I am converting an NSNumber to an NSString assuming in this example that the selected key in "theindex" is 1000000
NSNumber *firstNumber = [tempDict objectForKey:#"theindex"];
NSString *convertNumber = [firstNumber stringValue];
Returning the NSString "1000000"
I would like the string's value to be "1,000,000".
I am not concerned with localization, but understand from other questions that NSNumberFormatter should be implemented. I am not sure how to accomplish this?
Here is an example using a standard formatting style of NSNumberFormatter:
NSNumber *firstNumber = [NSNumber numberWithInt:123456789];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSString *convertNumber = [formatter stringForObjectValue:firstNumber];
NSLog(#"value : %#", convertNumber);
Other examples you can reference at:
http://iosdevelopertips.com/cocoa/formatting-numbers-nsnumberformatter-examples.html
NSNumber *firstNumber = [[NSNumber alloc] initWithInt:1000000] ;
NSNumberFormatter *format=[[NSNumberFormatter alloc] init];
[format setGroupingSize:3];
[format setCurrencyGroupingSeparator:#","];
[format setNumberStyle:NSNumberFormatterDecimalStyle];
NSString *convertNumber = [format stringFromNumber:firstNumber];
Related
I have a string like "1.23,45", (Germany/French style or other style).
How can I remove the format to normal string or to nsnumber?
I only know convert from number to string.:(
thanks.
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
[formatter setCurrencySymbol:#""];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:#"en_US"];
[formatter setLocale:locale];
NSString *formattedOutput = [formatter stringFromNumber:[NSNumber numberWithFloat:[aPrice floatValue]]];
[locale release];
[formatter release];
NSLog(#"%#", formattedOutput];
Further converting formattedString to number
NSNumber myNumber = [formattedOutput intValue]; //replace intValue by floatValue to get decimal output
You can convert a NSString to a NSNumber using a NSNumberFormatter, but you have to tell it which locale that you are using for your strings (German, in this case):
// Create a number formatter that can convert from/to German currency:
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = NSNumberFormatterCurrencyStyle;
formatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:#"de_DE"];
[formatter setLenient:YES];
// Use the number formatter to create a NSNumber:
NSNumber *number = [formatter numberFromString:#"1.23,45"];
// Return the number formatter to the current user's locale:
formatter.locale = [NSLocale currentLocale];
// Finally, create a string from the NSNumber formatted in the user's locale:
NSString *formattedString = [formatter stringFromNumber:number];
NSNumber * myNumber = [NSNumber numberWithInt:[#"1.23,45" intValue]];
or
NSNumber * myNumber = [NSNumber numberWithFloat:[#"1.23,45" floatValue]];
Note: better to trim the comma (,) symbol from string
You can use the below methods
+ (NSNumber *)numberWithChar:(char)value;
+ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
+ (NSNumber *)numberWithShort:(short)value;
+ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
+ (NSNumber *)numberWithInt:(int)value;
+ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
+ (NSNumber *)numberWithLong:(long)value;
+ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
+ (NSNumber *)numberWithLongLong:(long long)value;
+ (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
+ (NSNumber *)numberWithFloat:(float)value;
+ (NSNumber *)numberWithDouble:(double)value;
+ (NSNumber *)numberWithBool:(BOOL)value;
+ (NSNumber *)numberWithInteger:(NSInteger)value NS_AVAILABLE(10_5, 2_0);
+ (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value NS_AVAILABLE(10_5, 2_0);
It sounds like you need to do two things:
1) break the string into an arrays of substrings based upon comma separation
NSString *startString = #"1.23,45";
NSArray *subStringArray= [colorStr componentsSeparatedByString:#","];
2) convert each substring to a number
NSNumberFormatter * formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSString *subString = [subStringArray objectAtIndex:0];
NSNumber *thisNumber = [formatter numberFromString:subString];
NSLog (#"thisNumber: %#", thisNumber);
I have a StopWatch in my app. The time is displayed on a label with format: mm:ss.SSS as an NSString. I need to convert it to NSNumber. I searched Google many times, but couldn't find the answer.
Thanks!
The following gives you the date/time as a number in seconds since the reference date.
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"mm:ss"];
NSDate *date = [formatter dateFromString:textField.text];
NSNumber *dateAsNumber = [NSNumber numberWithFloat:[date timeIntervalSince1970]];
try the code below :
NSNumberFormatter * f = [[NSNumberFormatter alloc] init];
[f setNumberStyle:NSNumberFormatterDecimalStyle];
NSNumber * myNumber = [f numberFromString:#"42"];
[f release];
but change #"42" with your label_name.text
This is the way you can convert an NSString into NSNumber.
NSString *timeFormat = #"Your Time";
NSNumber *time = [NSNumber numberWithInt:[timeFormat integerValue]];
Okay so I have a custom number pad that works and shows numbers as 0.00 in a label (numberField), now i need it to show $0.00.
