I have weight values, they can be like 75kg and 75.5kg.
I want to have this values two styles: 75kg, 75.5kg, but NOT 75.0kg. How can I do it?
I have this solution, but I not like it
//show difference in 75 and 75.5 values style
NSString *floatWeight = [NSString stringWithFormat:#"%.1f",weightAtThePoint.floatValue];
NSString *intWeight = [NSString stringWithFormat:#"%.0f.0",weightAtThePoint.floatValue];
NSString *resultWeight;
if ([floatWeight isEqualToString:intWeight]) {
resultWeight = [NSString stringWithFormat:#"%.0f",weightAtThePoint.floatValue];
} else {
resultWeight = floatWeight;
}
The best solution would be using a number formatter:
static NSNumberFormatter * numberformatter = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
numberformatter = [[NSNumberFormatter alloc] init];
[numberformatter setNumberStyle:NSNumberFormatterDecimalStyle];
[numberformatter setMaximumFractionDigits:1];
[numberformatter setMinimumFractionDigits:0];
[numberformatter setLocale:[NSLocale currentLocale]];
});
Since the number formatter creation requires some resources is better if you create a single instance.
When you need to print a string just call this:
NSString * formattedString = [numberformatter stringFromNumber: weightAtThePoint];<br>
NSNumberFomatter prints only the decimal number if it is different from 0 and it also helps you in choosing the correct decimal separator by using the current locale on the device.
If you don't like your solution, then take look at my solution
float flotvalue = weightAtThePoint.floatValue;
int reminder = flotvalue / 1.0;
if (reminder==flotvalue) {
NSLog(#"%f",flotvalue); //75KG Solution
}
else {
//75.xx solution
}
Enjoy Coding
Related
I have number 36381129. I need number 36.381,129
I tried this code, but it doesn't work.
int number = 36381129;
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle: NSNumberFormatterCurrencyStyle];
NSString *numberAsString = [numberFormatter stringFromNumber: [NSNumber numberWithInt:number]];
I give this number.
36.381.129,00 $
I think this is BRAZILIAN REAL CURRENCY Format. You have to call this method with your price in float value, and this method returns your string into your format. Like if we pass 123456789, then it will return 123,456,789.00.
//Convert Price to Your Price Format
+(NSString*)convertFormat:(float)value{
NSString * convertedString = [NSString stringWithFormat:#"%.2f", value];
NSString * leftPart;
NSString * rightPart;
if (([convertedString rangeOfString:#"."].location != NSNotFound)) {
rightPart = [[convertedString componentsSeparatedByString:#"."] objectAtIndex:1];
leftPart = [[convertedString componentsSeparatedByString:#"."] objectAtIndex:0];
}
//NSLog(#"%d",[leftPart length]);
NSMutableString *mu = [NSMutableString stringWithString:leftPart];
if ([mu length] > 3) {
[mu insertString:#"." atIndex:[mu length] - 3];
//NSLog(#"String is %# and length is %d", mu, [mu length]);
}
for (int i=7; i<[mu length]; i=i+4) {
[mu insertString:#"." atIndex:[mu length] - i];
//NSLog(#"%d",mu.length);
}
convertedString = [[mu stringByAppendingString:#","] stringByAppendingString:rightPart];
return convertedString;
}
For more details, refer this blog.
Hope, this is what you're looking for. Any concern get back to me.
Welcome to SO. Your question is pretty vague.
Currency formats depend on the user's locale. It's generally better to either use the default locale of the device, or set a locale, and then let the currency formatter create that string that's appropriate for that locale.
If you set up a hard-coded currency format then it will be wrong for some users. (For example in the US we use a "." as a decimal separator and commas as a grouping symbol. In most of Europe they use a comma as a decimal separator and the period as a grouping symbol. Some countries put the currency symbol at the end of a currency amount, and others put it at the beginning.)
You can use this code:
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
NSString *groupingSeparator = [[NSLocale currentLocale] objectForKey:NSLocaleGroupingSeparator];
[formatter setGroupingSeparator:groupingSeparator];
[formatter setGroupingSize:3];
[formatter setAlwaysShowsDecimalSeparator:NO];
[formatter setUsesGroupingSeparator:YES];
and use it this way:
NSString *formattedString = [formatter stringFromNumber:[NSNumber numberWithFloat:rev];
This is a generic solution and will work for any country according to their grouping separator
Taken from: https://stackoverflow.com/a/5407103/2082569
Is there a field that returns the exact sale amount in salesforce?. Currently, i'm using the "Amount" from "Opportunity". I want to get the exact Amount (ex. 1,234.00) not the estimated amount.
