I used react-native init MyApp to initialise a new React Native app. This created among others an Android project with the package com.myapp.

What's the best way to change this package name, for example to: com.mycompany.myapp?

I tried changing it in AndroidManifest.xml but it created other errors, so I'm assuming it's not the way.

Any idea?

Solution 1

I've renamed the project' subfolder from: "android/app/src/main/java/MY/APP/OLD_ID/" to: "android/app/src/main/java/MY/APP/NEW_ID/"

Then manually switched the old and new package ids:

In: android/app/src/main/java/MY/APP/NEW_ID/

package MY.APP.NEW_ID;

In android/app/src/main/java/MY/APP/NEW_ID/

package MY.APP.NEW_ID;

In android/app/src/main/AndroidManifest.xml:


And in android/app/build.gradle:

applicationId "MY.APP.NEW_ID"

In android/app/BUCK:


Gradle' cleaning in the end (in /android folder):

./gradlew clean

Solution 2

I use the react-native-rename* npm package. Install it via

npm install react-native-rename -g

Then, from the root of your React Native project, execute the following:

react-native-rename "MyApp" -b com.mycompany.myapp

Solution 3

To change the package name from com.myapp to: com.mycompany.myapp (for example),

  1. For iOS app of the react app, use xcode - under general.
  2. For the android app, open the build.gradle at module level. The one in the android/app folder. You will find
// ...
defaultConfig {
     applicationId com.myapp
     // ...
// ...

Change the com.myapp to whatever you need.

Hope this helps.

Solution 4

you can simply use react-native-rename npm package.

Install using

npm install react-native-rename -g

Then from the root of your React Native project execute the following

react-native-rename "MyApp" -b com.mycompany.myapp

react-native-rename on npm

but notice that, this lib remove your and before changing your package name, give a backup from this two file and, after changing package name just put it back to their place. this solution work for me

more info: react-native-rename

Solution 5

Goto Android studio

Right click your package (most probably com)-> Refractor -> Rename -> Enter new package name in the dialog -> Do Refractor

It will rename your package name everywhere.

Solution 6

REACT 0.64 | 2021 NO EXPO

Let original App name be: com.myApp Let New App Name: 'com.newname.myApp`

  1. android\app\src\main\AndroidManifest.xml

Rename xml attribute: `package="com.newname.myApp"

  1. android\app\src\main\java\com\[yourAppName]\

Rename first line from package com.myApp; To package com.newname.myApp;

  1. android\app\src\main\java\com\[yourAppName]\

Rename first line To package com.newname.myApp;

In class private static void initializeFlipper reneme this line:

Class<?> aClass = Class.forName("com.myApp.ReactNativeFlipper");


Class<?> aClass = Class.forName("com.newname.myApp.ReactNativeFlipper");

  1. android\app\build.gradle

On the defaultConfig rename applicationId

to "com.newname.myApp"

  1. Run on command line:

      $ npx react-native start
      $ npx react-native run-android

Solution 7

If you are using Android Studio-

changing com.myapp to com.mycompany.myapp

  1. create a new package hierarchy com.mycompany.myapp under android/app/src/main/java

  2. Copy all classes from com.myapp to com.mycompany.myapp using Android studio GUI

  3. Android studio will take care of putting suitable package name for all copied classes. This is useful if you have some custom modules and don't want to manually replace in all the .java files.

  4. Update android/app/src/main/AndroidManifest.xml and android/app/build.gradle (replace com.myapp to com.mycompany.myapp

  5. Sync the project (gradle build)

Solution 8

The init script generates a unique identifier for Android based on the name you gave it (e.g. com.acmeapp for AcmeApp).

You can see what name was generated by looking for the applicationId key in android/app/build.gradle.

If you need to change that unique identifier, do it now as described below:

In the /android folder, replace all occurrences of com.acmeapp by

Then change the directory structure with the following commands:

mkdir android/app/src/main/java/com/acme

mv android/app/src/main/java/com/acmeapp android/app/src/main/java/com/acme/app

You need a folder level for each dot in the app identifier.


Solution 9

In VS Code, press Ctrl + Shift + F and enter your old package name in 'Find' and enter your new package in 'Replace'. Then press 'Replace all occurrences'.

Definitely not the pragmatic way. But, it's done the trick for me.

Solution 10

I have a solution based on @Cherniv's answer (works on macOS for me). Two differences: I have a in the java folder that I do the same thing to, and I don't bother calling ./gradlew clean since it seems like the react-native packager does that automatically anyways.

Anyways, my solution does what Cherniv's does, except I made a bash shell script for it since I'm building multiple apps using one set of code and want to be able to easily change the package name whenever I run my npm scripts.

Here is the bash script I used. You'll need to modify the packageName you want to use, and add anything else you want to it... but here are the basics. You can create a .sh file, give permission, and then run it from the same folder you run react-native from:

rm -rf ./android/app/src/main/java

mkdir -p ./android/app/src/main/java/com/MyWebsite/MyAppName
    sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/
    sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/
    sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/
    sed -i '' -e "s/.*package=\".*/    package=\""$packageName"\"/" ./android/app/src/main/AndroidManifest.xml
    sed -i '' -e "s/.*package = '.*/  package = '"$packageName"',/" ./android/app/BUCK
    sed -i '' -e "s/.*applicationId.*/    applicationId \""$packageName"\"/" ./android/app/build.gradle

    cp -R ./android/app/src/main/javaFiles/ ./android/app/src/main/java/com/MyWebsite/MyAppName

DISCLAIMER: You'll need to edit's comment near the bottom of the java file first. It has the word 'package' in the comment. Because of how the script works, it takes any line with the word 'package' in it and replaces it. Because of this, this script may not be future proofed as there might be that same word used somewhere else.

