Decimal format in textfield in ios

Question

I have text field with placeholder 00.00 . I want to enter number in that format. Please help

You want to enter or you want user to enter and validate in given format? — Anoop Vaidya, Feb 25 '13 at 09:55
possible duplicate of [Validate Numeric Input to UITextField as the User Enters Input](http://stackoverflow.com/questions/9344159/validate-numeric-input-to-uitextfield-as-the-user-enters-input) — trojanfoe, Feb 25 '13 at 10:09

score 0 · Answer 1 · answered Feb 25 '13 at 09:48

0

Make keyboard type numeric. And internally use below code to get double value

      NSString *value =textfield_name.text;
      double doubleValue = [value doubleValue];

answered Feb 25 '13 at 09:48

python

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score 0 · Answer 2 · edited May 23 '17 at 10:24

Try this way:

Make your class the delegate for yourTextField, and add the codes as used from here.

NSString *enteredValue=@"99.129";//get your value from textfield as yourField.text
double doubleValue=[enteredValue doubleValue];
NSString *formattedDoubleValue=[NSString stringWithFormat:@"%.2f",doubleValue];
NSLog(@"->%@",formattedDoubleValue);//now you can set back to the textfield as yourField.text=formattedDoubleValue

Alternatively, you can use NSNumberFormatter for this.

NSNumberFormatter *numFormatter=[NSNumberFormatter new];
[numFormatter setFormat:@"00.00"];
NSString *str=[numFormatter stringFromNumber:@99.129];
NSLog(@"->%@",str);

EDIT: As per your comment

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
    if (textField == self.yourTextField){
        NSLog(@"here");
        NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];

        NSString *expression = @"^([0-9]{1,2})(\\.([0-9]{1,2})?)?$";

        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:expression
                                                                               options:NSRegularExpressionCaseInsensitive
                                                                                 error:nil];
        NSUInteger numberOfMatches = [regex numberOfMatchesInString:newString
                                                            options:0
                                                              range:NSMakeRange(0, [newString length])];
        if (numberOfMatches==0){
            return NO;
        }
    }

    return YES;
}

when entering in text field itself it should validate.can help please — Deepak, Feb 25 '13 at 10:12

Decimal format in textfield in ios

2 Answers2