How to change package name in Flutter app

Package name use to identify the application uniquely on devices and play store and app store.

Changing the package name need to be done in separately for android and iOS.

Change the package name in android app

First, go to the android folder > app > and open the build.gradle in the app folder. In there you have to change the applicationId inside the defaultConfig block.

    
       defaultConfig {
        applicationId "com.mightytechno.mightytechno"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    

Change bundle indentifier in iOS app

In iOS, it uses a bundle identifier to uniquely identify the apps. You can change it in the following way.

Open ios folder > runner and click and open Info.plist. Now change the value under the CFBundleIdentifier key.

    
       <key>CFBundleIdentifier</key>
  	   <string>com.mightytechno.mightytechno</string>
    

Now stop the running app and start the app again. Now you can see the app contains a new package name.

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