Java tutorial
/* * Copyright (c) 2013 Joakim Lindskog * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.limewoodmedia.nsdroid.fragments; import java.io.IOException; import java.util.ArrayList; import java.util.List; import com.limewoodMedia.nsapi.exceptions.RateLimitReachedException; import com.limewoodMedia.nsapi.exceptions.UnknownRegionException; import com.limewoodMedia.nsapi.holders.Embassy; import com.limewoodMedia.nsapi.holders.Embassy.EmbassyStatus; import com.limewoodMedia.nsapi.holders.RegionData; import com.limewoodmedia.nsdroid.R; import com.limewoodmedia.nsdroid.API; import com.limewoodmedia.nsdroid.LoadingHelper; import com.limewoodmedia.nsdroid.TagParser; import com.limewoodmedia.nsdroid.activities.Region; import com.limewoodmedia.nsdroid.views.LoadingView; import android.content.Context; import android.content.Intent; import android.content.res.Resources; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.Html; import android.text.method.LinkMovementMethod; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; import org.xmlpull.v1.XmlPullParserException; public class EmbassiesFragment extends Fragment implements OnClickListener, OnItemSelectedListener { private static final String TAG = EmbassiesFragment.class.getName(); private View root; private ListView list; private LoadingView loadingView; private List<Embassy> embassies; private List<Embassy> embassiesCopy; private ArrayAdapter<Embassy> listAdapter; private Context context; private String errorMessage; private String region; private RegionData data; public EmbassiesFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); context = getActivity(); } @Override public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { root = inflater.inflate(R.layout.embassies, null, false); list = (ListView) root.findViewById(R.id.embassies_list); embassies = new ArrayList<Embassy>(); listAdapter = new ArrayAdapter<Embassy>(context, 0, embassies) { @Override public View getView(int position, View convertView, ViewGroup parent) { View view; TextView name, status; Embassy embassy; if (convertView == null) { view = inflater.inflate(R.layout.embassy, null); name = (TextView) view.findViewById(R.id.embassy_name); name.setMovementMethod(LinkMovementMethod.getInstance()); status = (TextView) view.findViewById(R.id.embassy_status); } else { view = convertView; name = (TextView) view.findViewById(R.id.embassy_name); status = (TextView) view.findViewById(R.id.embassy_status); } embassy = getItem(position); // Region String eName = TagParser.idToName(embassy.region); name.setText(Html.fromHtml(eName)); // Status String str = null; Resources res = getResources(); int background = R.drawable.embassy_established; switch (embassy.status) { case INVITED: str = res.getString(R.string.embassy_invited); background = R.drawable.embassy_invited; break; case PENDING: str = res.getString(R.string.embassy_pending); background = R.drawable.embassy_pending; break; case REQUESTED: str = res.getString(R.string.embassy_requested); background = R.drawable.embassy_requested; break; case REJECTED: str = res.getString(R.string.embassy_rejected); background = R.drawable.embassy_denied; break; case CLOSING: str = res.getString(R.string.embassy_closing); background = R.drawable.embassy_closing; break; case ESTABLISHED: break; } status.setText(str); view.setBackgroundResource(background); view.setTag(embassy); view.setOnClickListener(EmbassiesFragment.this); name.setOnClickListener(EmbassiesFragment.this); status.setOnClickListener(EmbassiesFragment.this); return view; } }; list.setAdapter(listAdapter); ((Spinner) root.findViewById(R.id.embassies_filter)).setOnItemSelectedListener(this); return root; } public void setRegionName(String name) { region = name; } public void setEmbassies(List<Embassy> embassies) { if (embassies != null) { if (this.embassies.size() > 0) { this.embassies.clear(); } this.embassies.addAll(embassies); this.embassiesCopy = embassies; this.listAdapter.notifyDataSetChanged(); } list.setVisibility(View.VISIBLE); LoadingHelper.stopLoading(loadingView); } public void onBeforeLoad() { this.embassies.clear(); startLoading(R.string.loading_embassies); } private void startLoading(int res) { if (loadingView == null) { loadingView = (LoadingView) root.findViewById(R.id.loading); } list.setVisibility(View.GONE); LoadingHelper.startLoading(loadingView, res, getActivity()); } public void updateEmbassies() { this.embassies.clear(); startLoading(R.string.loading_embassies); errorMessage = getResources().getString(R.string.general_error); new AsyncTask<Void, Void, Boolean>() { protected Boolean doInBackground(Void... params) { try { data = API.getInstance(context).getRegionInfo(region, RegionData.Shards.NAME, RegionData.Shards.EMBASSIES); return true; } catch (RateLimitReachedException e) { e.printStackTrace(); errorMessage = getResources().getString(R.string.rate_limit_reached); } catch (UnknownRegionException e) { e.printStackTrace(); errorMessage = getResources().getString(R.string.unknown_region, e.getRegion()); } catch (RuntimeException e) { e.printStackTrace(); errorMessage = e.getMessage(); } catch (XmlPullParserException e) { e.printStackTrace(); errorMessage = getResources().getString(R.string.xml_parser_exception); } catch (IOException e) { e.printStackTrace(); errorMessage = getResources().getString(R.string.api_io_exception); } return false; }; protected void onPostExecute(Boolean result) { LoadingHelper.stopLoading(loadingView); if (result) { setEmbassies(data.embassies); } else { Toast.makeText(context, errorMessage, Toast.LENGTH_SHORT).show(); } }; }.execute(); } @Override public void onClick(View v) { // Go to region Embassy e = (Embassy) v.getTag(); if (e == null) { e = (Embassy) ((ViewGroup) v.getParent()).getTag(); } if (e != null) { Intent i = new Intent(getActivity(), Region.class); i.setData(Uri.parse("com.limewoodMedia.nsdroid.region://" + e.region.replace(' ', '_'))); getActivity().startActivity(i); } } @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { if (embassiesCopy == null) { return; } List<Embassy> embassies = new ArrayList<Embassy>(); EmbassyStatus status = null; switch (position) { case 0: // All this.embassies.clear(); this.embassies.addAll(embassiesCopy); this.listAdapter.notifyDataSetChanged(); return; case 1: // Changes status = null; break; case 2: // Established status = EmbassyStatus.ESTABLISHED; break; case 3: // Invited status = EmbassyStatus.INVITED; break; case 4: // Pending status = EmbassyStatus.PENDING; break; case 5: // Requested status = EmbassyStatus.REQUESTED; break; case 6: // Denied status = EmbassyStatus.REJECTED; break; case 7: // Closing status = EmbassyStatus.CLOSING; break; } for (Embassy em : this.embassiesCopy) { if (status == null && em.status != EmbassyStatus.ESTABLISHED) { embassies.add(em); } else if (em.status == status) { embassies.add(em); } } this.embassies.clear(); this.embassies.addAll(embassies); this.listAdapter.notifyDataSetChanged(); } @Override public void onNothingSelected(AdapterView<?> parent) { } }