Failed to resolve com.android.support:support-annotations 26.0.1

Question

dependencies {
    compile fileTree(dir: \'libs\', include: [\'*.jar\'])
    androidTestCompile(\'com.android.support.test.espresso:espresso-core:2.2.2\', {
                 


        

Answer 1

All current editions of Google libraries reside in Google's Maven repository (maven.google.com), not in the old offline-capable support repositories.

In your project-level build.gradle file, make sure that your allprojects closure looks like this:

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

or, on Android Studio 3.0+, like this:

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

Answer 2

I resolved this issue by adding the below in project level build.gradle file.

buildscript {

    repositories {
        jcenter()
        google()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'


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

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

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

Answer 3

Even with Android Studio 3.0.+, I had to add this below (not just google() like @CommonsWare recommended), to get pass the error

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

}