Fixing 'Error:Unsupported method: BaseConfig.getApplicationIdSuffix()' issue in Android Studio

Background

I tried importing an old android project into my Android Studio and the build was failing with following error -

Error:Unsupported method: BaseConfig.getApplicationIdSuffix().
The version of Gradle you connect to does not support that method.
To resolve the problem you can change/upgrade the target version of Gradle you connect to.
Alternatively, you can ignore this exception and read other information from the model.

Solution

As the error itself says solution is to upgrade gradle version.

Go to project level build.gradle. For me it looks like below -

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

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'

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

allprojects {
    repositories {
        jcenter()
    }
}

Just upgrade the gradle version from 1.2.3 (or whatever you have)  to 3.0.1. You can try upgrading to other higher versions as well. This is what worked for me. So the build.gradle looks like below -

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

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

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

allprojects {
    repositories {
        jcenter()
    }
}

Once you do that click on "Try again" and the gradle sync should go through.