How to migrate your Flutter app to AndroidX

If you’re getting build (Gradle) errors when adding recent versions of plugins, and if you’re having trouble following the instructions on the Android site, follow these instructions.

Under android/app/build.gradle, do the following changes:

Replace compileSdkVersion 27 with compileSdkVersion 28.

Under defaultConfig {:

Replace targetSdkVersion 27 with targetSdkVersion 28.

Replace android.support.test.runner.AndroidJUnitRunner with androidx.test.runner.AndroidJUnitRunner.

Under dependencies {:

Replace com.android.support.test.runner:1.0.2 with androidx.test.runner:1.1.1 and com.android.support.test.espresso:espresso-core:3.0.2 with androidx.test.espresso:espresso-core:3.1.1. (Version numbers may vary)

In android/gradle/wrapper/gradle-wrapper.properties

Change the line starting with distributionUrl like this:

distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

In android/build.gradle

Under dependencies {, change classpath 'com.android.tools.build:gradle:3.2.1' to classpath 'com.android.tools.build:gradle:3.3.0' .

In android/gradle.properties

Append the following:

android.enableJetifier=true
android.useAndroidX=true