Refactoring of input_widget and validator, added ability to include padding below selector button #421
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…istener. Added user-passable selectorButtonBottomPadding. Corrected method types in PhoneNumberUtil.
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I cleaned up the logic dealing with validation of input_widget, addressing the following: #385
As part of cleaning up the logic, I fixed the return type of the phone number utils validator (isValidNumber). The native code returns a boolean, so it should never be null anyway.
I added the ability to add padding below the country selector. This allows a consumer to fix an issue where the flag--when not used as a prefix icon--would jump up when a phone number validation error message displayed and caused the TextField to grow in height. The flag would jump up because more padding is added when the input_widget is in the error state. The consumer can now add padding and follow the work-around listed here (flutter/flutter#15400 (comment)) to keep both the flag and the phone input field fixed when error messages are displayed.
Some updates to the gradle version in the example also.