API 'variant.getExternalNativeBuildTasks()'

Question

Using Android Studio 3.3 Canary 11 with the gradle plugin version 3.3.0-alpha11. It throws the following error when trying to sync gradle

WARNING: API 'variant.getExternalNativeBuildTasks()' is obsolete and has been 
replaced with 'variant.getExternalNativeBuildProviders()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration- 
avoidance
Affected Modules: app

Clicking on the error leads me to this line in the gradle file

applicationVariants.all { variant ->
            variant.outputs.all {
                outputFileName = "${variant.name}-${variant.versionName}.apk"
            }
        }

What exactly do I need to change here?

project build.gradle

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

buildscript {
    repositories {
        jcenter()
        mavenCentral() // jcenter() works as well because it pulls from Maven Central
        maven { url "https://maven.google.com" }
        google()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-alpha11'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath "io.realm:realm-gradle-plugin:4.1.1"
        classpath 'com.google.gms:google-services:3.2.1'
        classpath 'com.google.firebase:firebase-plugins:1.1.5'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://maven.google.com" }
    }
}

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

// Define versions in a single place
ext {
    // Sdk and tools
    minSdkVersion = 21
    targetSdkVersion = 27
    compileSdkVersion = 27
    buildToolsVersion = '27.0.3'

    // App dependencies
    supportLibraryVersion = '27.1.1'
    appCompactLibraryVersion = '27.1.1'
    playServicesVersion = '15.0.1'
    firebaseVersionCore = '16.0.1'
    firebaseVersionPerf = '16.0.0'
    firebaseVersionMessaging = '17.1.0'

    //lottie
    lottieVersion = '2.5.0'
}

app build.gradle

buildscript {
    repositories {
        maven { url 'https://maven.fabric.io/public' }
    }

    dependencies {
        classpath 'io.fabric.tools:gradle:1.25.4'
    }
    buildscript {
        repositories {
            maven { url "https://maven.google.com" }
            maven { url 'https://maven.fabric.io/public' }
            mavenCentral()

        }

        dependencies {
            // These docs use an open ended version so that our plugin
            // can be updated quickly in response to Android tooling updates

            // We recommend changing it to the latest version from our changelog:
            // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
            classpath 'io.fabric.tools:gradle:'
        }
    }
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.firebase.firebase-perf'
repositories {
    maven { url 'https://maven.fabric.io/public' }
}

apply plugin: 'io.fabric'
apply plugin: 'realm-android'

android {

    realm {
        syncEnabled = false
    }

    dexOptions {
        javaMaxHeapSize "4g"
    }

    compileSdkVersion rootProject.ext.compileSdkVersion

    defaultConfig {
        applicationId "example.com"
        minSdkVersion rootProject.ext.minSdkVersion
        multiDexEnabled true
        versionCode mVersionCode
        versionName mVersionName
        vectorDrawables.useSupportLibrary = true

    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    buildTypes {

        applicationVariants.all { variant ->
            variant.outputs.all {
                outputFileName = "${variant.name}-${variant.versionName}.apk"
            }
        }

        release {
            shrinkResources true
            minifyEnabled true
            useProguard true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            lintOptions {
                disable 'MissingTranslation'
            }

            applicationVariants.all { variant ->
                variant.outputs.all {
                    outputFileName = "${variant.name}-${variant.versionName}.apk"
                }
            }

        }
        debug {
            shrinkResources true
            minifyEnabled true
            useProguard true
            debuggable true
            versionNameSuffix '-DEBUG'
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'debug-proguard-rules.pro'

            ext.enableCrashlytics = false
            crunchPngs false

        }
    }

    flavorDimensions "default"

    lintOptions {

        checkReleaseBuilds false

    }

    packagingOptions {
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
    }
    buildToolsVersion '28.0.2'
}

configurations {
    implementation.exclude group: "org.apache.httpcomponents", module: "httpclient"
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation "com.android.support:appcompat-v7:$rootProject.appCompactLibraryVersion"
    implementation "com.android.support:support-compat:$rootProject.supportLibraryVersion"
    implementation "com.android.support:mediarouter-v7:$rootProject.supportLibraryVersion"
    implementation "com.android.support:cardview-v7:$rootProject.supportLibraryVersion"
    implementation "com.android.support:design:$rootProject.supportLibraryVersion"


