React-native-firebase: 🔥Error: cannot find symbol new MainReactPackage()

[oviedo97fer]

Issue

I have problems with the installation of firebase Realtime DataBase
I followed the documentation step by step:
First I completely installed firebase App. Then I installed FBRDB. At the time of running the application, it fails.

Similar issues, but solution don't fix my problem:
2353
2069
2512

Note:
Before trying to install Firebase DB, I had to link Firebase V6 with RN0.61.2 otherwise it didn't work

android/build.gradle:

buildscript {
    ext {
        buildToolsVersion = "28.0.3"
        minSdkVersion = 19
        compileSdkVersion = 28
        targetSdkVersion = 28
    }
    repositories {
        google()
        mavenLocal()
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath("com.android.tools.build:gradle:3.4.2")
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        //RNFirebase
        classpath 'com.google.gms:google-services:4.2.0'
    }
}

allprojects {
    repositories {
        mavenLocal()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url("$rootDir/../node_modules/react-native/android")
        }
        maven {
            // Android JSC is installed from npm
            url("$rootDir/../node_modules/jsc-android/dist")
        }
        google()
        jcenter()
        maven { url 'https://jitpack.io' }
    }
}

subprojects { subproject ->
    afterEvaluate {
        if ((subproject.plugins.hasPlugin('android') || subproject.plugins.hasPlugin('android-library'))) {
            android {
                variantFilter { variant ->
                    def names = variant.flavors*.name
                    if (names.contains("reactNative51") || names.contains("reactNative55") || 
                        names.contains("reactNative56") || names.contains("reactNative57") || 
                        names.contains("reactNative57_5")) {
                        setIgnore(true)
                    }
                }
            }
        }
    }
}

android/app/build.gradle:

apply plugin: "com.android.application"
import com.android.build.OutputFile

project.ext.react = [
    entryFile: "index.js",
    enableHermes: false, 
]

apply from: "../../node_modules/react-native/react.gradle"
def enableSeparateBuildPerCPUArchitecture = false

def enableProguardInReleaseBuilds = false

def jscFlavor = 'org.webkit:android-jsc:+'

def enableHermes = project.ext.react.get("enableHermes", false);

android {
    compileSdkVersion rootProject.ext.compileSdkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        applicationId "com.metricsdoqchatapp"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        //react-native-navigation
        missingDimensionStrategy "RNN.reactNativeVersion", "reactNative60"
        //
        versionCode 1
        versionName "1.0"
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false 
            include "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
        }
    }
    signingConfigs {
        debug {
            storeFile file('debug.keystore')
            storePassword 'android'
            keyAlias 'androiddebugkey'
            keyPassword 'android'
        }
    }
    buildTypes {
        debug {
            signingConfig signingConfigs.debug
        }
        release {
            signingConfig signingConfigs.debug
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            def versionCodes = ["armeabi-v7a": 1, "x86": 2, "arm64-v8a": 3, "x86_64": 4]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }

        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.facebook.react:react-native:+"
    //react-native-navigation
    implementation project(':react-native-navigation')
    //react-native-svg
    implementation project(':react-native-svg')
    //firebase App
    implementation project(":@react-native-firebase_app")
    //firebase DB
    implementation project(":@react-native-firebase_database")

    if (enableHermes) {
        def hermesPath = "../../node_modules/hermes-engine/android/";
        debugImplementation files(hermesPath + "hermes-debug.aar")
        releaseImplementation files(hermesPath + "hermes-release.aar")
    } else {
        implementation jscFlavor
    }
}

task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

apply from: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesAppBuildGradle(project)

apply plugin: 'com.google.gms.google-services'

android/settings.gradle:

[...]
rootProject.name = 'metricsDoqChatApp'
apply from: file("../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesSettingsGradle(settings)
include ':app'
//React navigation  
include ':react-native-navigation'
project(':react-native-navigation').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-navigation/lib/android/app/')

//react-native-svg
include ':react-native-svg'
project(':react-native-svg').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-svg/android')
//RN Firebase App
include ':@react-native-firebase_app'
project(':@react-native-firebase_app').projectDir = new File(rootProject.projectDir, './../node_modules/@react-native-firebase/app/android')
//Firebase Data Base
include ':@react-native-firebase_database'
project(':@react-native-firebase_database').projectDir = new File(rootProject.projectDir, './../node_modules/@react-native-firebase/database/android')

