Could not find com.android.tools.build:aapt2:3.2.0

Question

AndroidStudio3.2 Canary14 fails clean-and-rebuild with the following error

Could not find com.android.tools.build:aapt2:3.2.0-alpha14-4748712.
Searched in the following locations:
    file:~/Library/Android/sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712.pom
    file:~/Library/Android/sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712-osx.jar
    file:~/Library/Android/sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712.pom
    file:~/Library/Android/sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712-osx.jar
    file:~/Library/Android/sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712.pom
    file:~/Library/Android/sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712-osx.jar
    https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712.pom
    https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712-osx.jar
Required by:
    project :app

Answer 1

Just add google() on your buidscript and allprojects then rebuild the project.

buildscript {
    repositories {
        google() // `enter code here`
    }
 }

allprojects {
    repositories {
        google() // `<-- here`
    }
}

Answer 2

Beginning with Android Studio 3.2 Canary 11, the source for AAPT2 (Android Asset Packaging Tool 2) is Google's Maven repository.

To use AAPT2, make sure that you have a google() dependency in your build.gradle file, as shown here:

buildscript {
  repositories {
      google() // here
      jcenter()
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:3.2.0-alpha12'
  }
} 
allprojects {
  repositories {
      google() // and here
      jcenter()
}

The new version of AAPT2 fixes many issues, including improved handling of non-ASCII characters on Windows.

Source: https://developer.android.com/studio/preview/features/?utm_source=android-studio&utm_medium=studio-assistant#aapt2_gmaven

Answer 3

Are you opening a very old project? If so, make sure your app's build.gradle has:

apply plugin: 'com.android.application'

repositories {
    google()
    jcenter()
} 

(That solved it for me anyways)