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https://github.com/bhrott/flutter-masked-text
A masked text for Flutter.
https://github.com/bhrott/flutter-masked-text
flutter mask maskedtextfield
Last synced: 3 months ago
JSON representation
A masked text for Flutter.
- Host: GitHub
- URL: https://github.com/bhrott/flutter-masked-text
- Owner: bhrott
- License: mit
- Created: 2018-05-21T07:46:05.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2022-11-06T12:39:48.000Z (about 2 years ago)
- Last Synced: 2024-07-30T09:09:45.614Z (6 months ago)
- Topics: flutter, mask, maskedtextfield
- Language: Dart
- Homepage: https://pub.dartlang.org/packages/flutter_masked_text
- Size: 321 KB
- Stars: 275
- Watchers: 9
- Forks: 123
- Open Issues: 45
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
- awesome-flutter - Masked Text - Masked text with custom and monetary formatting by [Ben-hur Santos Ott](https://github.com/benhurott). (Components / Text & Rich Content)
README
# flutter_masked_text
Masked text input for flutter.
## Alert
Hi guys!
Unfortunately, I'm not developing mobile anymore. This repo will not receive updates.
## Install
Follow this [GUIDE](https://pub.dartlang.org/packages/flutter_masked_text#-installing-tab-)
## Usage
Import the library
```dart
import 'package:flutter_masked_text/flutter_masked_text.dart';
```
## MaskedText
Create your mask controller:
```dart
var controller = new MaskedTextController(mask: '000.000.000-00');
```
Set controller to your text field:
```dart
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,) // <--- here
],
),
),
),
);
```
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:
```dart
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:
```dart
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:
```dart
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):
```dart
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.
```dart
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.
```dart
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.
```dart
var controller = new MaskedTextController(mask: '(00) 0000-0000');
controller.afterChange = (String previous, String next) {
print("$previous | $next");
};
```
## Money Mask
To use money mask, create a MoneyMaskedTextController:
```dart
var controller = new MoneyMaskedTextController();
//....
new TextField(controller: controller, keyboardType: TextInputType.number)
```
### Decimal and Thousand separator
It's possible to customize `decimal` and `thousand` separators:
```dart
var controller = new MoneyMaskedTextController(decimalSeparator: '.', thousandSeparator: ',');
```
### Set value programaticaly
To set value programaticaly, use `updateValue`:
```dart
controller.updateValue(1234.0);
```
### Get double value
To get the number value from masked text, use the `numberValue` property:
```dart
double val = controller.numberValue;
```
### Using decoration symbols
You can use currency symbols if you want:
```dart
// left symbol
var controller = new MoneyMaskedTextController(leftSymbol: 'R\$ ');
controller.updateValue(123.45);
print(controller.text); //<-- R$ 123,45
// right symbol
var controller = new MoneyMaskedTextController(rightSymbol: ' US\$');
controller.updateValue(99.99);
print(controller.text); //<-- 99,99 US$
// both
var controller = new MoneyMaskedTextController(leftSymbol: 'to pay:', rightSymbol: ' US\$');
controller.updateValue(123.45);
print(controller.text); //<-- to pay: 123,45 US$
```
### 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.
```dart
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:
```dart
var controller = new MoneyMaskedTextController(precision: 3);
controller.updateValue(123.45);
print(controller.text); //<-- 123,450
```
## 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](https://github.com/benhurott/flutter-masked-text-samples)
## TODO
- [x] Custom translations
- [x] Money Mask
- [ ] Raw Text Widget