Java tutorial
/* * Copyright (C) 2015 Kyle O'Shaughnessy, Ross Anderson, Michelle Mabuyo, John Slevinsky, Udey Rishi, Quentin Lautischer * Photography equipment trading application for CMPUT 301 at the University of Alberta. * * This file is part of "Trading Post" * * "Trading Post" is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package ca.ualberta.cmput301.t03.user; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import org.parceler.Parcels; import java.io.IOException; import ca.ualberta.cmput301.t03.Observable; import ca.ualberta.cmput301.t03.Observer; import ca.ualberta.cmput301.t03.PrimaryUser; import ca.ualberta.cmput301.t03.R; import com.udeyrishi.androidelasticsearchdatamanager.exceptions.ServiceNotAvailableException; /** * Fragment which provides an interface for viewing a {@link User}'s {@link UserProfile}. */ public class ViewProfileFragment extends Fragment implements Observer { // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER private static final String ARG_PARAM1 = "user"; private UserProfile model; private TextView cityView; private TextView phoneView; private TextView usernameView; private TextView emailView; private Button browseInventoryButton; private User mUserToView; /** * DO NOT CALL THIS CONSTRUCTOR DIRECTLY! * * Use newInstance instead. */ public ViewProfileFragment() { // Required empty public constructor } /** * Use this factory method to create a new instance of * this fragment using the provided parameters. * * ex. * User u = new User("john12345", getContext()); * ViewProfileFragment v = ViewProfileFragment.newInstance(u); * getSupportFragmentManager() * .beginTransaction() * .add(R.id.my_content_view, v) * .commit() * * @param user The User whose profile should be viewed. * @return A new instance of fragment ViewProfileFragment. */ public static ViewProfileFragment newInstance(User user) { ViewProfileFragment fragment = new ViewProfileFragment(); Bundle args = new Bundle(); args.putParcelable(ARG_PARAM1, Parcels.wrap(user)); fragment.setArguments(args); return fragment; } /** * {@inheritDoc} */ @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); if (PrimaryUser.getInstance().equals(mUserToView)) { inflater.inflate(R.menu.fragment_view_profile, menu); } } /** * {@inheritDoc} */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments() != null) { // String username = getArguments().getString(ARG_PARAM1); mUserToView = Parcels.unwrap(getArguments().getParcelable(ARG_PARAM1)); // mUserToView = new User(username, getActivity().getApplicationContext()); } else { mUserToView = PrimaryUser.getInstance(); } setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_view_profile, container, false); } /** * To be called when the "browse inventory" button is selected (from the view). * * Starts a new ViewInventoryActivity to browse mUserToView's inventory. * * @param v view from OnClickListener.onClick */ void onBrowseInventoryButtonSelected(View v) { Intent intent = new Intent(v.getContext(), ViewInventoryActivity.class); intent.putExtra("user", Parcels.wrap(mUserToView)); startActivity(intent); } /** * Callback after the model is loaded. (from View) * * RUN ME on the UI Thread! * * Populates the view Text fields, as well as sets up the * Browse Inventory button to view the correct user's inventory. */ void populateFields() { browseInventoryButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { onBrowseInventoryButtonSelected(v); } }); model.addObserver(this); update(model); } /** * {@inheritDoc} */ @Override public void onViewCreated(View view, Bundle savedInstanceState) { usernameView = (TextView) getView().findViewById(R.id.viewProfileUsername); emailView = (TextView) getView().findViewById(R.id.viewProfileEmail); phoneView = (TextView) getView().findViewById(R.id.viewProfilePhone); cityView = (TextView) getView().findViewById(R.id.viewProfileCity); browseInventoryButton = (Button) getView().findViewById(R.id.inventoryButton); AsyncTask<Void, Integer, UserProfile> t = new AsyncTask<Void, Integer, UserProfile>() { @Override protected UserProfile doInBackground(Void[] params) { //TODO is there a better way to do this? if (!PrimaryUser.getInstance().equals(mUserToView)) { mUserToView = new User(mUserToView.getUsername(), getContext()); } else { mUserToView = PrimaryUser.getInstance(); } try { model = mUserToView.getProfile(); } catch (IOException e) { //TODO this is garbage. e.printStackTrace(); } catch (ServiceNotAvailableException e) { throw new RuntimeException("App is offline.", e); } return model; } @Override protected void onPostExecute(UserProfile userProfile) { populateFields(); } }; t.execute(); } /** * {@inheritDoc} */ @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.edit_profile_button: Intent intent = new Intent(getActivity(), EditProfileActivity.class); startActivity(intent); return true; default: return super.onOptionsItemSelected(item); } } /** * {@inheritDoc} */ @Override public void onDetach() { if (model != null) { model.removeObserver(this); } super.onDetach(); } /** * {@inheritDoc} */ @Override public void update(Observable observable) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { String city = model.getCity(); String email = model.getEmail(); String phone = model.getPhone(); String username = mUserToView.getUsername(); cityView.setText(city); emailView.setText(email); phoneView.setText(phone); usernameView.setText(username); } }); } }