Скачать или смотреть How to Add Menu Icons from Fragments to Host Activity Toolbar in Android

Discover how to seamlessly integrate menu icons from your fragments into the host activity’s toolbar using the Android Navigation Component.
---
This video is based on the question https://stackoverflow.com/q/71173273/ asked by the user 'Navin Kumar' ( https://stackoverflow.com/u/10579969/ ) and on the answer https://stackoverflow.com/a/71236347/ provided by the user 'Navin Kumar' ( https://stackoverflow.com/u/10579969/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Add menu icons from fragement into host actvity toolbar - Navigation component

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Add Menu Icons from Fragments to Host Activity Toolbar in Android

In modern Android development, creating a smooth user experience is crucial, especially when incorporating navigation components and dynamic toolbars. However, you may face challenges when trying to display specific icons in the host activity toolbar based on the fragment currently in view. If you're using a single activity navigation component structure, like many developers, you might be asking yourself: "How can I add menu icons (like a search icon or chat icon) from my fragments into the host activity’s toolbar?"

This guide will guide you through the process of adding these menu icons seamlessly, ensuring that your application maintains a consistent and functional interface.

Understanding the Structure

Before diving into the implementation, let's briefly understand the architecture of our application:

Single Activity Navigation Component Structure: Your application utilizes a single activity that manages multiple fragments.

Bottom Navigation and Drawer Layout: You have implemented a navigation drawer and a bottom navigation view, encapsulating fragments within these navigation components.

You have two primary fragments:

Fragment A (search icon)

Fragment B (chat icon)

Our goal is to ensure that when users are viewing Fragment A, they see the search icon in the toolbar, and similarly for Fragment B with its chat icon.

Step-by-Step Solution

Here’s how you can achieve this functionality from your fragments:

Step 1: Setup Host Activity with Toolbar

You’ll need to ensure your host activity is properly set up with a toolbar and navigation components. Below is a refined version of your setupViews() method which takes care of this setup:

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

This code snippet initializes the necessary views and establishes a connection with the toolbar for navigation.

Step 2: Configuring Fragments to Add Menu Icons

Each fragment that requires custom icons should override certain methods to specify the menu they want. Here’s an example for Fragment A where we will set the search icon:

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

Step 3: Observing Toolbar Behavior

With the above setup in place, your host activity’s toolbar will now automatically reflect changes based on the fragment being displayed.

If the user navigates to Fragment A, the search icon becomes available in the toolbar.

For Fragment B, follow similar steps, perhaps displaying the chat icon instead.

Conclusion

By properly configuring your fragments and the host activity, you can create a dynamic toolbar that adjusts to user interactions seamlessly. This approach not only enhances the user experience but also maintains the structural integrity of your application.

Remember, effective navigation and interaction design is crucial in app development, and toolbars play a vital role in achieving that. Happy coding!