Change Your Project App Icon :

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1. Open Your Android folder in android studio, right click on android -> click on Open Android module in Android Studio
   
2. Or else click on File -> Open -> go to your project android location -> click on Open (For Mac) and click on Ok(For Windows).
   
3. Now wait until your gradle build

4. Now click on app -> New -> select Image Assets

5. On pop-up will appear in that select you app icon image path in Foreground Layer

6. Resize icon as per your requirement.

7. Now click on Background Layer tab, and select background color as per your requirement.



8. Now select release in Res directory and click on Finish button.
   


9. After finish process, open your project and run it again.