Moving a Bottom Sheet Along with the Keyboard in Flutter

Moving a Bottom Sheet Along with the Keyboard in Flutter

19 December 2024 Stephan Petzl Leave a comment Tech-Help

Flutter developers often encounter the challenge of ensuring that a bottom sheet with a text field doesn’t get overlapped by the keyboard. This article provides a comprehensive solution to this issue, utilizing the most effective practices in Flutter development. Let’s explore the method to seamlessly move the bottom sheet along with the keyboard.

Understanding the Problem

When you have a bottom sheet containing a text field with autofocus enabled, the keyboard appears automatically. However, without proper handling, the keyboard can overlap the bottom sheet, obscuring the text field. This can lead to a poor user experience, necessitating a solution that dynamically adjusts the bottom sheet’s position.

Solution Overview

The recommended approach involves using MediaQuery.of(context).viewInsets.bottom to adjust the padding of the bottom sheet. This technique ensures that the bottom sheet moves above the keyboard, maintaining visibility of the text field.

Step-by-Step Implementation

  1. Enable Scroll Control: Set isScrollControlled: true in the showModalBottomSheet function to allow the bottom sheet to resize and take the necessary height.
  2. Adjust Padding: Use the following code to adjust the bottom padding dynamically based on the keyboard’s position: 
    
showModalBottomSheet(
  context: context,
  isScrollControlled: true,
  builder: (context) => Padding(
    padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
    child: Column(
      mainAxisSize: MainAxisSize.min,
      children: [
        Text('Enter your address', style: TextStyle(fontSize: 16)),
        TextField(
          decoration: InputDecoration(hintText: 'Your Address'),
          autofocus: true,
        ),
      ],
    ),
  ),
);
  3. Handle Overflow: If you encounter a RenderFlex overflowed error, wrap your content in a SingleChildScrollView to ensure all elements are accessible.

Additional Considerations

It’s important to test the bottom sheet behavior across different devices and orientations to ensure a consistent user experience. The solution might require slight adjustments depending on the specific UI layout and design requirements.

Enhancing Your Testing with Repeato

When developing mobile applications, testing the user interface is crucial. Our product, Repeato, offers a no-code test automation tool that can significantly streamline your testing process. With its support for iOS and Android platforms, Repeato allows you to create, run, and maintain automated tests efficiently. Leveraging computer vision and AI, Repeato ensures that your app’s UI behaves as expected, even when the keyboard interacts with elements like bottom sheets.

For more detailed guidance on setting up and using Repeato, visit our documentation page.

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