Android Configuration

Setup Firebase

• For Firebase setup, you just need to change the android/app/google-services.json file.

• Create a new firebase account, register your application with your package name.

• Now download the google-services.json file and replace with current.

• Refer to Link

Open Android module in Android Studio

• Open Android Studio.

• Select Open an existing Android Studio Project.

• Open the android directory within your app.

• Wait until the project has been synced successfully. (This happens automatically once you open the project, but if it doesn’t, select Sync Project with Gradle Files from the File menu).

• Now, click on Run button.

Change Application Name

• You must want to change your application name. This is how you can do. Follow the below step.

• Open /android/app/src/main/AndroidManifest.xml and specify your application name.

• manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example">
      <uses-permission android:name="android.permission.INTERNET" />
      <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />                    
          <application
          android:name="io.flutter.app.FlutterApplication"
          android:label="YOUR_APPLICATION_NAME"
          android:icon="@mipmap/ic_launcher">
  <activity>

Change Application Icon

• See How to generate an application icon?

• Browse your image and click on Download icon. After successfully generated, replace all icons in respective folders:

• /mipmap-hdpi in /android/app/src/main/res/ folder

• /mipmap-mdpi in /android/app/src/main/res/ folder

• /mipmap-xhdpi in /android/app/src/main/res/ folderr

• /mipmap-xxhdpi in /android/app/src/main/res/ folder

• /mipmap-xxxhdpi in /android/app/src/main/res/ folder

Change Application ID

• Follow the below steps to change you Application ID.

• Open /android/app/build.gradle

• defaultConfig 
  {
      applicationId "YOUR_APPLICATION_ID"
      minSdkVersion 21
      targetSdkVersion 29
      versionCode 1
      versionName "1.0.0"
      testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
  }

• Generate Signed APK

• • Go to your project -> Tools -> Flutter -> Open for Editing in Android Studio as shown below

  • 
  • Open Project in New Window

  • Wait for while until project synchronization. After that Go to Build -> GenerateSigned Bundle/APK...

  • 
  • Select Android App Bundle or APK Option as per your need. (Android App Bundle is best solution) and click Next button.

  • 
  • Select Create new.. option to generate new Signed key (When you release your app First Time) and Fill all options. Refer this link
  • 
  • Click Next button and you will get following screen...

  • 
  • Select Build variants - release and Signature versions both V1 and V2 respectively as shown above screen shot and click Finish button.

  • Wait for a while until Gradle Build Running process complete.and finally you will get the Generate Signed APK : (APKs) generated successfully . from that click on Locate option to get Location of your Generate Signed APK Key.