public AlbumsSpinner(@NonNull Context context) {
    mListPopupWindow = new ListPopupWindow(context, null, R.attr.listPopupWindowStyle);
    mListPopupWindow.setModal(true);
    float density = context.getResources().getDisplayMetrics().density;
    mListPopupWindow.setContentWidth((int) (216 * density));
    mListPopupWindow.setHorizontalOffset((int) (16 * density));
    mListPopupWindow.setVerticalOffset((int) (-48 * density));

    mListPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            AlbumsSpinner.this.onItemSelected(parent.getContext(), position);
            if (mOnItemSelectedListener != null) {
                mOnItemSelectedListener.onItemSelected(parent, view, position, id);
            }
        }
    });
}
 

@Override
public View onCreateDemoView(
    LayoutInflater layoutInflater, @Nullable ViewGroup viewGroup, @Nullable Bundle bundle) {
  View view = layoutInflater.inflate(R.layout.cat_menu_fragment, viewGroup, false);
  Button button = view.findViewById(R.id.menu_button);
  Button iconMenuButton = view.findViewById(R.id.menu_button_with_icons);
  button.setOnClickListener(v -> showMenu(v, R.menu.popup_menu));
  iconMenuButton.setOnClickListener(v -> showMenu(v, R.menu.menu_with_icons));

  TextView contextMenuTextView = view.findViewById(R.id.context_menu_tv);
  registerForContextMenu(contextMenuTextView);

  Button listPopupWindowButton = view.findViewById(R.id.list_popup_window);
  ListPopupWindow listPopupWindow = initializeListPopupMenu(listPopupWindowButton);
  listPopupWindowButton.setOnClickListener(v -> listPopupWindow.show());

  return view;
}
 

private ListPopupWindow initializeListPopupMenu(View v) {
  ListPopupWindow listPopupWindow =
      new ListPopupWindow(getContext(), null, R.attr.listPopupWindowStyle);
  ArrayAdapter<CharSequence> adapter =
      new ArrayAdapter<>(
          getContext(),
          popupItemLayout,
          getResources().getStringArray(R.array.cat_list_popup_window_content));
  listPopupWindow.setAdapter(adapter);
  listPopupWindow.setAnchorView(v);
  listPopupWindow.setOnItemClickListener(
      (parent, view, position, id) -> {
        Snackbar.make(
                getActivity().findViewById(android.R.id.content),
                adapter.getItem(position).toString(),
                Snackbar.LENGTH_LONG)
            .show();
        listPopupWindow.dismiss();
      });
  return listPopupWindow;
}
 

private Popup(Builder builder) {
    mPopupWindow = new ListPopupWindow(builder.mContext);
    mAdapter = new PopupAdapter(builder.mContext, builder.mItems);

    int width = getMeasuredWidth(builder.mContext);
    mPopupWindow.setWidth(width);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Drawable drawable = mPopupWindow.getBackground();
        if (drawable != null) {
            drawable.setColorFilter(ColorHelper.getAttributeColor(
                    builder.mContext, R.attr.card_background), PorterDuff.Mode.SRC_IN);
        }
    } else {
        mPopupWindow.setBackgroundDrawable(new ColorDrawable(
                ColorHelper.getAttributeColor(builder.mContext, R.attr.card_background)));
    }

    mPopupWindow.setAnchorView(builder.mTo);
    mPopupWindow.setAdapter(mAdapter);
    mPopupWindow.setOnItemClickListener((adapterView, view, i, l) -> {
        if (builder.mCallback != null) {
            builder.mCallback.onClick(this, i);
            return;
        }

        mPopupWindow.dismiss();
    });
}
 

public TransportOptionsPopup(@NonNull Context context, @NonNull View anchor, @NonNull SelectedListener listener) {
  super(context);
  this.listener = listener;
  this.adapter  = new TransportOptionsAdapter(context, new LinkedList<TransportOption>());

  setVerticalOffset(context.getResources().getDimensionPixelOffset(R.dimen.transport_selection_popup_yoff));
  setHorizontalOffset(context.getResources().getDimensionPixelOffset(R.dimen.transport_selection_popup_xoff));
  setInputMethodMode(ListPopupWindow.INPUT_METHOD_NOT_NEEDED);
  setModal(true);
  setAnchorView(anchor);
  setAdapter(adapter);
  setContentWidth(context.getResources().getDimensionPixelSize(R.dimen.transport_selection_popup_width));

  setOnItemClickListener(this);
}
 

@SuppressLint("RestrictedApi")
private void init(Context context, AttributeSet attrs, int defStyleAttr) {
    setInputType(InputType.TYPE_NULL);
    setCursorVisible(false);
    Drawable arrow = getResources().getDrawable(R.drawable.ic_arrow_drop_down_black_24dp);
    arrow.setBounds(0, 0, arrow.getIntrinsicWidth(), arrow.getIntrinsicHeight());
    setCompoundDrawablesRelative(null, null, arrow, null);
    AppCompat.setTint(arrow, getResources().getColor(R.color.colorMenuText));