Can't Find a field so i just formatted the result from Amount:
-(NSString *) convertAmount:(NSNumber *) number{
if ([number isKindOfClass:[NSNull class]]) {
number = 0;
}
unsigned long long value = [number longLongValue];
NSNumberFormatter *fmt = [[NSNumberFormatter alloc] init];
[fmt setNumberStyle:NSNumberFormatterDecimalStyle]; // to get commas (or locale equivalent)
NSString *result = [fmt stringFromNumber:#(value)];
result = [result stringByAppendingString:#".00"];
return result;
}
And to use it:
NSString * TestingVal = [self convertAmount:VALUE_FETCHED];
NSLog(#"Amount Value: %#", TestingVal);
I am having difficulties converting NSString's that have numbers into floats or something more useful.
I have tried the following code:
NSString *mystring = #"123"
int currentBidAmount = [myString integerValue];
No problem there.
Then float
NSString *mystring = #"123.95"
float currentBidAmount = [myString floatValue];
Again, no problem
However when myString has three decimals - I get an inaccurate number. For Example:
NSString *mystring = #"1.123.95"
float currentBidAmount = [myString floatValue];
It prints out: 1
Can someone tell me what I am doing wrong here?
The goal is to have two NSStrings - get their values and add them up for a total amount. So I need more accuracy than just I am getting now.
While you can get an NSString integer or floatValue you should use NSNumberFormatterfor that. Why? The decimal and grouping separator varies between countries and the floatValue code does only account for . as decimal separator. So users with a locale using a , are doomed.
How to:
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
float myFloat = [numberFormatter numberFromString:myString].floatValue;
Read up on various settings here: https://developer.apple.com/library/ios/documentation/cocoa/reference/foundation/classes/NSNumberFormatter_Class/Reference/Reference.html
you can't put two commas for a float value
this code works fins:
NSString *example = #"13124.4153";
float floatValue = [example floatValue];
NSLog(#"value = %f", floatValue);
Thanks for the help guys. I managed to solve the problem. The issue was the grouping separator. It separated by leaving a space. So this is why I had inaccurate numbers. Now, since I needed all my numbers to stay in this format but change when I was doing calculations (Adding sums together - I wrote a class method that looks like this:
(NSString *)getDisplayAmountStringWithValue: (NSString *)value Currency: (NSString *)currency
{
NSDecimalNumber *decimalValue = [NSDecimalNumber decimalNumberWithString:[value stringByReplacingOccurrencesOfString:#"," withString:#""]];
if ([decimalValue isEqualToNumber:[NSDecimalNumber notANumber]]){
decimalValue = [NSDecimalNumber decimalNumberWithString:#"0"];
}
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
[formatter setGroupingSeparator:#" "];
[formatter setDecimalSeparator:#"."];
[formatter setMaximumFractionDigits:2];
[formatter setMinimumFractionDigits:2];
if ([currency length] > 0){
[formatter setPositivePrefix:[NSString stringWithFormat:#"%#", currency]];
[formatter setNegativePrefix:[NSString stringWithFormat:#"%#-", currency]];
}else {
[formatter setGroupingSeparator:#""];
}
NSString *newNumberString = [formatter stringFromNumber:decimalValue];
return newNumberString;
}
Notice the if statement. I simply remove the space if I don't supply a currency (Which is not needed when adding sums together) - this along with my existing code, works perfectly.
Thanks for all the tips.
I have a UITextField that receives numeric input from the user in my application. The values from this textfield then get converted into currency format using NSNumberFormatter within my shouldChangeCharactersInRange delegate method. When I enter the number "12345678", the number gets correctly converted to $123456.78 (the numbers are entered one digit at a time, and up to this point, everything works smoothly). However, when I enter another digit after this (e.g. 9), rather than displaying "1234567.89", the number "1234567.88" is displayed. If I enter another number after that, a totally different numbers after this (I'm using the number key pad in the application to enter the numbers. Here is the code that I have:
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
modifiedValue = [formatter stringFromNumber:[NSNumber numberWithFloat:[modifiedValue floatValue]]];
textField.text = modifiedValue;
The line that causes this unusual conversion is this one:
modifiedValue = [formatter stringFromNumber:[NSNumber numberWithFloat:[modifiedValue floatValue]]];
Can anyone see why this is?
