How can I set a specific Region Format inside of my app and override the devices Region Format in an iOS app?

Question

I have a basic calculator app and it doesn't handle percentages properly in regions where a decimal point "." is used as the comma separator and a comma "," is used to mark the radix point. I am working on a fix for this but in the meantime I am wondering if when my app launches, I could override the Region Format set in the devices settings app and force a specific Region Format, only for my app.

Is this possible? Thank you for your time with this.

Answer 1

Instead of doing this, I suggest you look at NSNumberFormatter and NSNumber to do it the right away. For example, this should work regardless of the device's regional settings.

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSNumber *test = [formatter numberFromString:@"1,000,000"];

Also look at the other functionality provided by NSNumberFormatter. This seems like a more elegant way to do it than what you're trying.