for generating a JSON string but when i NSLog this i get a bunch of hexcodes (i am guessing they are pointer adresses) can someone look at this method and tell me what i am doing wrong..
-(NSData *)generateInputJSON
{
NSError* error = nil;
NSString* region = [[NSLocale currentLocale]localeIdentifier];
NSString* language = [[NSLocale preferredLanguages]objectAtIndex:0];
NSMutableDictionary* properties = [NSMutableDictionary dictionaryWithObjectsAndKeys:
_sphereODNumber,#"sphereOD",
_sphereOSNumber,#"sphereOS",
_cylinderODNumber,#"cylinderOD",
_cylinderOSNumber,#"cylinderOS",
_visionCorrection,#"visionCorrection",
region,#"region",
language,#"language",
nil];
if([_visionCorrection isEqualToString:#"multiFocal"] ||
[_visionCorrection isEqualToString: #"progressive"])
{
[properties setValue:_addODNumber forKey:#"addOD"];
[properties setValue:_addOSNumber forKey:#"addOS"];
}
if([_visionCorrection isEqualToString: #"progressive"])
{
[properties setValue:_fittingHeightNumber forKeyPath:#"fittingHeight"];
}
NSData* inputJSON = [NSJSONSerialization dataWithJSONObject:properties options:NSJSONWritingPrettyPrinted error:&error];
return inputJSON;
}
my Log returns:
<7b0a2020 226c616e 67756167 6522203a 2022656e 222c0a20 20227669 73696f6e 436f7272 65637469 6f6e2220 3a202270 726f6772 65737369 7665222c 0a202022 6164644f 4422203a 20342e35 2c0a2020 22616464 4f532220 3a20342e 352c0a20 20227370 68657265 4f532220 3a20342e 352c0a20 20227265 67696f6e 22203a20 22656e5f 5553222c 0a202022 63796c69 6e646572 4f532220 3a20342e 352c0a20 20226669 7474696e 67486569 67687422 203a2031 372c0a20 20227370 68657265 4f442220 3a20342e 352c0a20 20226379 6c696e64 65724f44 22203a20 342e350a 7d>
What you're seeing is a description of the NSData object, which is just the the bytes in the data in hex. If you were to (say) write that data to a file and open the file with a text editor you'd actually see the string you want. Since you want to return a string from your function, you can convert the NSData to a string like so:
return [[NSString alloc] initWithData:inputJSON encoding:NSUTF8StringEncoding];
Remember to autorelease that if you're in non-ARC code. You should also change the return type of your method from NSData* to NSString* if you're going to return a string.
Convert the data into an NSString like so
NSString *string = [[NSString alloc]initWithData:inputJSON encoding:NSUTF8StringEncoding];
then just print it with NSLog
NSLog(#"%#", string);