Flutter App doesn't work when changing package name

Question

When I tried to change the package name in MainActivity.kt inside kotlin the app doesn't run

This error:

e: /Users/dma/development/flutter_share/android/app/src/main/kotlin/com/example/souqmubtath/MainActivity.kt: (8, 7): Redeclaration: MainActivity
e: /Users/dma/development/flutter_share/android/app/src/main/kotlin/dev/dhari/souqmubtath/MainActivity.kt: (8, 7): Redeclaration: MainActivity

FAILURE: Build failed with an exception.                                

* What went wrong:                                                      
Execution failed for task ':app:compileDebugKotlin'.                    
> Compilation error. See log for more details                           

* Try:                                                                  
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org                              

BUILD FAILED in 27s                                                     
Running Gradle task 'assembleDebug'...                                  
Running Gradle task 'assembleDebug'... Done                        27.6s
Gradle task assembleDebug failed with exit code 1

Answer 1

You haven't changed your package name correctly,

Just go to the following path

android > app > src >main > kotlin

Inside that you will find one more package like your_package_name containing MainActivity file.

In your case it is like, "com.example.souqmubtath "

So to change it properly, just go to your android manifest file, from there just find package="com.example.souqmubtath"

Just select com.example.souqmubtath and refactor it.

For refactor either select the package name -> right click on it -> Refactor -> Rename. OR Just select the package name and use refactor rename shortcut which is Shift+F6

You can rename it to your desired package name. In your case it is like "dev.dhari.souqmubtath"

Also, go to your android > app > build.gradle file path. Inside the file and defaultConfig{} find out applicationId and refactor it as well to the same name as your package name.