Need standard proguard-rules.pro for Firebase Notification installation

[datnhemployee]

Scenario
I have followed the documentation of react-native-firebase at the link https://rnfirebase.io/docs/v5.x.x/installation/android to install the react-native-firebase. The notification does not work when I build the release apk. However, it does work fine in debug mode.
I believe it is the proguard obfuscation which does not keep the relevant modules to make Firebase Notification work right way.

Asking for help
Would anyone mind giving me the proguard-rules.pro file which did work with FCM (Firebase Cloud Messaging), please ? Thanks for advance.

app/android/build.gradle

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

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

apply from: "../../node_modules/react-native/react.gradle"

def enableSeparateBuildPerCPUArchitecture = false

def enableProguardInReleaseBuilds = true

android {
    compileSdkVersion rootProject.ext.compileSdkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        applicationId "com.testapp"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
        missingDimensionStrategy 'react-native-camera', 'general'
        vectorDrawables.useSupportLibrary = true
        multiDexEnabled true
    }
    signingConfigs {
        release {
            if (project.hasProperty('MYAPP_UPLOAD_STORE_FILE')) {
                storeFile file(MYAPP_UPLOAD_STORE_FILE)
                storePassword MYAPP_UPLOAD_STORE_PASSWORD
                keyAlias MYAPP_UPLOAD_KEY_ALIAS
                keyPassword MYAPP_UPLOAD_KEY_PASSWORD
            }
        }
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "arm64-v8a"
        }
    }
    buildTypes {
        release {
            minifyEnabled enableProguardInReleaseBuilds
            useProguard enableProguardInReleaseBuilds
            shrinkResources enableProguardInReleaseBuilds
            zipAlignEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
            signingConfig signingConfigs.release
        }
    }
    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
            def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a": 3, "x86_64": 4]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }
        }
    }
}

dependencies {
    implementation project(':react-native-keychain')
    implementation project(':@mapbox_react-native-mapbox-gl')
    implementation project(':react-native-image-crop-picker')
    implementation 'com.facebook.fresco:fresco:1.13.0'
    implementation 'com.facebook.fresco:animated-gif:1.13.0'
    implementation project(':@react-native-community_netinfo')
    implementation project(':react-native-svg')
    implementation project(':react-native-device-info')
    implementation project(':react-native-spring-scrollview')
    implementation project(':react-native-camera')
    implementation project(':@react-native-community_async-storage')
    implementation project(':react-native-vector-icons')
    implementation project(':react-native-sound')
    implementation project(':react-native-fast-image')
    implementation project(':react-native-gesture-handler')
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
    implementation "com.facebook.react:react-native:+"  // From node_modules
    implementation "com.github.bumptech.glide:okhttp3-integration:1.5.0@aar"
     // Firebase dependencies
    implementation project(':react-native-firebase')
    implementation('com.crashlytics.sdk.android:crashlytics:2.9.4@aar') {
        transitive = true
    }
    implementation "com.google.android.gms:play-services-base:16.1.0"
    implementation "com.google.firebase:firebase-core:16.0.9"
    implementation "com.google.firebase:firebase-messaging:18.0.0"
    implementation 'me.leolin:ShortcutBadger:1.1.21@aar'

}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

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

app/build.gradle

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

buildscript {
    ext {
        buildToolsVersion = "28.0.3"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 28
        supportLibVersion = "28.0.0"
    }
    repositories {
        google()
        jcenter()
        maven {
            url 'https://maven.fabric.io/public'
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
        classpath 'com.google.gms:google-services:4.2.0'
        classpath 'io.fabric.tools:gradle:1.28.1'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    configurations.matching { it.name == '_internal_aapt2_binary' }.all { config ->
        config.resolutionStrategy.eachDependency { details ->
            details.useVersion("3.5.0-alpha03-5252756")
        }
    }
    repositories {
        mavenLocal()
        google()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
        maven { url "https://jitpack.io" }
        maven { url "https://maven.google.com" }
    }
}

setting.gradle

rootProject.name = 'testapp'
include ':react-native-keychain'
project(':react-native-keychain').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-keychain/android')
include ':@mapbox_react-native-mapbox-gl'
project(':@mapbox_react-native-mapbox-gl').projectDir = new File(rootProject.projectDir, '../node_modules/@mapbox/react-native-mapbox-gl/android/rctmgl')
include ':react-native-image-crop-picker'
project(':react-native-image-crop-picker').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-image-crop-picker/android')
include ':react-native-firebase'
project(':react-native-firebase').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-firebase/android')
include ':@react-native-community_netinfo'
project(':@react-native-community_netinfo').projectDir = new File(rootProject.projectDir, '../node_modules/@react-native-community/netinfo/android')
include ':react-native-svg'
project(':react-native-svg').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-svg/android')
include ':react-native-device-info'
project(':react-native-device-info').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-device-info/android')
include ':react-native-spring-scrollview'
project(':react-native-spring-scrollview').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-spring-scrollview/android')
include ':react-native-camera'
project(':react-native-camera').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-camera/android')
include ':@react-native-community_async-storage'
project(':@react-native-community_async-storage').projectDir = new File(rootProject.projectDir, '../node_modules/@react-native-community/async-storage/android')
include ':react-native-vector-icons'
project(':react-native-vector-icons').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-vector-icons/android')
include ':react-native-sound'
project(':react-native-sound').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-sound/android')
include ':react-native-fast-image'
project(':react-native-fast-image').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-fast-image/android')
include ':react-native-gesture-handler'
project(':react-native-gesture-handler').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gesture-handler/android')
include ':app'

