Integrating firebase services

Create a new firebase project

In the project settings > General > Add App, register a new platform (android)

Download google-services.json file and put it under android->app in the Flutter project

//Add the following lines in the project level build.gradle (android > build.gradle)

buildscript {
  repositories {
    // Check that you have the following line (if not, add it):
    google()  // Google's Maven repository
  }
  dependencies {
    ...
    // Add this line
    classpath 'com.google.gms:google-services:4.3.3'
  }
}

allprojects {
  ...
  repositories {
    // Check that you have the following line (if not, add it):
    google()  // Google's Maven repository
    ...
  }
}

//Add the following lines in the app level build.gradle (android > app > build.gradle)

apply plugin: 'com.android.application'
// Add this line
apply plugin: 'com.google.gms.google-services'

dependencies {
  // add the Firebase SDK for Google Analytics
  implementation 'com.google.firebase:firebase-analytics:17.2.2'
  // add SDKs for any other desired Firebase products
  // https://firebase.google.com/docs/android/setup#available-libraries
}

Note : Make sure that your flutter project enable multi dex build options
Change the minSdkVersion to 21 and add multiDexEnabled true in the  (android > app > build.gradle)

defaultConfig {
    applicationId "com.JoyDash.LearnEnglish"    minSdkVersion 21    targetSdkVersion 28    versionCode flutterVersionCode.toInteger()    versionName flutterVersionName
    multiDexEnabled true}

Integrating firebase analytics

Download  flutter firebase_analytics plugin
https://pub.dev/packages/firebase_analytics#-readme-tab-

and run it. .that's all

Integrating firebase crashnalytics

Download flutter firebase_crashlytics plugin
https://pub.dev/packages/firebase_crashlytics#-readme-tab-

1. Add the Fabric repository to the [project]/android/build.gradle file.

repositories {
  google()
  jcenter()
  // Additional repository for fabric resources
  maven {
    url 'https://maven.fabric.io/public'
  }
}

2. Add the following classpaths to the [project]/android/build.gradle file.

dependencies {
  // Example existing classpath
  classpath 'com.android.tools.build:gradle:3.2.1'
  // Add the google services classpath
  classpath 'com.google.gms:google-services:4.3.0'
  // Add fabric classpath
  classpath 'io.fabric.tools:gradle:1.26.1'
}

2. Apply the following plugins in the [project]/android/app/build.gradle file.

// ADD THIS AT THE BOTTOM
apply plugin: 'io.fabric'
apply plugin: 'com.google.gms.google-services'