Migrate to AndroidX

Android Q

Android official website provides a page to introduce how to migrate your existing project to AndroidX. Here is my migration step.

1. You have to add these two attrs in your gradle.properties

android.useAndroidX=true
android.enableJetifier=true

2. Update your compileSdkVersion, targetSdkVersion to 28. Like the below example.

compileSdkVersion 28
defaultConfig {
    applicationId "com.your.package"
    minSdkVersion 19
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "androidx.support.test.runner.AndroidJUnitRunner"
}

3. upgrade your dependencies to the AndroidX newest. For dependencies, the version can refer to maven.

4. You need to modify your layout and .java/.kt since the package name is using AndroidX for now. Like:

android.support.constraint.ConstraintLayout => androidx.constraintlayout.widget.ConstraintLayout
android.support.v4.widget.SwipeRefreshLayou => androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android.support.v7.widget.RecyclerView => androidx.recyclerview.widget.RecyclerView
android.support.v7.widget.CardView => androidx.cardview.widget.CardView
android.support.v7.widget.Toolbar => androidx.appcompat.widget.Toolbar
android.support.design.widget.TextInputLayout => com.google.android.material.textfield.TextInputLayout
...etc

Can check Class Mapping

Finally, we can use the dependencies graph to check if any conflict occurs.

//stagingDebug need replace with your product flavor name.
> ./gradlew -q dependencies app:dependencies --configuration stagingDebugAndroidTestCompileClasspath

If you need to check changes between before & after. You can refer to my migrated pr at Github here