It's likely to be a rounding error when doing the string->float conversion. You shouldn't use floats when dealing with currency. You could use a NSDecimalNumber instead.
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
// Below 2 lines if converting from a "currency" string
NSNumber *modifiedNumber = [formatter numberFromString:modifiedValue]; // To convert from the currency string to a number object
NSDecimalNumber *decimal = [NSDecimalNumber decimalNumberWithDecimal:[modifiedNumber decimalValue]];
// OR the below line if converting from a non-currency string
NSDecimalNumber *decimal = [NSDecimalNumber decimalNumberWithString:modifiedValue];
modifiedValue = [formatter stringFromNumber:decimal]; // Convert the new decimal back to a currency string
You may also consider making the number formatter lenient - often helps with user entered data.
[formatter setLenient:YES];
When I'm running number conversions to currency, I usually run this code:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSString *text = _textField.text;
NSString *decimalSeperator = #".";
NSCharacterSet *charSet = nil;
NSString *numberChars = #"0123456789";
// the number formatter will only be instantiated once ...
static NSNumberFormatter *numberFormatter;
if (!numberFormatter)
{
[numberFormatter setLocale:[NSLocale currentLocale]];
numberFormatter = [[NSNumberFormatter alloc] init];
numberFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
numberFormatter.maximumFractionDigits = 10;
numberFormatter.minimumFractionDigits = 0;
numberFormatter.decimalSeparator = decimalSeperator;
numberFormatter.usesGroupingSeparator = NO;
}
// create a character set of valid chars (numbers and optionally a decimal sign) ...
NSRange decimalRange = [text rangeOfString:decimalSeperator];
BOOL isDecimalNumber = (decimalRange.location != NSNotFound);
if (isDecimalNumber)
{
charSet = [NSCharacterSet characterSetWithCharactersInString:numberChars];
}
else
{
numberChars = [numberChars stringByAppendingString:decimalSeperator];
charSet = [NSCharacterSet characterSetWithCharactersInString:numberChars];
}
// remove amy characters from the string that are not a number or decimal sign ...
NSCharacterSet *invertedCharSet = [charSet invertedSet];
NSString *trimmedString = [string stringByTrimmingCharactersInSet:invertedCharSet];
text = [text stringByReplacingCharactersInRange:range withString:trimmedString];
// whenever a decimalSeperator is entered, we'll just update the textField.
// whenever other chars are entered, we'll calculate the new number and update the textField accordingly.
if ([string isEqualToString:decimalSeperator] == YES)
{
textField.text = text;
}
else
{
NSNumber *number = [numberFormatter numberFromString:text];
if (number == nil)
{
number = [NSNumber numberWithInt:0];
}
textField.text = isDecimalNumber ? text : [numberFormatter stringFromNumber:number];
}
return NO; // we return NO because we have manually edited the textField contents.
}
The link explaining this is Re-Apply currency formatting to a UITextField on a change event
Hope this works!
I am trying to find a solution to add zeros in the beginning of the number as per the total input provided.
Example:
Number = 100
Total Number of digits = 3
The kind of format i will like to have is 001,002,003 and so on.
Thanks
I found out the solution for the same. Posting it below:
while (totalNumCopy) {
totalNumCopy = totalNumCopy/10;
noOfDigits++;
}
NSMutableString *thumbName = nil;
if(noOfDigits > 0)
{
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setFormatWidth:noOfDigits];
[formatter setPaddingCharacter:#"0"];
[formatter setNumberStyle: NSNumberFormatterPadBeforePrefix];
NSString *stringNumber = [formatter stringFromNumber:[NSNumber numberWithInt:i+1]];
thumbName = [NSString stringWithFormat:#"PageThumb%#.png",stringNumber];
[formatter release];
}
the basic string formatter is like this:
NSLog(#"%03d, %03d, %03d", 1, 2, 3);
the result would be:
001, 002, 003
maybe it helps on you.
NSString *myNumber = [NSString stringWithFormat:#"%03d", number];
i think the above code will help you