https://github.com/fernandospr/android-navigation-abandon-fragment

Demonstrate a solution to call custom fragment logic when abandoning a fragment by pressing back or navigateUp.
https://github.com/fernandospr/android-navigation-abandon-fragment

Last synced: 5 days ago
JSON representation

Demonstrate a solution to call custom fragment logic when abandoning a fragment by pressing back or navigateUp.

• Host: GitHub
• URL: https://github.com/fernandospr/android-navigation-abandon-fragment
• Owner: fernandospr
• Created: 2020-03-09T11:35:17.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-03-09T11:52:47.000Z (almost 5 years ago)
• Last Synced: 2024-11-08T10:50:46.381Z (about 2 months ago)
• Language: Kotlin
• Homepage:
• Size: 122 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# android-navigation-abandon-fragment

This is a demo project to demonstrate a solution to call custom optional logic in your fragments when pressing back or navigateUp.

The demo contains three fragments:

* **AFragment**

* **BFragment**

* **CFragment**

**AFragment** and **CFragment** implement the `onAbandon()` method from the `AbandonListener` interface.

When pressing back or navigateUp, before going back, it'll call the `onAbandon()` method of the corresponding fragment, if the fragment implements the interface, otherwise it'll do nothing.

In this demo project, both fragments just print their class name.

### Adding a New Fragment

1. Create a new fragment.

2. Add the new fragment to the navigation graph file: **nav_graph.xml**.

3. Add an action to reach the new fragment in the navigation graph.

4. Implement the navigation in the **MainActivity.kt** file.

5. If you want to perform custom logic in your new fragment when the user presses back or navigateUp, just implement the `AbandonListener` interface.