Issue: Android app not building after using PushNotification

Hi. I am developing a multi platform app with Ionic - React using capacitor. ;I was trying to implement push notification feature as documented here and here.

I followed the instructions and add the google-services.json file to the android > app directory. After that sync the Gradle then try to bundle the app. But I encounter with these error messages in build output.

Executing tasks: [:app:assembleDebug] in project /Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/android


> Configure project :capacitor-android
WARNING: API 'variant.getJavaCompiler()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getJavaCompiler(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.
WARNING: API 'variantOutput.getPackageLibrary()' is obsolete and has been replaced with 'variant.getPackageLibraryProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variantOutput.getPackageLibrary(), use -Pandroid.debug.obsoleteApi=true on the command line to display a stack trace.

> Task :app:preBuild UP-TO-DATE
> Task :capacitor-android:preBuild UP-TO-DATE
> Task :capacitor-android:preDebugBuild UP-TO-DATE
> Task :capacitor-android:checkDebugManifest UP-TO-DATE
> Task :capacitor-android:processDebugManifest UP-TO-DATE
> Task :capacitor-cordova-android-plugins:preBuild UP-TO-DATE
> Task :capacitor-cordova-android-plugins:preDebugBuild UP-TO-DATE
> Task :capacitor-cordova-android-plugins:checkDebugManifest UP-TO-DATE
> Task :capacitor-cordova-android-plugins:processDebugManifest UP-TO-DATE
> Task :app:preDebugBuild UP-TO-DATE
> Task :capacitor-android:compileDebugAidl NO-SOURCE
> Task :capacitor-cordova-android-plugins:compileDebugAidl NO-SOURCE
> Task :app:compileDebugAidl NO-SOURCE
> Task :capacitor-android:packageDebugRenderscript NO-SOURCE
> Task :capacitor-cordova-android-plugins:packageDebugRenderscript NO-SOURCE
> Task :app:compileDebugRenderscript UP-TO-DATE
> Task :app:checkDebugManifest UP-TO-DATE
> Task :app:generateDebugBuildConfig UP-TO-DATE
> Task :app:prepareLintJar UP-TO-DATE
> Task :app:processDebugGoogleServices UP-TO-DATE
> Task :app:generateDebugSources UP-TO-DATE
> Task :capacitor-android:compileDebugRenderscript UP-TO-DATE
> Task :capacitor-android:generateDebugBuildConfig UP-TO-DATE
> Task :capacitor-android:generateDebugResValues UP-TO-DATE
> Task :capacitor-android:generateDebugResources UP-TO-DATE
> Task :capacitor-android:packageDebugResources UP-TO-DATE
> Task :capacitor-android:generateDebugRFile UP-TO-DATE
> Task :capacitor-android:prepareLintJar UP-TO-DATE
> Task :capacitor-android:generateDebugSources UP-TO-DATE
> Task :capacitor-android:javaPreCompileDebug UP-TO-DATE

