org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesWithDexForDebug'

Question

Due to 65K error in my project I need it to migrate to Android Studio . While running

./gradlew assembleDebug

I am

Answer 1

Migrate to androidX library

With Android Studio 3.2 and higher, you can migrate an existing project to AndroidX by selecting Refactor > Migrate to AndroidX from the menu bar.

Source: https://developer.android.com/jetpack/androidx/migrate

Answer 2

you just change import android.support.v7.app.ActionBarActivity; to import android.support.v7.app.AppCompatActivity;

and extends AppCompatActivity

Answer 3

clear project and then run. it will work

Answer 4

first you remove this thing in your project .. its is in build.gradle(module:app) then build your app now you project show the actual error and you find what is your actual problem is .. and after you find actual problem again paste it where its is belong to

allprojects { gradle.projectsEvaluated {

    tasks.withType(JavaCompile)

{ options.encoding = 'UTF-8'

        options.compilerArgs

<< "-Xlint:unchecked" << "-Xlint:deprecation"}]}}