19 December 2024 Leave a comment Tech-Help
When developing mobile applications, especially those that require user authentication, a common requirement is to toggle the visibility of a password field. This feature enhances user experience by allowing users to verify their input. In this article, we will explore a robust solution to achieve this functionality in Flutter using the TextFormField widget.
Implementing Password Visibility Toggle
To implement a show/hide password feature, we need to dynamically toggle the obscureText property of the TextFormField. Here’s a step-by-step guide:
Step 1: Initialize State
First, declare a boolean variable to track the visibility state of the password. This variable should be initialized in the initState() method of your StatefulWidget:
@override
void initState() {
_passwordVisible = false;
super.initState();
}
Step 2: Configure the TextFormField
In your build() method, set up the TextFormField widget. Use the obscureText property to control the visibility based on the state of _passwordVisible:
TextFormField(
keyboardType: TextInputType.text,
controller: _userPasswordController,
obscureText: !_passwordVisible,
decoration: InputDecoration(
labelText: 'Password',
hintText: 'Enter your password',
suffixIcon: IconButton(
icon: Icon(
_passwordVisible ? Icons.visibility : Icons.visibility_off,
color: Theme.of(context).primaryColorDark,
),
onPressed: () {
setState(() {
_passwordVisible = !_passwordVisible;
});
},
),
),
);
Step 3: Toggle Password Visibility
The suffixIcon property is used to add an icon button that toggles the password visibility. When the button is pressed, the state is updated, and the UI reflects the change.
Enhancing Your Testing Process with Repeato
For developers working with Flutter applications, ensuring that UI components like text fields function correctly is crucial. Automated testing can significantly streamline this process. Repeato, a no-code test automation tool, offers a robust solution for creating, running, and maintaining tests for mobile apps. With its AI-driven approach, Repeato allows you to quickly set up test cases for various UI elements, including password visibility toggles. This tool can expedite your testing workflow, ensuring your applications are both functional and user-friendly.
For more insights on testing mobile applications, you can explore our Flutter Test Automation Guide and Virtual Test Devices Documentation.
