Flutter : Change Package Name and Bundle ID (iOS, Android, macOS, Linux) using rename package

Procedure for Renaming AppName and Package Name

Example (Current Attributes):

Project Name: projectname

Android: Package Name e.g. com.geekdish.projectname

iOS: Bundle ID e.g com.geekdish.projectname

Step 1: Activate the rename package

From Android Studio, open Terminal and execute the following

> flutter pub global activate rename
Resolving dependencies...
+ args 2.3.0
+ logger 1.1.0
+ rename 1.3.1
Downloading rename 1.3.1...
Downloading logger 1.1.0...
Building package executables...
Built rename:rename.
Installed executable rename.
Warning: Pub installs executables into $HOME/.pub-cache/bin, which is not on your path.
You can fix that by adding this to your shell's config file (.bashrc, .bash_profile, etc.): 

  export PATH="$PATH":"$HOME/.pub-cache/bin"

Activated rename 1.3.1. 

Documents/DEV/flutter took 7s 

Step 2: To change Package name and/or Bundle Id (e.g. com.geekdish.newprojectname):

            Rename package using rename tool

> flutter pub global run rename --bundleId com.geekdish.projectname

Step 3: Verify changes

For Android, in the Android Studio/<appname>/android/app/build.gradle

Check the application Id attribute under defaultConfig element, see below

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.geekdish.newflutterproject"
    minSdkVersion 16
    targetSdkVersion 30
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
}

For iOS, in Android Studio, right click <app name>/ios open in Xcode

Click Runner, you will see in the General>Identity>Bundle Identifier the new bundleId com.geekdish.projectname

For macOS, in the Android Studio/<appname>/maos/Runner/Configs/AppInfo.xcconfig

Check the PRODUCT_BUNDLE_IDENTIFIER attribute, see below

// Application-level settings for the Runner target.
//
// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
// future. If not, the values below would default to using the project name when this becomes a
// 'flutter create' template.

// The application's name. By default this is also the title of the Flutter window.
PRODUCT_NAME = newflutterproject

// The application's bundle identifier
PRODUCT_BUNDLE_IDENTIFIER = com.geekdish.newappname

Step 4: To change Application Name (e.g. newappname):

            Rename appName using rename tool

> flutter pub global run rename --appname newappname

Step 5: To verify changes:

For Android, in the Android Studio/<appname>/android/app/src/main/AndroidManifest.xml

Check the android:label= attribute under <manifest>/<application> element, see below

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.geekdish.newprojectname">
   <application
        android:label="newappname"
        android:icon="@mipmap/ic_launcher">
        <activity

For iOS, in the Android Studio/<appname>/ios/Runner/Info.plist

Check the <string> attribute under <dict>/<key>/<CFBundleName> element, see below

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
   <key>CFBundleDevelopmentRegion</key>
   <string>$(DEVELOPMENT_LANGUAGE)</string>
   <key>CFBundleExecutable</key>
   <string>$(EXECUTABLE_NAME)</string>
   <key>CFBundleIdentifier</key>
   <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
   <key>CFBundleInfoDictionaryVersion</key>
   <string>6.0</string>
   <key>CFBundleName</key>
   <string>newappname</string>

For macOS, in the Android Studio/<appname>/maos/Runner/Configs/AppInfo.xcconfig

Check the PRODUCT_NAME  attribute, see below

// Application-level settings for the Runner target.
//
// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
// future. If not, the values below would default to using the project name when this becomes a
// 'flutter create' template.

// The application's name. By default this is also the title of the Flutter window.
PRODUCT_NAME = newflutterproject