> Task :capacitor-android:compileDebugJavaWithJavac FAILED
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:26: error: package com.google.android.gms.tasks does not exist
import com.google.android.gms.tasks.OnFailureListener;
                                   ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:27: error: package com.google.android.gms.tasks does not exist
import com.google.android.gms.tasks.OnSuccessListener;
                                   ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:28: error: package com.google.firebase.iid does not exist
import com.google.firebase.iid.FirebaseInstanceId;
                              ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:29: error: package com.google.firebase.iid does not exist
import com.google.firebase.iid.InstanceIdResult;
                              ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:30: error: package com.google.firebase.messaging does not exist
import com.google.firebase.messaging.FirebaseMessaging;
                                    ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:31: error: package com.google.firebase.messaging does not exist
import com.google.firebase.messaging.RemoteMessage;
                                    ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:52: error: cannot find symbol
  public static RemoteMessage lastMessage = null;
                ^
  symbol:   class RemoteMessage
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:267: error: cannot find symbol
  public static void sendRemoteMessage(RemoteMessage remoteMessage) {
                                       ^
  symbol:   class RemoteMessage
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:276: error: cannot find symbol
  public void fireNotification(RemoteMessage remoteMessage) {
                               ^
  symbol:   class RemoteMessage
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:4: error: package com.google.firebase.messaging does not exist
import com.google.firebase.messaging.FirebaseMessagingService;
                                    ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:5: error: package com.google.firebase.messaging does not exist
import com.google.firebase.messaging.RemoteMessage;
                                    ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:7: error: cannot find symbol
public class CapacitorFirebaseMessagingService extends FirebaseMessagingService {
                                                       ^
  symbol: class FirebaseMessagingService
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:16: error: cannot find symbol
  public void onMessageReceived(RemoteMessage remoteMessage) {
                                ^
  symbol:   class RemoteMessage
  location: class CapacitorFirebaseMessagingService
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:95: error: cannot find symbol
    FirebaseMessaging.getInstance().setAutoInitEnabled(true);
    ^
  symbol:   variable FirebaseMessaging
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:96: error: cannot find symbol
    FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(getActivity(), new OnSuccessListener<InstanceIdResult>() {
                                                                                             ^
  symbol:   class OnSuccessListener
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:96: error: cannot find symbol
    FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(getActivity(), new OnSuccessListener<InstanceIdResult>() {
                                                                                                               ^
  symbol:   class InstanceIdResult
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:96: error: cannot find symbol
    FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(getActivity(), new OnSuccessListener<InstanceIdResult>() {
    ^
  symbol:   variable FirebaseInstanceId
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:102: error: cannot find symbol
    FirebaseInstanceId.getInstance().getInstanceId().addOnFailureListener(new OnFailureListener() {
                                                                              ^
  symbol:   class OnFailureListener
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:102: error: cannot find symbol
    FirebaseInstanceId.getInstance().getInstanceId().addOnFailureListener(new OnFailureListener() {
    ^
  symbol:   variable FirebaseInstanceId
  location: class PushNotifications
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/plugin/PushNotifications.java:287: error: package RemoteMessage does not exist
    RemoteMessage.Notification notification = remoteMessage.getNotification();
                 ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:9: error: method does not override or implement a method from a supertype
  @Override
  ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:11: error: cannot find symbol
    super.onNewToken(newToken);
    ^
  symbol:   variable super
  location: class CapacitorFirebaseMessagingService
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:15: error: method does not override or implement a method from a supertype
  @Override
  ^
/Users/suleyman/Desktop/Projects/ionic-android-refresher-bug/IonicAndroidRefresher/node_modules/@capacitor/android/capacitor/src/main/java/com/getcapacitor/CapacitorFirebaseMessagingService.java:17: error: cannot find symbol
    super.onMessageReceived(remoteMessage);
    ^
  symbol:   variable super
  location: class CapacitorFirebaseMessagingService
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
24 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':capacitor-android:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/4.10.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 3s
18 actionable tasks: 1 executed, 17 up-to-date

This is my project build.gradle file:

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

buildscript {
    
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.2'
        classpath 'com.google.gms:google-services:4.3.3'

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

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

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

This is my app build.gradle file:

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

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.bdt.iar"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

repositories {
    maven {
        url  "https://dl.bintray.com/ionic-team/capacitor"
    }
    flatDir{
        dirs '../capacitor-cordova-android-plugins/src/main/libs', 'libs'
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation project(':capacitor-android')
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation project(':capacitor-cordova-android-plugins')

}

apply from: 'capacitor.build.gradle'

try {
    def servicesJSON = file('google-services.json')
    if (servicesJSON.text) {
        apply plugin: 'com.google.gms.google-services'
    }
} catch(Exception e) {
    logger.warn("google-services.json not found, google-services plugin not applied. Push Notifications won't work")
}

[priyankpat]

Add implementation 'com.google.firebase:firebase-messaging:20.1.0' to your dependencies in your app build.gradle.

[rahul-bmninfotech]

class file for android.app.Service not found