samuel22gj

/**
 * Make the first {@link RecyclerView.ViewHolder} has parallax effect.
 */
public class ParallaxRecyclerView extends ECRecyclerView {
    private static final String TAG = ParallaxRecyclerView.class.getSimpleName();

    private static final float DEFAULT_PARALLAX_MULTIPLIER = 0.5f;

    private float mParallaxMultiplier = DEFAULT_PARALLAX_MULTIPLIER;
    private OnParallaxScrollListener mParallaxScrollListener;

samuel22gj

/**
 * SpacingDividerItemDecoration is a {@link RecyclerView.ItemDecoration} that can add space divider
 * between items of a {@link android.support.v7.widget.LinearLayoutManager}. It supports both {@link #HORIZONTAL}
 * and {@link #VERTICAL} orientations.
 */
public class SpacingDividerItemDecoration extends RecyclerView.ItemDecoration {

    @IntDef({HORIZONTAL, VERTICAL})
    @Retention(RetentionPolicy.SOURCE)
    public @interface OrientationMode {}

samuel22gj

/**
 * Class intended to support multiple click areas for a {@link View}.
 */
public abstract class ClickAreaHelper implements View.OnTouchListener, View.OnClickListener, View.OnLongClickListener {

    private OnClickAreaListener mOnClickAreaListener;
    private OnLongClickAreaListener mOnLongClickAreaListener;

    private View mView;

samuel22gj

public class ToolbarOffsetChangedListener implements AppBarLayout.OnOffsetChangedListener {
    private static final String TAG = "ToolbarOffsetChangedListener";

    private Toolbar toolbar;
    private Drawable[] icons;

    /**
     * 觸發開始改變顏色的 offset [0, - AppBar's height]
     */
    private int verticalOffsetTrigger = -1;

samuel22gj

/**
 * @see <a href="https://medium.com/androiddevelopers/windows-insets-fragment-transitions-9024b239a436">Windows Insets + Fragment Transitions</a>
 */
public class DispatchWindowInsetsToAllChildrenListener implements OnApplyWindowInsetsListener {

    @Override
    public WindowInsetsCompat onApplyWindowInsets(View view, WindowInsetsCompat windowInsetsCompat) {
        boolean consumed = false;

        if (view instanceof ViewGroup) {

samuel22gj

sealed class SharedPreferenceDelegates<in R, T> : ReadWriteProperty<R, T> {

    class BooleanType(
        private val sharedPreferences: SharedPreferences,
        private val key: String,
        private val defaultValue: Boolean = false
    ) : SharedPreferenceDelegates<Any?, Boolean>() {

        override fun getValue(thisRef: Any?, property: KProperty<*>): Boolean {
            return sharedPreferences.getBoolean(key, defaultValue)

samuel22gj

/**
 * Rule to be used in tests that display a Toast with class name and method name when each test starting.
 *
 * ```
 * @RunWith(AndroidJUnit4::class)
 * class FooTest {
 *
 *     @get:Rule
 *     val testNameToastRule = TestNameToastRule()
 *

samuel22gj

object RecyclerViewUtils {

    fun <VH : RecyclerView.ViewHolder> scrollToHolderWithFallback(
        recyclerViewMatcher: Matcher<View>,
        viewHolderMatcher: Matcher<VH>,
        failureViewAction: ViewAction,
        maxRetryCount: Int
    ) {
        var count = maxRetryCount

samuel22gj

/**
 * A customized [BottomNavigationView] with some convenience functions.
 */
class BottomNavigationViewPlus @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    @AttrRes defStyleAttr: Int = com.google.android.material.R.attr.bottomNavigationStyle
) : BottomNavigationView(
    context, attrs, defStyleAttr
) {

samuel22gj

/**
 * A mediator to link a fragment container with a BottomNavigationView.
 *
 * The mediator will synchronize the fragment container's content
 * with the selected item when a item of BottomNavigationView is selected.
 */
class FragmentBottomNavigationMediator(
    private val fragmentManager: FragmentManager,
    @IdRes private val containerViewId: Int,
    private val bottomNavigationView: BottomNavigationView,