Text field decimal entry format

Question

I want to show float digits in textfield upto two decimal points as entered in an ATM machine to withraw amount. like, 0.03. if i enter a new digit say 6, it would be like, 0.36 and so on. Please suggest me the way to do so. Thanks

Paras Joshi · Answer 1 · 2012-11-29T09:07:51.930

2

hey check this like a ATM Functionality...

    NSString *str = @"1234987";
    NSUInteger len = str.length;
    if (len>0) {
        if (len==1) {
            str = [NSString stringWithFormat:@"0.0%@",str];
            NSLog(@"%@",str);
        }
        else if (len==2) {

            str = [NSString stringWithFormat:@"0.%@",str];
            NSLog(@"%@",str);
        }
        else {
            NSString  *pointstr = [str substringWithRange:NSMakeRange(len - 2,2)];
            NSString *Bstr = [str substringWithRange:NSMakeRange(0,len-2)];
            str = [NSString stringWithFormat:@"%@.%@",Bstr,pointstr];
            NSLog(@"\n\n FullString %@",str);
        }
    }
    else{
          str = @"0.0";
    }

OutPut is : FullString 12349.87

Enjoy with this code..

edited Nov 29 '12 at 09:07

answered Nov 29 '12 at 08:48

Paras Joshi

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Thanks for your code, but i have to enter numbers in textfield and display as well. What would be the alternative for that? – Mohit Manhas Nov 29 '12 at 09:12
ok i'll develop the code for your requirement if i got it then i'll post the code – Paras Joshi Nov 29 '12 at 09:20
Thanks paras for such an effort. – Mohit Manhas Nov 29 '12 at 09:22

score 1 · Answer 2 · answered Nov 29 '12 at 08:20

1

     NSNumberFormatter* decimalFormatter = [[NSNumberFormatter alloc] init];
        [decimalFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
        [decimalFormatter setMaximumFractionDigits:2];
        [decimalFormatter setMinimumFractionDigits:2];
NSString *enteredPrice=[decimalFormatter stringFromNumber:[NSNumber numberWithDouble:unitprice]];

You can use decimal formatter

answered Nov 29 '12 at 08:20

Pandey_Laxman

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Where do i use this, i mean which delegate method of UITextfield i can use. As i have to display the entered numbers in a textfield. – Mohit Manhas Nov 29 '12 at 08:35
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string; – Pandey_Laxman Nov 29 '12 at 08:45
can you please make a code for me having the above method that can input characters in 0.00 format from rightmost position? – Mohit Manhas Nov 29 '12 at 09:24

score 0 · Answer 3 · answered Nov 29 '12 at 08:19

0

Here you go:

float yourFloat = 2.45678;
NSString *text = [NSString stringWithFormat:@"%.2f", yourFloat];
textField.text = text;

answered Nov 29 '12 at 08:19

pbibergal

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Thanks for your help but is not what i am looking for. – Mohit Manhas Nov 29 '12 at 08:35

Stunner · Answer 4 · 2016-01-13T18:11:12.117

~~I have open sourced SATextField which has this functionality built-in. You'll want to set fixedDecimalPoint to YES.~~

EDIT: I have created a new project that contains this functionality: STAControls (specifically, use STAATMTextField -- it even supports . entry!). The difference is that this project has been implemented as a legitimate subclass of UITextField whereas SATextField was merely a container class housing a UITextField instance.

Text field decimal entry format

4 Answers4