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import androidx.recyclerview.widget.ListAdapter

/**
 * Creates a copy of itself if no new [data] is passed, this is used
 * so [ListAdapter] correctly diffs and animates. :facepalms:
 */
fun <T> List<T>.refresh(data: List<T> = this): List<T> {
    return mutableListOf<T>().apply { addAll(data) }.toList()
}

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// Extension function

fun TabLayout.setupWithViewPager2(
    viewPager: ViewPager2,
    callback: (TabLayout.Tab, Int) -> Unit
) {
    TabLayoutMediator(this, viewPager) { tab, position ->
        callback.invoke(tab, position)
    }.attach()
}

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fun RecyclerView.applyToolbarNavigationViewWithFabInsets() {
    applyVerticalInsets()
    clipToPadding = false
    addItemDecoration(RecyclerViewToolbarItemDecoration())
    addItemDecoration(RecyclerViewBottomNavigationViewFabItemDecoration())
}

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/************************************************
 *                 Insets Section               *
 ************************************************/

/*******************
 * Utility methods *
 *******************/

fun View.applySystemBarPaddingInsets() {
    this.doOnApplyWindowInsets { view, insets, padding, _ ->

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<style name="AppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
              
        ...

  <item name="android:windowLightStatusBar">true</item>
  <item name="android:statusBarColor">@color/colorStatusBar</item>
  <item name="android:windowBackground">@color/colorWindowBackground</item>
  <item name="android:navigationBarColor">@color/colorNavigationBar</item>
  <item name="android:windowLightNavigationBar">true</item>
  <item name="android:navigationBarDividerColor">@color/colorNavigationBarDivider</item>

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open class RecyclerViewMarginItemDecoration(
    private val sizeInDp: Int = 16,
    private val isTop: Boolean = false
) : RecyclerView.ItemDecoration() {

    override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
        super.getItemOffsets(outRect, view, parent, state)
        if (isTop) {
            if (parent.getChildAdapterPosition(view) == 0) {
                outRect.top = sizeInDp.toPx()

JoaquimLey

import androidx.annotation.MainThread
import androidx.annotation.Nullable
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.Observer
import java.util.concurrent.atomic.AtomicBoolean

/**

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public class BusListActivity extends AppCompatActivity implements LifecycleRegistryOwner,
		BusListAdapter.ClickListener {

	private final LifecycleRegistry lifecycleRegistry = new LifecycleRegistry(this);

	private BusListViewModel viewModel;

	private BusListAdapter adapter;
	private ContentLoadingProgressBar progressDialogView;

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public class BusRepository {

	private static BusRepository sInstance;

	private final RemoteRepository remoteRepository;
	private final BusDao busDao;

	public static BusRepository getInstance(RemoteRepository remoteRepository, BusDao busDao) {
		if (sInstance == null) {

JoaquimLey

/**
 * Subclass of VideoView to enable video scaling
 * CustomAttribute: "scaleType": "normal", "centerCrop", "fill"
 * <p>
 * Add this stylable:
 * <declare-styleable name="IntroVideoView">
 * <attr name="scaleType" format="integer">
 * <flag name="normal" value="0" />
 * <flag name="centerCrop" value="1" />
 * <flag name="fill" value="2" />