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<uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />

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<style name="AppTheme.MyRipple">
   <item name="colorControlHighlight">@color/your_color</item>
   <item name="android:background">?selectableItemBackgroundBorderless</item>
</style>

TypedValue outValue = new TypedValue();
getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
cardView.setBackgroundResource(outValue.resourceId);

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package com.example.sellectorsample;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

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import android.arch.lifecycle.ViewModel;
import android.arch.lifecycle.ViewModelProvider;

/**
 * A provider factory that persists ViewModels {@link ViewModel}.
 * Used if the view model has a parameterized constructor.
 */
public class ViewModelProviderFactory<V> implements ViewModelProvider.Factory {

    private V viewModel;

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    public static int getScreenWidth(@NonNull Context context) {
        Point size = new Point();
        ((Activity) context).getWindowManager().getDefaultDisplay().getSize(size);
        return size.x;
    }

    public static int getScreenHeight(@NonNull Context context) {
        Point size = new Point();
        ((Activity) context).getWindowManager().getDefaultDisplay().getSize(size);
        return size.y;

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/* Module level build.gradle */

android {
  
  defaultConfig {
    ...
    flavorDimensions "default"
  }

  signingConfigs {

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/*
* Automates generation of Release APK
* ./gradlew assembleRelease
* */
Properties props = new Properties()
def userHome = Paths.get(System.getProperty('user.home'));
def propFile = file(userHome.resolve('PATH_TO_SIGNING_CONFIG_PROPERTIES_FILE.properties'))
if (propFile.canRead()) {
    props.load(new FileInputStream(propFile))
    if (props != null && props.containsKey('STORE_FILE') && props.containsKey('KEY_STORE_PASSWORD') 

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variantFilter { variant ->
        // 'dev' flavor is only available for debug build
        if (!variant.buildType.name.equals('debug') && variant.getFlavors().get(0).name.equals("dev")) {
            variant.setIgnore(true)
        }
        // 'prod' flavor is only available for release build
        if (!(variant.buildType.name.equals('release') || variant.buildType.name.equals('alpha')) &&
            variant.getFlavors().get(0).name.equals("prod")) {
            variant.setIgnore(true)
        }

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class ArchLifecycleApp : Application(), LifecycleObserver {
    
    override fun onCreate() {
        super.onCreate()
        ProcessLifecycleOwner.get().lifecycle.addObserver(this)
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
    fun onAppBackgrounded() {
        Log.d("TAG", "App in background")

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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
  ((ViewGroup) findViewById(R.id.llRoot)).getLayoutTransition()
          .enableTransitionType(LayoutTransition.CHANGING);
}