    TypedArray a = context.obtainStyledAttributes(attrs,
            R.styleable.TextInputSpinner, defStyleAttr, 0);
    mEntities = a.getTextArray(R.styleable.TextInputSpinner_android_entries);
    a.recycle();

    mPopup = new ListPopupWindow(context, attrs, defStyleAttr, R.style.AppTheme_PopupMenu_Overflow);
    mPopup.setAdapter(new ArrayAdapter<>(context, R.layout.support_simple_spinner_dropdown_item, mEntities));
    mPopup.setOnItemClickListener((parent, view, position, id) -> {
        setSelection(position);
        mPopup.dismiss();
    });
    mPopup.setAnchorView(this);
    mPopup.setVerticalOffset(-ScreenUtils.dpToPx(5));
    mPopup.setHorizontalOffset(ScreenUtils.dpToPx(4));
    mPopup.setWidth(getResources().getDisplayMetrics().widthPixels - ScreenUtils.dpToPx(16));
    mPopup.setModal(true);

    setSelection(0);
}
 

private void selectPreset(EditText editText, CharSequence[] presets) {
    ListPopupWindow menu = new ListPopupWindow(editText.getContext());
    menu.setAnchorView(editText);
    menu.setAdapter(new ArrayAdapter<>(this,
            R.layout.activity_message_format_settings_preset, presets));
    menu.setOnItemClickListener((AdapterView<?> parent, View view, int position, long id) -> {
        editText.setText(presets[position]);
        menu.dismiss();
    });
    menu.show();
}
 

public TransportOptionsPopup(@NonNull Context context, @NonNull View anchor, @NonNull SelectedListener listener) {
  super(context);
  this.listener = listener;
  this.adapter  = new TransportOptionsAdapter(context, new LinkedList<TransportOption>());

  setVerticalOffset(context.getResources().getDimensionPixelOffset(R.dimen.transport_selection_popup_yoff));
  setHorizontalOffset(context.getResources().getDimensionPixelOffset(R.dimen.transport_selection_popup_xoff));
  setInputMethodMode(ListPopupWindow.INPUT_METHOD_NOT_NEEDED);
  setModal(true);
  setAnchorView(anchor);
  setAdapter(adapter);
  setContentWidth(context.getResources().getDimensionPixelSize(R.dimen.transport_selection_popup_width));

  setOnItemClickListener(this);
}
 

public MaterialAutoCompleteTextView(
    @NonNull Context context, @Nullable AttributeSet attributeSet, int defStyleAttr) {
  super(wrap(context, attributeSet, defStyleAttr, 0), attributeSet, defStyleAttr);
  // Ensure we are using the correctly themed context rather than the context that was passed in.
  context = getContext();

  TypedArray attributes =
      ThemeEnforcement.obtainStyledAttributes(
          context,
          attributeSet,
          R.styleable.MaterialAutoCompleteTextView,
          defStyleAttr,
          R.style.Widget_AppCompat_AutoCompleteTextView);

  // Due to a framework bug, setting android:inputType="none" on xml has no effect. Therefore,
  // we check it here in case the autoCompleteTextView should be non-editable.
  if (attributes.hasValue(R.styleable.MaterialAutoCompleteTextView_android_inputType)) {
    int inputType =
        attributes.getInt(
            R.styleable.MaterialAutoCompleteTextView_android_inputType, InputType.TYPE_NULL);
    if (inputType == InputType.TYPE_NULL) {
      setKeyListener(null);
    }
  }

  accessibilityManager =
      (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);

  modalListPopup = new ListPopupWindow(context);
  modalListPopup.setModal(true);
  modalListPopup.setAnchorView(this);
  modalListPopup.setInputMethodMode(ListPopupWindow.INPUT_METHOD_NOT_NEEDED);
  modalListPopup.setAdapter(getAdapter());
  modalListPopup.setOnItemClickListener(
      new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View selectedView, int position, long id) {
          Object selectedItem =
              position < 0 ? modalListPopup.getSelectedItem() : getAdapter().getItem(position);

          updateText(selectedItem);

          OnItemClickListener userOnitemClickListener = getOnItemClickListener();
          if (userOnitemClickListener != null) {
            if (selectedView == null || position < 0) {
              selectedView = modalListPopup.getSelectedView();
              position = modalListPopup.getSelectedItemPosition();
              id = modalListPopup.getSelectedItemId();
            }
            userOnitemClickListener.onItemClick(
                modalListPopup.getListView(), selectedView, position, id);
          }

          modalListPopup.dismiss();
        }
      });

  attributes.recycle();
}