MainApplication.java

package com.testapp;

import android.app.Application;

import com.facebook.react.ReactApplication;
import com.oblador.keychain.KeychainPackage;
import com.mapbox.rctmgl.RCTMGLPackage;
import com.reactnative.ivpusic.imagepicker.PickerPackage;
import io.invertase.firebase.RNFirebasePackage;
import io.invertase.firebase.messaging.RNFirebaseMessagingPackage;
import io.invertase.firebase.analytics.RNFirebaseAnalyticsPackage;
import io.invertase.firebase.fabric.crashlytics.RNFirebaseCrashlyticsPackage;
import io.invertase.firebase.notifications.RNFirebaseNotificationsPackage;
import com.reactnativecommunity.netinfo.NetInfoPackage;
import com.horcrux.svg.SvgPackage;
import com.learnium.RNDeviceInfo.RNDeviceInfo;
import com.bolan9999.SpringScrollViewPackage;
import org.reactnative.camera.RNCameraPackage;
import com.reactnativecommunity.asyncstorage.AsyncStoragePackage;
import com.oblador.vectoricons.VectorIconsPackage;
import com.zmxv.RNSound.RNSoundPackage;
import com.dylanvann.fastimage.FastImageViewPackage;

import com.swmansion.gesturehandler.react.RNGestureHandlerPackage;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;

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

public class MainApplication extends Application implements ReactApplication {

  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    public boolean getUseDeveloperSupport() {
      return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(new MainReactPackage(), new KeychainPackage(), new RCTMGLPackage(),
          new PickerPackage(), new RNFirebasePackage(), new RNFirebaseMessagingPackage(),
          new RNFirebaseNotificationsPackage(), new RNFirebaseAnalyticsPackage(), new RNFirebaseCrashlyticsPackage(),
          new NetInfoPackage(), new SvgPackage(), new RNDeviceInfo(), new SpringScrollViewPackage(),
          new RNCameraPackage(), new AsyncStoragePackage(), new VectorIconsPackage(), new RNSoundPackage(),
          new FastImageViewPackage(), new RNGestureHandlerPackage());
    }

    @Override
    protected String getJSMainModuleName() {
      return "index";
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
  }

  @Override
  public void onCreate() {
    super.onCreate();
    SoLoader.init(this, /* native exopackage */ false);
  }
}

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.testapp">

  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="android.permission.VIBRATE" />
  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name="android.permission.RECORD_AUDIO" />
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
  <uses-feature android:name="android.hardware.camera" android:required="false" />
  <uses-feature android:name="android.hardware.camera.front" android:required="false" />
  <application android:name=".MainApplication" android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:roundIcon="@mipmap/ic_launcher_round" android:allowBackup="false" android:theme="@style/AppTheme" android:usesCleartextTraffic="true">
    <meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/ic_notification" />
    <meta-data android:name="com.google.firebase.messaging.default_notification_color" android:resource="@color/primary_green" />
    <meta-data android:name="com.google.firebase.messaging.default_notification_channel_id" android:value="@string/default_notification_channel_id" />
    <meta-data android:name="com.bumptech.glide.integration.okhttp3.OkHttpGlideModule" android:value="GlideModule" />
    <service android:name="io.invertase.firebase.messaging.RNFirebaseMessagingService">
      <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
      </intent-filter>
    </service>
    <service android:name="io.invertase.firebase.messaging.RNFirebaseBackgroundMessagingService" />
    <activity android:name=".MainActivity" android:label="@string/app_name" android:configChanges="keyboard|keyboardHidden|orientation|screenSize" android:screenOrientation="portrait" android:windowSoftInputMode="adjustPan">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
    <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
  </application>

</manifest>

proguard-rules.pro

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}

# React Native

# Keep our interfaces so they can be used by other ProGuard rules.
# See http://sourceforge.net/p/proguard/bugs/466/
-keep,allowobfuscation @interface com.facebook.proguard.annotations.DoNotStrip
-keep,allowobfuscation @interface com.facebook.proguard.annotations.KeepGettersAndSetters
-keep,allowobfuscation @interface com.facebook.common.internal.DoNotStrip