NSString *digit = sender.currentTitle;
numberField.text = [numberField.text stringByAppendingString:digit];
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
[numberFormatter setGroupingSeparator:#""];
[numberFormatter setMaximumIntegerDigits:4];
[numberFormatter setMaximumFractionDigits:2];
[numberFormatter setMaximumFractionDigits:2];
numberField.text = [numberField.text stringByReplacingOccurrencesOfString:#"." withString:#""];
NSDecimalNumber *currency = [[NSDecimalNumber decimalNumberWithString:numberField.text] decimalNumberByDividingBy: [NSDecimalNumber decimalNumberWithString:#"100"]];
NSString *numberFieldFormat = [numberFormatter stringFromNumber:currency];
numberField.text = numberFieldFormat;
I tried a $%1.2f but it crashes because it does not recognize the $ sign as a number.
Can someone help me out here? Or have a better way of making a custom pad with $ sign?
**Edit
I'm considering making numberField a hidden label (alpha 0) and placing a copy (numberField2) directly on top and running it through stringWithFormat. It works but i thought there may be a cleaner way of doing it.
You don't want it to show $0.00. What if I'm in the UK? Wouldn't I then want it to show £0.00?
It looks like you're incorrectly using the NSNumberFormatter. Here's how you format a number for currency:
NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
[f setNumberStyle:NSNumberFormatterCurrencyStyle];
NSString *string = [f stringFromNumber:[NSNumber numberWithFloat:1234.56]];
[f release];
That will format things correctly, regardless of your locale. It'll use the correct currency sign, the correct thousands separator, and the correct decimal separator. Attempting to recreate this functionality yourself is a Bad Idea™.
Try this:
NSString *digit = sender.currentTitle;
numberField.text = [numberField.text stringByAppendingString:digit];
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
[numberFormatter setGrouping Separator:#""];
[numberFormatter setMaximumIntegerDigits:4];
[numberFormatter setMaximumFractionDigits:2];
[numberFormatter setMaximumFractionDigits:2];
numberField.text = [numberField.text stringByReplacingOccurrencesOfString:#"." withString:#""];
numberField.text = [numberField.text stringByReplacingOccurrencesOfString:#"$" withString:#""];
NSDecimalNumber *currency = [[NSDecimalNumber decimalNumberWithString:numberField.text] decimalNumberByDividingBy: [NSDecimalNumber decimalNumberWithString:#"100"]];
NSString *numberFieldFormat = [numberFormatter stringFromNumber:currency];
numberField.text = [NSString stringWithFormat:#"$%#", numberFieldFormat];
From my understanding you just want to append a $ to your string. You could do something like this..
....
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
[numberFormatter setGrouping Separator:#""];
[numberFormatter setMaximumIntegerDigits:4];
[numberFormatter setMaximumFractionDigits:2];
[numberFormatter setMaximumFractionDigits:2];
NSDecimalNumber *currency = [[NSDecimalNumber decimalNumberWithString:numberField.text] decimalNumberByDividingBy: [NSDecimalNumber decimalNumberWithString:#"100"]];
NSString *formatted = [[currency stringValue] stringByReplacingOccurrencesOfString:[currency stringValue] withString:[NSString stringWithFormat:#"$%#",[currency stringValue]]];
NSLog(#"%#", formatted); // Prints $0.00
Or Am I misunderstanding your question?
How can I convert NSNumber "1234567 " to "12,34,567"?
I have used the NSNumberFormatter for this,but couldn't get the desired result.
I am doing like this
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSString *formattedString = [formatter stringFromNumber:[NSNumber numberWithFloat:1234567]];
NSLog(#":%#",formattedString);
Output: 1,234,567
Desired Output: 12,34,567
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setPositiveFormat:#"##,##,###"];
NSString *formattedNumberString = [numberFormatter
stringFromNumber:[NSNumber numberWithFloat:1234567]];
NSLog(#"formattedNumberString: %#", formattedNumberString);
[numberFormatter release];
NSNumber *number = [NSNumber numberWithInteger:1234567];
NSNumberFormatter *formatter = [NSNumberFormatter new];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSLog(#"%#", [formatter stringFromNumber:number]);
[formatter release];
I have a NSString that has the following number 0.871 and I'm trying to convert this to display like so 87.1%
I tried to use NSNumberFormatter to get that result but I can't get it to display 3 digits. What's the best way to achieve this result? Thanks.
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterPercentStyle];
NSNumber *number = [formatter numberFromString:inputString];
[formatter release];
NSString * str = #"0.863";
NSString * newStr = [NSString stringWithFormat:#"%.1f%%", [str floatValue]*100];
If you're trying to convert a string to a number, then format the number:
NSDecimalNumber *number = [NSDecimalNumber decimalNumberWithString:inputString];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterPercentStyle];
NSString *formattedString = [formatter stringFromNumber:number];
[formatter release];
If you just want to turn "0.871" into the number 87.1:
NSDecimalNumber *number = [NSDecimalNumber decimalNumberWithString:inputString];
NSDecimalNumber *percentNumber = [number decimalNumberByMultiplyingByPowerOf10:2];
Just use setMinimumFractionDigits:
NSNumber *myNumber = [NSNumber numberWithFloat:0.871];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterPercentStyle];
[formatter setMinimumFractionDigits:1];
NSLog(#"%#", [formatter stringFromNumber:myNumber]); // 87.1%
this also ensures that percentages are formatted appropriately for the locale.