MainApplication.java:

package com.metricsdoqchatapp;

import android.app.Application;
import android.content.Context;
import com.facebook.react.PackageList;
import com.facebook.react.ReactApplication;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.soloader.SoLoader;
import java.lang.reflect.InvocationTargetException;

import java.util.List;
import java.util.Arrays;

import com.reactnativenavigation.NavigationApplication;
import com.reactnativenavigation.react.NavigationReactNativeHost;
import com.reactnativenavigation.react.ReactGateway;
//react-native-svg
import com.horcrux.svg.SvgPackage;
//Firebase App
import io.invertase.firebase.app.ReactNativeFirebaseAppPackage;
//firebase DB
import io.invertase.firebase.database.ReactNativeFirebaseDatabasePackage;

public class MainApplication extends NavigationApplication {

  @Override
  protected ReactGateway createReactGateway() {
      ReactNativeHost host = new NavigationReactNativeHost(this, isDebug(), createAdditionalReactPackages()) {
          @Override
          protected String getJSMainModuleName() {
              return "index";
          }
      };
      return new ReactGateway(this, isDebug(), host);
  }

  @Override
  public boolean isDebug() {
      return BuildConfig.DEBUG;
  }

  protected List<ReactPackage> getPackages() {
      // Add additional packages you require here
      // No need to add RnnPackage and MainReactPackage
      return Arrays.<ReactPackage>asList(
          // eg. new VectorIconsPackage()
          new SvgPackage(),
          //firebase DB
          new MainReactPackage(),
          new ReactNativeFirebaseAppPackage(),
          new ReactNativeFirebaseDatabasePackage()
      );
  }

  @Override
  public List<ReactPackage> createAdditionalReactPackages() {
      return getPackages();
  }
}

---

Environment

Click To Expand

**`react-native info` output:**

 System:
    OS: Windows 10
    CPU: (4) x64 Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
    Memory: 2.83 GB / 11.90 GB
  Binaries:
    Node: 10.16.3 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.17.3 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
    npm: 6.11.3 - C:\Program Files\nodejs\npm.CMD
  SDKs:
    Android SDK:
      API Levels: 23, 25, 26, 27, 28, 29
      Build Tools: 27.0.3, 28.0.3, 29.0.2
      System Images: android-28 | Intel x86 Atom_64, android-28 | Google APIs Intel 
x86 Atom, android-28 | Google Play Intel x86 Atom
  IDEs:
    Android Studio: Version  3.5.0.0 AI-191.8026.42.35.5791312
  npmPackages:
    react: 16.9.0 => 16.9.0
    react-native: 0.61.2 => 0.61.2

- **Platform that you're experiencing the issue on**: - [ ] iOS - [x ] Android - [ ] **iOS** but have not tested behavior on Android - [ ] **Android** but have not tested behavior on iOS - [ ] Both - **`react-native-firebase` version you're using that has this issue:** - `` - **`Firebase` module(s) you're using that has the issue:** - ` "@react-native-firebase/app": "^6.0.2" "@react-native-firebase/database": "^6.0.2",`

---

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[mikehardy]

Don't show snippets, show the whole file - these things are subtle and we need to see the whole thing

I think you're missing this which causes autolinking ot fail https://github.com/invertase/react-native-firebase/blob/master/tests/android/app/build.gradle#L16

[oviedo97fer]

Don't show snippets, show the whole file - these things are subtle and we need to see the whole thing

I think you're missing this which causes autolinking ot fail https://github.com/invertase/react-native-firebase/blob/master/tests/android/app/build.gradle#L16

Sorry, I update the information.

[mikehardy]

That is confusing then - it appears auto-linking should work, but you've got manually linked items. Your build is specifically failing because you include MainReactPackage but that is not imported in the java file so the symbol doesn't exist. It shouldn't be necessary either. I would compare and contrast the setup of the tests project in general, linked above in my previous comment, or, following the getting started / new app steps on invertase.io react-native-firebase documentation there is a react-native init command line that uses the special template here to create a template project nicely integrated. Running that should generate something you can compare with to see where the differences are

[oviedo97fer]

Fixed adding
import com.facebook.react.shell.MainReactPackage;

Closed.

[sumitbicky]

Saved my ass!