Java tutorial
/* * FlightIntel for Pilots * * Copyright 2012 Nadeem Hasan <nhasan@nadmm.com> * * This program 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 com.nadmm.airports.wx; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteQueryBuilder; import android.location.Location; import android.os.Bundle; import android.support.v4.content.LocalBroadcastManager; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import com.nadmm.airports.DatabaseManager; import com.nadmm.airports.DatabaseManager.Airports; import com.nadmm.airports.DatabaseManager.Awos1; import com.nadmm.airports.DatabaseManager.Wxs; import com.nadmm.airports.DrawerActivityBase; import com.nadmm.airports.FragmentBase; import com.nadmm.airports.R; import com.nadmm.airports.utils.CursorAsyncTask; import com.nadmm.airports.utils.FormatUtils; import com.nadmm.airports.utils.GeoUtils; import com.nadmm.airports.utils.TimeUtils; import com.nadmm.airports.wx.Pirep.Flags; import com.nadmm.airports.wx.Pirep.IcingCondition; import com.nadmm.airports.wx.Pirep.PirepEntry; import com.nadmm.airports.wx.Pirep.SkyCondition; import com.nadmm.airports.wx.Pirep.TurbulenceCondition; public class PirepFragment extends FragmentBase { private final String mAction = NoaaService.ACTION_GET_PIREP; private final int PIREP_RADIUS_NM = 50; private final int PIREP_HOURS_BEFORE = 3; private Location mLocation; private IntentFilter mFilter; private BroadcastReceiver mReceiver; private String mStationId; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); mFilter = new IntentFilter(); mFilter.addAction(mAction); mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(mAction)) { String type = intent.getStringExtra(NoaaService.TYPE); if (type.equals(NoaaService.TYPE_TEXT)) { showPirep(intent); } } } }; } @Override public void onResume() { LocalBroadcastManager bm = LocalBroadcastManager.getInstance(getActivity()); bm.registerReceiver(mReceiver, mFilter); Bundle args = getArguments(); String stationId = args.getString(NoaaService.STATION_ID); setBackgroundTask(new PirepDetailTask()).execute(stationId); super.onResume(); } @Override public void onPause() { LocalBroadcastManager bm = LocalBroadcastManager.getInstance(getActivity()); bm.unregisterReceiver(mReceiver); super.onPause(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.pirep_detail_view, container, false); Button btnGraphic = (Button) view.findViewById(R.id.btnViewGraphic); btnGraphic.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(getActivity(), PirepMapActivity.class); startActivity(intent); } }); return createContentView(view); } @Override public void onPrepareOptionsMenu(Menu menu) { DrawerActivityBase activity = (DrawerActivityBase) getActivity(); setRefreshItemVisible(!activity.isDrawerOpen()); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle item selection switch (item.getItemId()) { case R.id.menu_refresh: startRefreshAnimation(); requestPirep(true); return true; default: return super.onOptionsItemSelected(item); } } private final class PirepDetailTask extends CursorAsyncTask { @Override protected Cursor[] doInBackground(String... params) { String stationId = params[0]; Cursor[] cursors = new Cursor[2]; SQLiteDatabase db = getDbManager().getDatabase(DatabaseManager.DB_FADDS); SQLiteQueryBuilder builder = new SQLiteQueryBuilder(); builder.setTables(Wxs.TABLE_NAME); String selection = Wxs.STATION_ID + "=?"; Cursor c = builder.query(db, new String[] { "*" }, Wxs.STATION_ID + "=?", new String[] { stationId }, null, null, null, null); cursors[0] = c; String[] wxColumns = new String[] { Awos1.WX_SENSOR_IDENT, Awos1.WX_SENSOR_TYPE, Awos1.STATION_FREQUENCY, Awos1.SECOND_STATION_FREQUENCY, Awos1.STATION_PHONE_NUMBER, Airports.ASSOC_CITY, Airports.ASSOC_STATE }; builder = new SQLiteQueryBuilder(); builder.setTables(Airports.TABLE_NAME + " a" + " LEFT JOIN " + Awos1.TABLE_NAME + " w" + " ON a." + Airports.FAA_CODE + " = w." + Awos1.WX_SENSOR_IDENT); selection = "a." + Airports.ICAO_CODE + "=?"; c = builder.query(db, wxColumns, selection, new String[] { stationId }, null, null, null, null); cursors[1] = c; return cursors; } @Override protected boolean onResult(Cursor[] result) { Cursor wxs = result[0]; if (wxs == null || !wxs.moveToFirst()) { Bundle args = getArguments(); String stationId = args.getString(NoaaService.STATION_ID); String error = String.format("Unable to get station info for %s", stationId); showError(error); } else { mLocation = new Location(""); float lat = wxs.getFloat(wxs.getColumnIndex(Wxs.STATION_LATITUDE_DEGREES)); float lon = wxs.getFloat(wxs.getColumnIndex(Wxs.STATION_LONGITUDE_DEGREES)); mLocation.setLatitude(lat); mLocation.setLongitude(lon); // Now request the weather mStationId = wxs.getString(wxs.getColumnIndex(Wxs.STATION_ID)); requestPirep(false); } return true; } } protected void requestPirep(boolean refresh) { Intent service = new Intent(getActivity(), PirepService.class); service.setAction(mAction); service.putExtra(NoaaService.STATION_ID, mStationId); service.putExtra(NoaaService.TYPE, NoaaService.TYPE_TEXT); service.putExtra(PirepService.RADIUS_NM, PIREP_RADIUS_NM); service.putExtra(PirepService.HOURS_BEFORE, PIREP_HOURS_BEFORE); service.putExtra(PirepService.LOCATION, mLocation); service.putExtra(NoaaService.FORCE_REFRESH, refresh); getActivity().startService(service); } protected void showPirep(Intent intent) { Pirep pirep = (Pirep) intent.getSerializableExtra(NoaaService.RESULT); LinearLayout layout = (LinearLayout) findViewById(R.id.pirep_entries_layout); layout.removeAllViews(); if (!pirep.entries.isEmpty()) { TextView tv = (TextView) findViewById(R.id.pirep_title_msg); tv.setText(String.format("%d PIREPs reported within %d NM of %s during last %d hours", pirep.entries.size(), PIREP_RADIUS_NM, mStationId, PIREP_HOURS_BEFORE)); for (PirepEntry entry : pirep.entries) { showPirepEntry(layout, entry); } } else { TextView tv = (TextView) findViewById(R.id.pirep_title_msg); tv.setText(String.format("No PIREPs reported within %d NM of %s in last %d hours", PIREP_RADIUS_NM, mStationId, PIREP_HOURS_BEFORE)); } TextView tv = (TextView) findViewById(R.id.wx_fetch_time); tv.setText("Fetched on " + TimeUtils.formatDateTime(getActivity(), pirep.fetchTime)); tv.setVisibility(View.VISIBLE); stopRefreshAnimation(); setFragmentContentShown(true); } protected void showPirepEntry(LinearLayout layout, PirepEntry entry) { RelativeLayout item = (RelativeLayout) inflate(R.layout.pirep_detail_item); TextView tv = (TextView) item.findViewById(R.id.pirep_title); if (entry.flags.contains(Flags.BadLocation)) { String dir = GeoUtils.getCardinalDirection(entry.bearing); tv.setText(String.format("%.0f NM %s approx.", entry.distanceNM, dir)); } else if (entry.distanceNM > 0) { String dir = GeoUtils.getCardinalDirection(entry.bearing); tv.setText(String.format("%.0f NM %s", entry.distanceNM, dir)); } else { tv.setText(String.format("On Site")); } tv = (TextView) item.findViewById(R.id.pirep_title_extra); tv.setText(TimeUtils.formatElapsedTime(entry.observationTime)); tv = (TextView) item.findViewById(R.id.wx_raw_pirep); tv.setText(entry.rawText); LinearLayout details = (LinearLayout) item.findViewById(R.id.pirep_details); addRow(details, "Type", entry.reportType); addRow(details, "Aircraft", entry.aircraftRef); String time = TimeUtils.formatDateTime(getActivity(), entry.observationTime); addRow(details, "Time", time); if (entry.altitudeFeetMSL < Integer.MAX_VALUE) { if (entry.flags.contains(Flags.NoFlightLevel)) { addRow(details, "Altitude", FormatUtils.formatFeetMsl(entry.altitudeFeetMSL), "(Approximate)"); } else { addRow(details, "Altitude", FormatUtils.formatFeetMsl(entry.altitudeFeetMSL)); } } if (entry.visibilitySM < Integer.MAX_VALUE) { addRow(details, "Visibility", FormatUtils.formatStatuteMiles(entry.visibilitySM)); } if (entry.tempCelsius < Integer.MAX_VALUE) { addRow(details, "Temperature", FormatUtils.formatTemperature(entry.tempCelsius)); } if (entry.windSpeedKnots < Integer.MAX_VALUE) { addRow(details, "Winds", String.format("%s (true) at %d knots", FormatUtils.formatDegrees(entry.windDirDegrees), entry.windSpeedKnots)); } if (!entry.wxList.isEmpty()) { StringBuilder sb = new StringBuilder(); for (WxSymbol wx : entry.wxList) { if (sb.length() > 0) { sb.append(", "); } sb.append(wx.toString()); } addRow(details, "Weather", sb.toString()); } for (SkyCondition sky : entry.skyConditions) { addSkyConditionRow(details, sky); } for (TurbulenceCondition turbulence : entry.turbulenceConditions) { addTurbulenceRow(details, turbulence); } for (IcingCondition icing : entry.icingConditions) { addIcingRow(details, icing); } layout.addView(item, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); } protected void addSkyConditionRow(LinearLayout details, SkyCondition sky) { StringBuilder sb = new StringBuilder(); sb.append(FormatUtils.formatFeetRangeMsl(sky.baseFeetMSL, sky.topFeetMSL)); String extra = sb.toString(); addRow(details, "Sky cover", sky.skyCover, extra); } protected void addTurbulenceRow(LinearLayout details, TurbulenceCondition turbulence) { StringBuilder sb = new StringBuilder(); if (turbulence.frequency != null) { sb.append(turbulence.frequency); } if (turbulence.intensity != null) { if (sb.length() > 0) { sb.append(" "); } sb.append(turbulence.intensity); } if (turbulence.type != null) { if (sb.length() > 0) { sb.append(" "); } sb.append(turbulence.type); } String value = sb.toString(); sb.setLength(0); sb.append(FormatUtils.formatFeetRangeMsl(turbulence.baseFeetMSL, turbulence.topFeetMSL)); String extra = sb.toString(); addRow(details, "Turbulence", value, extra); } protected void addIcingRow(LinearLayout details, IcingCondition icing) { StringBuilder sb = new StringBuilder(); if (icing.intensity != null) { sb.append(icing.intensity); } if (icing.type != null) { if (sb.length() > 0) { sb.append(" "); } sb.append(icing.type); } String value = sb.toString(); sb.setLength(0); sb.append(FormatUtils.formatFeetRangeMsl(icing.baseFeetMSL, icing.topFeetMSL)); String extra = sb.toString(); addRow(details, "Icing", value, extra); } protected void showError(String error) { View detail = findViewById(R.id.wx_detail_layout); detail.setVisibility(View.GONE); LinearLayout layout = (LinearLayout) findViewById(R.id.wx_status_layout); layout.removeAllViews(); layout.setVisibility(View.GONE); TextView tv = (TextView) findViewById(R.id.status_msg); tv.setVisibility(View.VISIBLE); tv.setText(error); View title = findViewById(R.id.wx_title_layout); title.setVisibility(View.GONE); stopRefreshAnimation(); setContentShown(true); return; } }