Could Not Find Com.Android.Tools.Build:Aapt2:3.2.0

Android Studio 3.2 - Could not find com.android.tools.build:aapt2:3.2.0-4818971

Most likely you do not have the Google repository in your project's build.gradle file. Add google() in BOTH locations as shown below:

buildscript {

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

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

Android studio Could not find com.android.tools.build:aapt2:3.2.0-4818971

Add google() do your build.gradle file:

buildscript {

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

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

Could not find com.android.tools.build:aapt2:4.0.0-6051327

add google() dependency in your build.gradle file.

allprojects {
  repositories {
      google() // this one is missing in your code
      jcenter()
  }
}

and use implementation instead of compile as it was deprecated.

Could not find aapt2-proto.jar (com.android.tools.build:aapt2-proto:0.3.1)

This is due you didn’t put google() as the first repo. The order of google() matters. So just add it above jcenter() will solve your problem.

See https://stackoverflow.com/a/51151050/8034839

Note that this change should be in your TOP level build.gradle file. E.g.

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

buildscript {

    repositories {
        google() // first one
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'

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

allprojects {
    repositories {
        google() // first one
        jcenter()
    }
}

Note:

Since Android Gradle Plugin (AGP) version 3.0.0 (Gradle version 4.1+), Google introduced its own Google's Maven repository google(), most of the dependencies were moved to there. So, if you are using the AGP 3.0+, you should refer to this NEW repo firstly.

And here is some explanation about different gradle versions: What is real Android Studio Gradle Version?

Build errors after Android Studio 3.2.1 upgrade

For Android Studio 3.2.1 update

Just add google() in root level build.gradle

buildscript {
    repositories {
        google()   //  <--here
        jcenter()
    }
 }

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

and see the magic - error is gone.

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