Could not find support-media-compat.aar

Question

Trying Firebase to an android gradle app. As soon as I add the firebase dependency I get the following build error.

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all files for configuration ':app:debugCompileClasspath'.
> Could not find support-media-compat.aar (com.android.support:support-media-compat:26.1.0).
  Searched in the following locations:
      https://jcenter.bintray.com/com/android/support/support-media-compat/26.1.0/support-media-compat-26.1.0.aar
> Could not find support-core-utils.aar (com.android.support:support-core-utils:26.1.0).
  Searched in the following locations:
      https://jcenter.bintray.com/com/android/support/support-core-utils/26.1.0/support-core-utils-26.1.0.aar
> Could not find support-compat.aar (com.android.support:support-compat:26.1.0).
  Searched in the following locations:
      https://jcenter.bintray.com/com/android/support/support-compat/26.1.0/support-compat-26.1.0.aar
> Could not find support-compat.aar (com.android.support:support-compat:26.1.0).
  Searched in the following locations:
      https://jcenter.bintray.com/com/android/support/support-compat/26.1.0/support-compat-26.1.0.aar

It looks like it's only searching jcenter. But every reference of jcenter has other repos listed to search.

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:3.2.0"

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

        classpath 'com.google.gms:google-services:4.2.0' // google-services plugin
    }
}

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

app/build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3"
    defaultConfig {
        applicationId "io.nme.samples.displayingabitmap"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 181
        versionName "1.0.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    api fileTree(dir: 'libs', include: ['*.jar'])
    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    api 'com.android.support:appcompat-v7:24.2.1'
    api 'com.android.support:support-v4:24.2.1'

    testImplementation 'junit:junit:4.12'

    dependencies {

        api project(':extension-api')
        api project(':haxe-firebase')
    }

    implementation 'com.google.firebase:firebase-core:16.0.4'
}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

What am I missing here?

Answer 1

I came across the same issue about locating libraries. However by adjusting the repositories order, this issue has been resolved.

repositories {
    google()
    jcenter()
    // others
}

It seems that a maven site hosted by google is what we're looking for in the first place.

BTW, maven { url 'https://maven.google.com'} is used for Gradle version lower than 4.1 and google() is the newer form of that. See also this doc.