How can I convert English numbers inside a string to Persian / Arabic numbers in Objective-C?
I have an English string that may or may not contain a number. But I want these numbers to be printed on the screen as Persian numbers.
For example, if NSString *foo = @"a string with numbers 1 2 3;"
then the output should be a string with numbers ۱۲۳
The code I'm using now is:
-(NSString *)convertEnNumberToFarsi:(NSString *) number{
NSString *text;
NSDecimalNumber *someNumber = [NSDecimalNumber decimalNumberWithString:number];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
NSLocale *gbLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"fa"];
[formatter setLocale:gbLocale];
text = [formatter stringFromNumber:someNumber];
return text;
}
This method only converts a string that is only in numbers, but as mentioned above, I want to convert any string that may or may not have a number in it.
How can I achieve this?
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Simple way:
NSDictionary *numbersDictionary = @{@"1" : @"۱", @"2" : @"۲", @"3" : @"۳", @"4" : @"۴", @"5" : @"۵", @"6" : @"۶", @"7" : @"۷", @"8" : @"۸", @"9" : @"۹"};
for (NSString *key in numbersDictionary) {
str = [str stringByReplacingOccurrencesOfString:key withString:numbersDictionary[key]];
}
Another solution is more flexible with locale:
NSNumberFormatter *formatter = [NSNumberFormatter new];
formatter.locale = [NSLocale localeWithLocaleIdentifier:@"ar"];
for (NSInteger i = 0; i < 10; i++) {
NSNumber *num = @(i);
str = [str stringByReplacingOccurrencesOfString:num.stringValue withString:[formatter stringFromNumber:num]];
}
Note: this code was written without an IDE, it may contain syntax errors.
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In swift 3:
func convertEngNumToPersianNum(num: String)->String{
let number = NSNumber(value: Int(num)!)
let format = NumberFormatter()
format.locale = Locale(identifier: "fa_IR")
let faNumber = format.string(from: number)
return faNumber!
}
Check before unloading force to prevent failure.
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Swift 3:
However, the other answers are correct, there is a small problem when converting String
to Int
.
Converting a String
to Int
removes left zeros which are not good (especially when converting cell phones and national IDs). To avoid this problem, I prefer to replace every English number with Persian.
static func convertToPersian(text : String)-> String {
let numbersDictionary : Dictionary = ["0" : "۰","1" : "۱", "2" : "۲", "3" : "۳", "4" : "۴", "5" : "۵", "6" : "۶", "7" : "۷", "8" : "۸", "9" : "۹"]
var str : String = text
for (key,value) in numbersDictionary {
str = str.replacingOccurrences(of: key, with: value)
}
return str
}
This technique can also be used to replace numbers in text, rather than having a pure number to convert to Persian.
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+(NSString *)convertNumToPersian:(NSString *)EnglishNumString
{
if ( [EnglishNumString isEqual:[NSNull null]] )
return @"";
NSString *myString = [EnglishNumString stringByReplacingOccurrencesOfString:@"1" withString:@"۱"];
myString = [myString stringByReplacingOccurrencesOfString:@"2" withString:@"۲"];
myString =[myString stringByReplacingOccurrencesOfString:@"3" withString:@"۳"];
myString =[myString stringByReplacingOccurrencesOfString:@"4" withString:@"۴"];
myString =[myString stringByReplacingOccurrencesOfString:@"5" withString:@"۵"];
myString =[myString stringByReplacingOccurrencesOfString:@"6" withString:@"۶"];
myString =[myString stringByReplacingOccurrencesOfString:@"7" withString:@"۷"];
myString =[myString stringByReplacingOccurrencesOfString:@"8" withString:@"۸"];
myString =[myString stringByReplacingOccurrencesOfString:@"9" withString:@"۹"];
myString =[myString stringByReplacingOccurrencesOfString:@"0" withString:@"۰"];
return myString;
}
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/ ** * In this function, convert an Arabic number to an English number. * @sample stringValue: pass a string value. * /
fun numberArabicToEnglish(stringValue: String): String {
val value = stringValue
.replace("١", "1")
.replace("٢", "2")
.replace("٣", "3")
.replace("٤", "4")
.replace("٥", "5")
.replace("٦", "6")
.replace("٧", "7")
.replace("٨", "8")
.replace("٩", "9")
.replace("٠", "0")
return value
}'enter code here'
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