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A Flutter widget for creating customizable PIN or OTP input fields using pure Dart with no external dependencies. It provides a clean, intuitive interface for users to enter numeric codes, supporting various styling options and smooth user interactions like auto-focus between fields. Ideal for authentication flows requiring one-time passwords or secure code entry.
Use cases
One-time password (OTP) entry
Secure PIN input for login
Multi-digit verification forms
Payment code entry
Account recovery workflows
Biometric authentication prompts
Key features
Pure Dart implementation
No external dependencies
Customizable styling
Auto-focus between fields
Supports keyboard input
Responsive design across platforms
Suitable for
Authentication screens
Two-factor authentication
Secure form inputs
Cross-platform apps
Simple numeric input interfaces
Developers avoiding third-party libraries
Considerations
Limited to numeric input only
No built-in validation
Requires manual handling of submission logic
Not suitable for long text inputs
No support for special characters
Minimal built-in accessibility features
Original README
Original README snapshot from the linked source repository. Visit the repository for the latest content.
pin_input_text_field
中文
PinInputTextField is a TextField widget to help display different style pin. It supports all the platforms flutter supports.
Notes 🚨
please use 4.4.1 for flutter version is below 3.7.0
Feature 🌟
allow you customized the shape, any!
built-in 4 commonly used pin styles of shape
obscure support
solid support
enterColor support
cursor support
support all the textField properties theoretically
Flutter all platform support
Example 🦀
Thanks to the Flutter Web, you can enjoy the preview by website without any installation.
The callback will execute when user click done, sometimes is not working in Android.
decoration
BoxLooseDecoration
Decorate the pin, there are 3 inside styles, the default is BoxLooseDecoration
inputFormatters
WhitelistingTextInputFormatter.digitsOnly
Just like TextField's inputFormatter, the default is WhitelistingTextInputFormatter.digitsOnly
keyboardType
TextInputType.phone
Just like TextField's keyboardType, the default is TextInputType.phone
pinEditingController
PinEditingController
Controls the pin being edited. If null, this widget will create its own PinEditingController
autoFocus
false
Same as TextField's autoFocus, the default is false
focusNode
FocusNode
Same as TextField's focusNode
textInputAction
TextInputAction.done
Same as TextField's textInputAction, not working in digit mode
enabled
true
Same as TextField's enabled, the default is true
onChanged
(String pin){}
Same as TextField's onChanged
textCapitalization
TextCapitalization.words
Same as TextField's textCapitalization
cursor
Cursor.disabled()
The cursor of the pin, default is not enabled
FormField
Instead of using PinInputTextField, using PinInputTextFormField to control validate.
All built-in decorations reserve 8 logical pixels between the pin area and the
validation error text by default. Configure the spacing on the decoration:
BoxLooseDecoration(
errorTextSpacing: 16, // Defaults to 8 when omitted.
strokeColorBuilder: constFixedColorBuilder(Colors.black),
)
ObscureStyle
/// Determine whether replace [obscureText] with number.finalbool isTextObscure;
/// The display text when [isTextObscure] is true, emoji supportedfinalString obscureText;
Known Issue 🥶
The PinEditingController listener will execute more than once when programmatically set text, you can filter some duplicate values in your code.
The helper supports patch, minor, major, and an explicit version such as
4.5.3. It refreshes remote tags, refuses a latest tag that cannot be matched
to the current history, and handles a pubspec.yaml version that is newer than
the tagged history. A real patch release requires a clean master matching
origin/master; it writes the root pubspec.yaml and CHANGELOG.md, commits
and pushes them, pushes the next bare version tag, and creates the GitHub
Release with generated notes. It never changes example/pubspec.yaml.
release.yml creates a GitHub Release for either bare or v SemVer tags, and
publish.yml publishes bare SemVer tags to pub.dev through the pub.dev
environment. Configure pub.dev's GitHub Actions publishing for this repository
before the first automated publish.
License
Copyright 2019 Tino Guo.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.