Error "FirebaseAuthentication" plugin is not implemented on android about capacitor-firebase-authentication

[jofftiquez]

For future readers

I think I figured it out. I forgot to import the @robingenz/capacitor-firebase-authentication in src-capacitor/package.json. Will close this now. Thank you.

[robingenz]

This message usually appears when the installation instructions have not been followed correctly.
Please make sure you follow each step correctly.

If you have recently updated from Capacitor 2, make sure that the plugin is not registered in the MainActivity.java.

[jofftiquez]

Hi, @robingenz thanks for the reply. I will double-check everything. Yes, I am currently using Capacitor 3, I will check that as well. I'll give feedback the soonest.

[jofftiquez]

@robingenz after re-following the setup guide it's still not working. To give you a summary of what I have done.

Context: I updated manually from cap 2 to cap 3, seems to be no issue as I can build successfully.

1. Properly installed required packages

2. Add firebase to android setup

google-services.json

File present

root-level build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    
    repositories {
        jcenter()
+        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'com.google.gms:google-services:4.3.10'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

apply from: "variables.gradle"

allprojects {
    repositories {
        jcenter()
+        google()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

app-level app/gradle.build

apply plugin: 'com.android.application'
+ apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    defaultConfig {
        applicationId "org.axie.account.tracker"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

repositories {
    flatDir{
        dirs '../capacitor-cordova-android-plugins/src/main/libs', 'libs'
    }
}

dependencies {
    androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
    androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
+    implementation platform('com.google.firebase:firebase-bom:29.0.0')
+    implementation 'com.google.firebase:firebase-analytics'
+    implementation 'com.google.firebase:firebase-auth'
    implementation "androidx.appcompat:appcompat:$androidxAppCompatVersion"
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation project(':capacitor-android')
    implementation project(':capacitor-cordova-android-plugins')
    testImplementation "junit:junit:$junitVersion"
}

apply from: 'capacitor.build.gradle'
apply plugin: 'com.google.gms.google-services'

3. App's SHA-1 setup done, and Auth Stragegy enabled already

4. Implementation

src-capacitor/capacitor.config.json

{
  "appId": "org.axie.account.tracker",
  "appName": "Axie Dashboard",
  "bundledWebRuntime": false,
  "npmClient": "yarn",
  "webDir": "www",
  "plugins": {
    "SplashScreen": {
      "launchShowDuration": 0,
      "launchAutoHide": false,
      "backgroundColor": "#ffffff"
    },
    "PushNotifications": {
      "presentationOptions": [
        "badge",
        "sound",
        "alert"
      ]
    },
    "FirebaseAuthentication": {
      "skipNativeAuth": false,
      "providers": [
        "google.com"
      ]
    }
  }
}

SignInPage.vue

// simply
const result = await FirebaseAuthentication.signInWithGoogle();

[jofftiquez]

Sorry for closing, I verified it's still not working.

[mburger81]

@jofftiquez Hey, I have exactly the same issue, what do you mean in "src-capacitor/package.json"
What is this package.json? Do mean the normal package.json in the root? If yes the error you get should be a different

[jofftiquez]

No, not the package.json in the root. I meant the package.json in src-capacitory/package.json.