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.

Answer 2

api 'com.android.support:appcompat-v7:24.2.1'
api 'com.android.support:support-v4:24.2.1'

That's your problem right there. Even without Firebase, this should've been causing issues. You're targeting and building with API 28, but your support dependencies are at API 24. Change them to use 28.0.0.

Also check your extension-api and haxe-firebase projects and make sure they're using the latest compile and SDK versions, as well as build tools version and support library versions.