Second Disclaimer: the first 3 sed commands edit the java files from a directory called javaFiles. I created this directory myself since I want to have one set of java files that are copied from there (as I might add new packages to it in the future). You will probably want to do the same thing. So copy all the files from the java folder (go through its subfolders to find the actual java files) and put them in a new folder called javaFiles.

Third Disclaimer: You'll need to edit the packageName variable to be in line with the paths at the top of the script and bottom (com.MyWebsite.MyAppName to com/MyWebsite/MyAppName)

Solution 11

If you are using VSCode and Windows.

1.Press Control + Shift + F.

2.Find Your Package Name and Replace All with your new Package Name.

  1. type "cd android"

  2. type "./gradlew clean"

Solution 12

To change the Package name you have to edit four files in your project :

 1. android/app/src/main/java/com/reactNativeSampleApp/
 2. android/app/src/main/java/com/reactNativeSampleApp/
 3. android/app/src/main/AndroidManifest.xml
 4. android/app/build.gradle

The first 2 files have the package name as something like below.


Change it to your desired package name.


You have to also edit the package name in 2 other files.



Note if you have a google-services.json file in your project then you have to also change your package name in that file.

After this, you have to ./gradlew clean your project.

Solution 13

Go to Android Studio, open app, right click on java and choose New and then Package.

Give the name you want (e.g. com.something).

Move the files from the other package (you want to rename) to the new Package. Delete the old package.

Go to your project in your editor and use the shortcut for searching in all the files (on mac is shift cmd F). Type in the name of your old package. Change all the references to the new package name.

Go to Android Studio, Build, Clean Project, Rebuild Project.


Happy coding :)

Solution 14

I fixed this by manually updating package name in following places

1) app.json               |  ./
2) index.js               |  ./
3) package.json           |  ./
4) settings.gradle        |  ./android/
5) BUCK                   |  ./android/app/
6) build.gradle           |  ./android/app/
7) AndroidManifest.xml    |  ./android/app/src/main/
8)      |  ./android/app/src/main/java/**
9)   |  ./android/app/src/main/java/**
10)strings.xml            |  ./android/app/src/main/res/values
11)|  ./android/app/src/debug/java/com/<package-name>/

Solution 15

After running this:

react-native-rename "MyApp" -b com.mycompany.myapp

Make sure to also goto Build.gradle under android/app/... and rename the application Id as shown below:

defaultConfig {

Solution 16

I will provide you step by step procedure.

First of all, we need to understand why we need to rename a package? Mostly for uniquely identifying App right? So React Native is a cross-platform to develop an app that runs on both iOS and Android. So What I recommended is to need the same identifier in both the platforms. In case Android Package Name is a unique identifier of your App and for iOS its bundle ID.


  1. Firstly close all editors/studio eg: xcode android studio vscode and then Install package "react-native-rename" in the terminal by running the command (Keep your project folder copy in another folder for backup if you don't feel this safe):

npm install react-native-rename -g

  1. After sucessfully installing package open your project folder in the terminal and hit the below command where "Your app name Within double quotes" is app name and <Your Package Name without double/single quotes> is replaced with package/bundle name/id:

react-native-rename "< Your app name Within double quotes >" -b <Your Package Name without double/single quotes>

Example: react-native-rename "Aptitude Test App" -b com.vaibhavmojidra.aptitudetestapp

Note Make sure the package/bundle name/id is all in small case

  1. This is not yet done yet now every file will change where the it had bundle/package names except one in ios project which we manually need to do for that open the xcode>open a project or file> choose file from projectfolder/ios/projectname.xcodeproj and click open

  2. Click on your projectname.xcodeproj that is first file in the project navigator then in field of Bundle identifier enter the package name/Bundle ID as below:

  1. After that run in the terminal

cd ios

  1. Then run

pod install

  1. Then run

cd ..

  1. Now you are done for all the changes for ios just last step is to open Android Studio>Open an Existing Project> select projectfolder/android folder > Click on open

  2. Let it load and complete all the process and then in the Build Menu click "Clean Project" and the in File Menu > Close Project

  3. Close All editors and Now You can try the commands to run project on ios and android it will run with renamed packaged just while start server add extra flag --reset-cache:

npm start --reset-cache

Enjoy it will work now

Solution 17

very simple way :

cd /your/project/dir

run this command :

grep -rl "" . | xargs sed -i 's/'

rename your folder


change to


Solution 18

After renaming package name everywhere, from android studio. File -> Invalidate caches/Restart may fix this type of errors

this worked for me

Solution 19

This information can be helpful for you so listen properly...

After updating package name and changing files, don't forget to change in 
package.json and app.json file at the root directory of your react native project

Otherwise you will get this error below

Invariant Violation: "Your new package name" has not been registered

Solution 20

Ivan Chernykh's answer is correct for react-native 0.67 and below For react-native 0.68 and above with the new architecture once you're down with the steps which Ivan Chernykh has mentioned

For android you have to go to app => src => main => ini folder

In MainApplicationTurboModuleManagerDelegate.h

change below line

static constexpr auto kJavaDescriptor =

In MainComponentsRegistry.h

 constexpr static auto kJavaDescriptor =

Solution 21

Go to file android/app/src/main/AndroidManifest.xml -

Update :

attr android:label of Element application as :

Old value - android:label="@string/app_name"

New Value - android:label="(string you want to put)"


attr android:label of Element activity as :

Old value - android:label="@string/app_name"

New Value - android:label="(string you want to put)"

Worked for me, hopefully it will help.