Decimal point in calculations as . or ,

Question

If I use decimal pad for input of numbers the decimal changes depending of country and region format.
May be as a point \".\" or as a comma \",\"
And I do not have contr

Answer 1

You shoudld use a NSNumberFormatter for this, as this can be set to handle different locales.

Create a formatter:

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setLocale:[NSLocale currentLocale]];

Use it:

NSNumber *number = [numberFormatter numberFromString: string]; //string is the textfield.text

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if the device's locale is set to a locale, where the decimal separator in a ,, the Number Keypad will use is and the formatter as-well. On those the grouping separator will be .

For the other locales it will be vice-versa.

NSNumberFormatter is very sophisticated, you should read its section in Data Formatter Guide, too. It also knows a lot of currency handling (displaying, not conversion), if your app does handle such.