How to change package name in flutter?

Is there any way to change Package Name of Flutter project?

I want to change package name and application name in flutter project.

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

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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>

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Old Answer:

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