Cordova Firebase Plugin Notification - Cannot add task ':processDebugGoogleServices' as a task with that name already exists

问题

i'm trying to add Google Firebase Notifications on my Phonegap Cordova app, built with Ionic. I've already installed successfully a Google Plus plugin for login (i think this would be a useful info).

I only need this Firebase plugin to complete my job but i've been stopped by this error when i build my app for Android.

A problem occurred configuring root project 'android'. Cannot add task ':processDebugGoogleServices' as a task with that name already exists.

I follow this tutorial for setup Cordova Plugin Firebase Cloud Messaging For Android

Here is my build.gradle file edited as the tutorial said:

apply plugin: 'com.android.application'

  buildscript {
    repositories {
       mavenCentral()
       jcenter()
    }


  dependencies {
    classpath 'com.android.tools.build:gradle:2.2.0'
    classpath 'com.google.gms:google-services:3.0.0'
  }
}

--------


dependencies {
   compile fileTree(dir: 'libs', include: '*.jar')
   // SUB-PROJECT DEPENDENCIES START
   debugCompile(project(path: "CordovaLib", configuration: "debug"))
   releaseCompile(project(path: "CordovaLib", configuration: "release"))
   compile "com.google.android.gms:play-services-plus:9.2.0"
   compile "com.google.android.gms:play-services-identity:9.2.0"
   compile "com.android.support:support-v4:+"
   compile "com.android.support:appcompat-v7:+"
   compile "com.android.support:appcompat-v7:23.2.1"
   compile "com.google.firebase:firebase-messaging:9.0.2"
   // SUB-PROJECT DEPENDENCIES END
}
apply plugin: 'com.google.gms.google-services'

回答1:

Had the same issue. It appears com.android.application already includes google-services. To fix it remove:

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

回答2:

use classpath 'com.android.tools.build:gradle:2.2.2' instead of classpath 'com.android.tools.build:gradle:2.2.0'

and use dependency

compile 'com.google.firebase:firebase-auth:10.0.1'
compile 'com.google.firebase:firebase-messaging:10.0.1'
compile 'com.google.android.gms:play-services-auth:10.0.1'

make sure that you add the google_service json file in your app folder

回答3:

I've find out a solution.

• remove platform android from project
• add again platform android (which reload all dependencies and plugin)
• repeat all steps on that guide (setup Firebase notifications)

Everything works well! The problem was on a conflict between Google Plus plugin and Firebase which requires both same services.

回答4:

fcmplugin.gradle and build.gradle need google-services

so, change this:

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

to this:

ext.postBuilderExtras = { 
  apply plugin : com.google.gms.googleservices.GoogleServicesPlugin
}

来源：https://stackoverflow.com/questions/41693915/cordova-firebase-plugin-notification-cannot-add-task-processdebuggoogleservi