Скачать или смотреть How to Create a Flutter Bottom Sheet Without External Packages

Learn how to create a Flutter Bottom Sheet from scratch, without relying on any third-party packages. Enhance your Flutter app with custom bottom sheets using built-in Flutter functionalities.
---
How to Create a Flutter Bottom Sheet Without External Packages

Creating a bottom sheet in a Flutter application can be a powerful way to present additional options or information to users without navigating away from the current screen. In this post, we will guide you through the process of implementing a bottom sheet in Flutter without using any external packages.

What is a Bottom Sheet?

A bottom sheet is a sliding panel that originates from the bottom of the screen. Typically, it is used to display supplementary content or options related to the main screen. Flutter provides two types of bottom sheets:

Modal Bottom Sheet: A type of bottom sheet that temporarily locks the user out of the rest of the app until a decision is made.

Persistent Bottom Sheet: A type of bottom sheet that remains visible while the rest of the app is still interactive.

Creating a Modal Bottom Sheet

Here's a step-by-step guide to create a modal bottom sheet in Flutter:

Step 1: Set Up Your Project
Ensure you have Flutter installed and set up. Create a new project or open an existing one in your code editor.

Step 2: Implement the Modal Bottom Sheet

You can show a modal bottom sheet using the showModalBottomSheet function. Here's a simple implementation:

[[See Video to Reveal this Text or Code Snippet]]

Explanation

showModalBottomSheet: This function is used to display a modal bottom sheet.

context: Context in which the bottom sheet is displayed.

builder: A builder function that returns a widget to be displayed in the bottom sheet.

The above code demonstrates displaying a simple Container with text in the bottom sheet. You can customize it to include any widgets you need.

Creating a Persistent Bottom Sheet

For a persistent bottom sheet, use the showBottomSheet method:

[[See Video to Reveal this Text or Code Snippet]]

Explanation

showBottomSheet: This method is used to display a persistent bottom sheet.

ScaffoldMessenger.of(context): Used to obtain a scaffold that displays the bottom sheet.

Conclusion

By following these steps, you can easily implement both modal and persistent bottom sheets in Flutter without relying on any external packages. This approach leverages the built-in functionalities provided by Flutter, allowing for customizable and efficient user interfaces.

Whether you are looking to present actions, show options, or display additional information, bottom sheets can be a valuable addition to your Flutter applications.