    api 'com.squareup.retrofit2:retrofit:2.4.0'
    api 'com.squareup.okhttp3:okhttp:3.11.0'
    api 'com.squareup.okhttp3:logging-interceptor:3.10.0'
    implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
    implementation 'com.squareup.picasso:picasso:2.5.2'
    implementation 'com.squareup.retrofit2:adapter-rxjava:2.3.0'
    implementation 'com.android.support:multidex:1.0.3'
    implementation 'com.daimajia.easing:library:2.0@aar'
    implementation 'com.daimajia.androidanimations:library:2.3@aar'

    implementation 'com.akexorcist:googledirectionlibrary:1.0.5'
    implementation 'io.reactivex:rxandroid:1.2.1'
    implementation 'io.reactivex:rxjava:1.3.0'
    // Wifi hotspot library
    implementation 'cc.mvdan.accesspoint:library:0.2.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'org.jsoup:jsoup:1.10.3'
    api "com.airbnb.android:lottie:$rootProject.lottieVersion"
    implementation 'com.android.support:support-v4:27.1.1'
    implementation 'com.android.support:recyclerview-v7:27.1.1'
    testImplementation 'junit:junit:4.12'
    implementation 'com.jakewharton:butterknife:8.8.1'

    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'
    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'

    implementation 'com.googlecode.libphonenumber:libphonenumber:8.2.0'

    implementation "com.google.android.gms:play-services-base:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-cast-framework:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-auth:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-identity:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-awareness:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-cast:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-drive:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-location:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-maps:$rootProject.playServicesVersion"

    implementation "com.google.firebase:firebase-core:$rootProject.firebaseVersionCore"
    implementation "com.google.firebase:firebase-perf:$rootProject.firebaseVersionPerf"
    implementation "com.google.firebase:firebase-messaging:$rootProject.firebaseVersionMessaging"
    implementation "com.google.firebase:firebase-analytics:$rootProject.firebaseVersionCore"


    api('com.crashlytics.sdk.android:crashlytics:2.8.0@aar') {
        transitive = true
    }
    api('com.crashlytics.sdk.android:answers:1.4.1@aar') {
        transitive = true
    }
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    api project(path: ':libraryBTHelper')
    api project(':bkk_rush')

    debugApi 'com.amitshekhar.android:debug-db:1.0.3'
    api "org.jdeferred:jdeferred-android-aar:1.2.6"
    implementation 'com.android.support:gridlayout-v7:27.1.1'
}

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

I have skipped out a few constants and other sensitive information in the app/build.gradle file.

Answer 1

in application build.gradle , back to this version of gradle :

classpath 'com.android.tools.build:gradle:3.2.1'

temp solution until they fix it !

Answer 2

the issue-tracker might refer to "lazy task configuration" -

that's at least what task configuration avoidance suggests.

but one possibly can prevent the access to this obsolete method of BaseVariantImpl, when variant.outputs.all won't access that method (internally) - or when checks can prevent the access; or when accessing the variant by it's name; or somehow disable the external native build tasks for the variant. also see the single-variant project sync option, which rather seems related.

or wait for build-tools 3.3.0-alpha12 or 3.3.0-beta1 ...this is not even a release candidate, therefore investing to much time might be pointless - except using it to file another bug-report.

the new quick feedback button still looks the most promising.

Answer 3

Build log prints how to debug this, particularly you need to run build with -Pandroid.debug.obsoleteApi=true, that'll print stack-trace of call to deprecated API and you'll be able to figure which plugin/code calls it.

If it ends up being your code — use new Provider API (read Lazy Task Configuration doc)

If it comes from other plugin — report to them with stack-trace and warning message and maybe submit a patch. As in this case its related to io.fabric issue.

Answer 4

When I opened the project, I pressed the Run migrations button appeared on the right bottom corner from Android Studio. A migration was performed and the problem was solve without commenting out the Crashlytics dependency.

Answer 5

Not sure what the actual issue is but commenting out the crashlytics related dependencies from the project solved issue.

Answer 6

In my case, I had to comment out io.fabric plugin:

apply plugin: 'com.android.application'
// apply plugin: 'io.fabric' <== this plugin causes the error

It happens after I updated Android Studio to 3.3.0.

I have sent a bug report to Firebase team about this issue.

For now, just downgrade to Android Studio 3.2.1.