# Do not strip any method/class that is annotated with @DoNotStrip
-keep @com.facebook.proguard.annotations.DoNotStrip class *
-keep @com.facebook.common.internal.DoNotStrip class *
-keepclassmembers class * {
    @com.facebook.proguard.annotations.DoNotStrip *;
    @com.facebook.common.internal.DoNotStrip *;
}

-keepclassmembers @com.facebook.proguard.annotations.KeepGettersAndSetters class * {
  void set*(***);
  *** get*();
}

-keep class * extends com.facebook.react.bridge.JavaScriptModule { *; }
-keep class * extends com.facebook.react.bridge.NativeModule { *; }
-keepclassmembers,includedescriptorclasses class * { native <methods>; }
-keepclassmembers class *  { @com.facebook.react.uimanager.UIProp <fields>; }
-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactProp <methods>; }
-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactPropGroup <methods>; }

-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public class * extends com.bumptech.glide.module.AppGlideModule
-keep public enum com.bumptech.glide.load.ImageHeaderParser$** {
  **[] $VALUES;
  public *;
}
-keep class com.bumptech.glide.integration.okhttp3.OkHttpGlideModule

-dontwarn com.facebook.react.**
-keep,includedescriptorclasses class com.facebook.react.bridge.** { *; }

# RCTMGLAndroidTextureMapView
-keep class com.mapbox.rctmgl.components.** { *; }
-dontwarn com.mapbox.rctmgl.components.**


# okhttp

-keepattributes Signature
-keepattributes *Annotation*
-keep class okhttp3.** { *; }
-keep interface okhttp3.** { *; }
-dontwarn okhttp3.**

# okio

-keep class sun.misc.Unsafe { *; }
-dontwarn java.nio.file.*
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-dontwarn okio.**

# Firebase Notification, Crashlytics, Analytics
-keep class io.invertase.firebase.** { *; }
-keep class io.invertase.firebase.messaging.** { *; }
-keep class android.app.MiuiNotification { *; }


# Keep class by reference https://netmera.readme.io/docs/quick-start
-keep class com.netmera.** { *; }

# Gson specific classes
-keep class com.google.gson.stream.** { *; }

# Application classes that will be serialized/deserialized over Gson
-keep class com.google.gson.examples.android.model.** { *; }

# Prevent proguard from stripping interface information from TypeAdapterFactory,
# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
-keep class * implements com.google.gson.TypeAdapterFactory
-keep class * implements com.google.gson.JsonSerializer
-keep class * implements com.google.gson.JsonDeserializer


-keep class com.google.firebase.** { *; }

-keep class com.google.android.gms.** { *; }
-keep class com.google.protobuf.**

# if using notifications from RNFirebase
-keep class me.leolin.shortcutbadger.** { *; }

-keep class com.google.android.gms.** { *; }

[mikehardy]

I am using the standard one, and it works in release. I'm not saying it couldn't be proguard/D8/R8 doing it, but I'm saying the currently documented one does work for me

[datnhemployee]

Thanks for your answer, @mikehardy . I love to see your code of proguard-rules.pro as an attachment of your answer. Could you share it with me ? Again, thank you very much.

[mikehardy]

Here's the full thing

mike@Bendy:~/work/Kullki/kscoreapp-rxp (vp1) % more android/app/proguard-rules.pro 
# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /usr/local/Cellar/android-sdk/24.3.3/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# react-native-background-geolocation-android section
-keepnames class com.facebook.react.ReactActivity

# BackgroundGeolocation lib tslocationmanager.aar is *already* proguarded
-keep class com.transistorsoft.** { *; }
-dontwarn com.transistorsoft.**

# BackgroundGeolocation (EventBus)
-keepclassmembers class * extends de.greenrobot.event.util.ThrowableFailureEvent {
    <init>(java.lang.Throwable);
}
-keepattributes *Annotation*
-keepclassmembers class ** {
    @org.greenrobot.eventbus.Subscribe <methods>;
}
-keep enum org.greenrobot.eventbus.ThreadMode { *; }
-keepclassmembers class * extends org.greenrobot.eventbus.util.ThrowableFailureEvent {
    <init>(java.lang.Throwable);
}

# logback
-keep class ch.qos.** { *; }
-keep class org.slf4j.** { *; }
-dontwarn ch.qos.logback.core.net.*

# OkHttp3
-dontwarn okio.**
# end react-native-background-geolocation-android section

# react-native-firebase section
-keep class io.invertase.firebase.** { *; }
-dontwarn io.invertase.firebase.**
# end react-native-firebase section

# react-native-contacts
-keep class com.rt2zz.reactnativecontacts.** {*;}
-keepclassmembers class com.rt2zz.reactnativecontacts.** {*;}

# FIXME Just to test the build with ProGuard, likely not correct
-ignorewarnings
mike@Bendy:~/work/Kullki/kscoreapp-rxp (vp1) % 

Note my FIXME at the bottom has been there since I first integrated everything about a year ago, and I haven't gotten around to fixing it because it works

I believe the firebase sdk libraries have their own proguard files internal, thus no entries