I need a text entry with +/- button on decimal keyboard like below image. Can anyone advise me how to achieve this.

I need a text entry with +/- button on decimal keyboard like below image. Can anyone advise me how to achieve this.

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A solution could be to add a
UIButtonover your keyboard and then link this button to yourUITextField. To access your keyboard view, you can do as follows :That's not a very clean solution though.
Edit : Here is an example given by iGW ( he adds a done button to his keyboard ) :
https://stackoverflow.com/a/25971206/3844377