fluttermaskedtext

Masked text input for flutter.

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Install

Follow this GUIDE

Usage

Import the library

import 'package:flutter_masked_text/flutter_masked_text.dart';

MaskedText

Create your mask controller:

var controller = new MaskedTextController(mask: '000.000.000-00');

Set controller to your text field:

return new MaterialApp(
    title: 'Flutter Demo',
    theme: new ThemeData(
        primarySwatch: Colors.blue,
    ),
    home: new SafeArea(
        child: new Scaffold(
            body: new Column(
                children: [
                    new TextField(controller: controller,) // 
This is the result:



Mask Options

In mask, you can use the following characters:


  
0
: accept numbers
  
A
: accept letters
  
@
: accept numbers and letters
  
*
: accept any character


Initial Value

To start a mask with initial value, just use 
text
 property on constructor:
var controller = new MaskedTextController(mask: '000-000', text: '123456');

Update text programaticaly

If you want to set new text after controller initiatialization, use the 
updateText
 method:
var controller = new MaskedTextController(text: '', mask: '000-000');
controller.updateText('123456');

print(controller.text); //123-456

Using custom translators

If you want to use your custom regex to allow values, you can pass a custom translation dictionary:
const translator = {
    '#': new RegExp(r'my regex here')
};

var controller = new MaskedTextController(mask: '####', translator: translator);

If you want to use default translator but override some of then, just get base from 
getDefaultTranslator
 and override what you want (here is a sample for obfuscated credit card):
var translator = MaskedTextController.getDefaultTranslator(); // get new instance of default translator.
translator.remove('*'); // removing wildcard translator.

var controller = new MaskedTextController(mask: '0000 ** ** 0000', translator: translator);
controller.updateText('12345678');
print(controller.text); //1234 ** ** 5678

Change the mask in runtime

You can use the 
updateMask
 method to change the mask after the controller was created.
var cpfController = new MaskedTextController(text: '12345678901', mask: '000.000.000-00');

print(cpfController.text); //'123.456.789-01'
cpfController.updateMask('000.000.0000-0');
print(cpfController.text); //'123.456.7890-1'

Hook: beforeChange [v0.7.0+]

In some cases, you will want to validate the mask value to decide if it's allowed to input or not.

It's simple: you just need to set the 
beforeChange
 and return 
true
 or 
false
. If you return 
true
, it will accept the new value and will try to apply the mask. Otherwhise, it will reject the new value.

The function receives two parameters:


  
previous
: the previous text of the controller.
  
next
: the next text that will be masked.

var controller = new MaskedTextController(mask: '(00) 0000-0000');
controller.beforeChange = (String previous, String next) {
    // my logic here

return true;
};

Hook: afterChange [v0.7.0+]

This function will be called after setted in the controller.

The function receives two parameters:


  
previous
: the previous text of the controller.
  
next
: the next text that will be masked.

var controller = new MaskedTextController(mask: '(00) 0000-0000');
controller.afterChange = (String previous, String next) {
    print("$previous | $next");
};

Money Mask

To use money mask, create a MoneyMaskedTextController:
var controller = new MoneyMaskedTextController();

//....
new TextField(controller: controller, keyboardType: TextInputType.number)

Decimal and Thousand separator

It's possible to customize 
decimal
 and 
thousand
 separators:
var controller = new MoneyMaskedTextController(decimalSeparator: '.', thousandSeparator: ',');

Set value programaticaly

To set value programaticaly, use 
updateValue
:
controller.updateValue(1234.0);

Get double value

To get the number value from masked text, use the 
numberValue
 property:
double val = controller.numberValue;

Using decoration symbols

You can use currency symbols if you want:
// left symbol
var controller = new MoneyMaskedTextController(leftSymbol: 'R\$ ');
controller.updateValue(123.45);

print(controller.text); //
hook: afterChange [v0.7.0+]

You can watch for mask and value changes. To do this, just set the 
afterChange
 hook.

This function receives two parameters:



  
masked
: the masked text of the controller.
  
raw
: the double value of the text.

var controller = new MoneyMaskedTextController();

controller.afterChange = (String masked, double raw) {
    print("$masked | $raw");
};

Defining decimal places [v0.8.0+]

You can define the number of decimal places using the 
precision
 prop:
var controller = new MoneyMaskedTextController(precision: 3);
controller.updateValue(123.45);

print(controller.text); //
Using default TextEditingController

The MaskedTextController and MoneyMaskedTextController extends TextEditingController. You can use all default native methods from this class.

Samples

You can check some code samples in this repo: flutter-masked-text-samples

TODO



  [x] Custom translations
  [x] Money Mask
  [ ] Raw Text Widget