Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.betterAlarm.deskclock; import android.app.Activity; import android.app.Fragment; import android.os.Bundle; import android.support.v4.widget.PopupMenuCompat; import android.view.MenuItem; import android.view.View; import android.widget.ImageButton; import android.widget.PopupMenu; import com.betterAlarm.deskclock.R; public class DeskClockFragment extends Fragment { protected ImageButton mFab; protected ImageButton mLeftButton; protected ImageButton mRightButton; public void onPageChanged(int page) { // Do nothing here , only in derived classes } public void onFabClick(View view) { // Do nothing here , only in derived classes } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); final Activity activity = getActivity(); if (activity instanceof DeskClock) { final DeskClock deskClockActivity = (DeskClock) activity; mFab = deskClockActivity.getFab(); mLeftButton = deskClockActivity.getLeftButton(); mRightButton = deskClockActivity.getRightButton(); } } public void setFabAppearance() { // Do nothing here , only in derived classes } public void setLeftRightButtonAppearance() { // Do nothing here , only in derived classes } public void onLeftButtonClick(View view) { // Do nothing here , only in derived classes } public void onRightButtonClick(View view) { // Do nothing here , only in derived classes } /** * Installs click and touch listeners on a fake overflow menu button. * * @param menuButton the fragment's fake overflow menu button */ public void setupFakeOverflowMenuButton(View menuButton) { final PopupMenu fakeOverflow = new PopupMenu(menuButton.getContext(), menuButton) { @Override public void show() { getActivity().onPrepareOptionsMenu(getMenu()); super.show(); } }; fakeOverflow.inflate(R.menu.desk_clock_menu); fakeOverflow.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { return getActivity().onOptionsItemSelected(item); } }); menuButton.setOnTouchListener(PopupMenuCompat.getDragToOpenListener(fakeOverflow)); menuButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { fakeOverflow.show(); } }); } }