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  

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

Changing name manually doesn't seem to work, throws gradle errors, well in my case it does throw error.

So I usually create a new flutter project.

I use below mentioned command to create a new flutter app

flutter create --org com.yourdomain appname

your project will have the package name as -> com.yourdomain.appname

if you just want to keep your package name as com.appname then make some changes as below

flutter create --org com appname

to add java instead of kotlin for android add -a java

flutter create -a java --org com.yourdomain appname

EDIT

If you have already created a project you can use change_app_package_name package to change the package name.

flutter pub run change_app_package_name:main com.package.appname

For those like me that doesn't like to change specific files, I've used https://pub.dev/packages/rename.

Using this, you simply run these commands in your terminal and your app name and identifiers will be changed.pub global run

Installing: pub global activate rename

And then, Run this command inside your flutter project root.

pub global run rename --bundleId com.example.android.app --target android