How to Change Package Name in Android Studio

Rename package in Android Studio

In Android Studio, you can do this:

For example, if you want to change com.example.app to my.awesome.game, then:

1. In your Project panel, click on the little gear icon ( )

2. Uncheck the Compact Empty Middle Packages option

   

3. Your package directory will now be broken down into individual directories

4. Individually select each directory you want to rename, and:

• Right-click on it

• Select Refactor

• Click on Rename

• In the pop-up dialog, click on Rename Package instead of Rename Directory

• Enter the new name and hit Refactor

• Click Do Refactor in the bottom

• Allow a minute to let Android Studio update all changes

• Note: When renaming com in Android Studio, it might give a warning. In such case, select Rename All

  

5. Now open your Gradle Build File (build.gradle - Usually app or mobile). Update the applicationId in the defaultConfig to your new Package Name and Sync Gradle, if it hasn't already been updated automatically:

   

6. You may need to change the package= attribute in your manifest.

7. Clean and Rebuild.

   

8. Done! Anyway, Android Studio needs to make this process a little simpler.

How to change package name in flutter?

For Android App Name

Change the label name in your AndroidManifest.xml file:

 <application
    android:name="io.flutter.app.FlutterApplication"
    android:label="TheNameOfYourApp"   

For Package Name

Change the package name in your AndroidManifest.xml (in 3 of them, folders: main, debug and profile, according what environment you want to deploy) file:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="your.package.name">

Also in your build.gradle file inside app folder

defaultConfig {
    applicationId "your.package.name"
    minSdkVersion 16
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}

Finally, change the package in your MainActivity.java class (if the MainActivity.java is not available, check the MainActivity.kt)

    package your.package.name;

    import android.os.Bundle;
    import io.flutter.app.FlutterActivity;
    import io.flutter.plugins.GeneratedPluginRegistrant;
    public class MainActivity extends FlutterActivity {

Change the directory name:

From:

  android\app\src\main\java\com\example\name

To:

  android\app\src\main\java\your\package\name
  

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EDITED : 27-Dec-18

for package name just change in build build.gradle only

defaultConfig {
    applicationId "your.package.name"
    minSdkVersion 16
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}

For iOS

Change the bundle identifier from your Info.plist file inside your ios/Runner directory.

<key>CFBundleIdentifier</key>
<string>com.your.packagename</string>

UPDATE

To avoid renaming the package and bundle identifier, you can start your project using this command in your terminal:

flutter create --org com.yourdomain appname

Fully change package name including company domain

You can do this:

Change the package name manually in the manifest file.
Click on your R.java class and the press F6 (Refactor->Move...). It will allow you to move the class to other package, and all references to that class will be updated.

reference: How do I rename the android package name?

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