Flutter input with decimal number

Question

I'm trying to parse input in Flutter and extract Double value there. I.e. user can only input decimal numbers.

To do this I'm using TextField:

TextField(
                    keyboardType: TextInputType.numberWithOptions(signed: false, decimal: true)
                    controller: _controller,
                  )

However on iOS device I have keyboard with numbers and comma(,), not dot (.). When user inputs comma I'm parsing string and having error like this:

Error: FormatException: Invalid double 5,

What is the best way to handle this? Some dirty solutions are:

use TextInputType.numberWithOptions(signed: true, decimal: true) - this gives keyboard with not only numbers and user input dot there.
maybe somehow replace commas with dots first

Sagun Raj Lage Sagun Raj Lage · Accepted Answer · 2019-03-26T11:17:38

The reason behind showing of the comma is because of the device's local region formats. Maybe this link can help you out.

Flutter input with decimal number

1 Answers