How to get the data of TextFormField as a double in flutter-CodePudding

I tried double.parse to get the data of TextFormField as a double:

double _pointsUsing = double.parse(pointsEdditingController.text);

but it causes error saying "The method '>=' was called on null". If I tried this:

double _pointsUsing = double.tryParse(pointsEdditingController.text);

it returns null.

The textformfield text value is: 1,133.00

It also says "Tried calling: <(1133.0) 1,133.00"

CodePudding user response：

you need to remove "," from the string then after parse to double.

double _pointsUsing = double.parse(pointsEdditingController.text.replaceAll(",",""));

CodePudding user response：

You can do this way :

print( double.tryParse('2,456.90'.replaceAll(",","")));

CodePudding user response：

Use keyboard type as number in text field it may help you

TextField(
            decoration: new InputDecoration(
            labelText: "Enter your number"),
            keyboardType: TextInputType.number,
);
    ```

Then parse your data like this:-

String textFieldData = pointsEdditingController.text.isEmpty ? "0" : pointsEdditingController.text;

double _pointsUsing = double.parse(textFieldData);