找不到 com.android.tools.build:gradle:3.4.2

Question

After installing nativescript-plugin-firebase I can't build my app anynore with tns build android . I get this error:

nativescript-plugin-firebase: running release build or change in environment detected, forcing prepare!

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'nativescript_plugin_firebase'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not find com.android.tools.build:gradle:3.4.2.
     Searched in the following locations:
       - https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.2/gradle-3.4.2.pom
       - https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.2/gradle-3.4.2.jar
       - https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.2/gradle-3.4.2.pom
       - https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.2/gradle-3.4.2.jar
     Required by:
         project :

Here is my platforms/android/build.gradle

// 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:3.4.2'
    }
}

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

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

Here is platforms/android/app/build.gradle :

Here is platforms/tempPlugin/nativescript_plugin_firebase/build.gradle

Answer 1

You probably have another plugin depending on Google Play Services (Google Maps, perhaps). We need to pin to a specific play services version to play nice with others, so open app/App_Resources/Android/app.gradle and add:

Example

android {   
            project.ext {
            googlePlayServicesVersion = "15.0.0"   //"16.0.+
          }
       configurations.all {
             resolutionStrategy.force "com.google.android.gms:play-services-auth:$project.googlePlayServicesVersion"
           }
    }

If same issue coming then use

classpath 'com.android.tools.build:gradle:3.4.1'

FYI Read Android plugin for Gradle HTTP proxy settings

defaultConfig {
        ...
        systemProp.http.proxyHost=proxy.company.com
        systemProp.http.proxyPort=443
        systemProp.http.proxyUser=userid
        systemProp.http.proxyPassword=password
        systemProp.http.auth.ntlm.domain=domain
    }