prbale

protected OnBackPressedListener onBackPressedListener;

//...

public void setOnBackPressedListener(OnBackPressedListener onBackPressedListener) {
    this.onBackPressedListener = onBackPressedListener;
}

//...

prbale

<!-- Deep Link Activity : Start -->
        <activity
            android:name=".deeplinks.LinkDispatcherActivity"
            android:alwaysRetainTaskState="true"
            android:launchMode="singleTask"
            android:noHistory="true"
            android:theme="@android:style/Theme.Translucent.NoTitleBar">
            <intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>

prbale

/**
 * The `fragment` is added to the container view with id `frameId`.
 * The operation is performed by the `fragmentManager`.
 */
fun AppCompatActivity.addFragment(
    fragmentManager: FragmentManager,
    fragment: Fragment,
    frameId: Int) {

prbale

class AccountDetailsActivity : Activity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val accountNumber = intent.getStringExtra(ACCOUNT_NUMBER)
                ?: throw IllegalStateException("ACCOUNT_NUMBER is mandatory in the Intent")
    }

    companion object {
        private val ACCOUNT_NUMBER = "ACCOUNT_NUMBER"

prbale

/**
 * Declaring Response class as sealed class means,
 * It is an Abstract class like in Java. We can have all the features
 * in Sealed class which Abstract class has.
 * In this example, added one property field to sealed class "Tag" and
 * This is overridden in the classes extended to this sealed class.
 * Sealed classes are used to have restricted hierarchy.
 */
sealed class Response {
  open var tag: String = ""