planets.position.PlanetData.java Source code

Introduction

Here is the source code for planets.position.PlanetData.java

Source

package planets.position;

/*
 * Copyright (C) 2012 Tim Gaddis
 * 
 * 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/>.
 */

import java.util.Calendar;

import planets.position.data.PlanetsDbAdapter;
import planets.position.data.PlanetsDbProvider;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.text.format.DateFormat;
import android.widget.TextView;

public class PlanetData extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor> {

    private TextView planetName, raText, decText, azText, altText, disText, magText, setTimeText;
    private int planetNum;
    private Bundle bundle;

    private static final int PLANET_LOADER = 1;
    private String[] projection = { PlanetsDbAdapter.KEY_ROWID, "name", "ra", "dec", "az", "alt", "dis", "mag",
            "setT" };
    private ContentResolver cr;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.planet_data);

        planetName = (TextView) findViewById(R.id.info_name_text);
        raText = (TextView) findViewById(R.id.info_ra_text);
        decText = (TextView) findViewById(R.id.info_dec_text);
        azText = (TextView) findViewById(R.id.info_az_text);
        altText = (TextView) findViewById(R.id.info_alt_text);
        disText = (TextView) findViewById(R.id.info_dis_text);
        magText = (TextView) findViewById(R.id.info_mag_text);
        setTimeText = (TextView) findViewById(R.id.info_setTime_text);

        // load bundle from previous activity
        bundle = getIntent().getExtras();
        if (bundle != null) {
            planetNum = bundle.getInt("planetNum", 0);
        }
        cr = getApplicationContext().getContentResolver();
        getSupportLoaderManager().initLoader(PLANET_LOADER, null, this);

        fillData();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        setResult(RESULT_OK);
        finish();
    }

    private void fillData() {
        Calendar c = Calendar.getInstance();
        Cursor plCursor = cr.query(Uri.withAppendedPath(PlanetsDbProvider.PLANETS_URI, String.valueOf(planetNum)),
                projection, null, null, null);
        plCursor.moveToFirst();
        planetName.setText(plCursor.getString(plCursor.getColumnIndexOrThrow("name")));
        raText.setText(convertRaDec(plCursor.getDouble(plCursor.getColumnIndexOrThrow("ra")), 0));
        decText.setText(convertRaDec(plCursor.getDouble(plCursor.getColumnIndexOrThrow("dec")), 1));
        azText.setText(convertRaDec(plCursor.getDouble(plCursor.getColumnIndexOrThrow("az")), 3));
        altText.setText(convertRaDec(plCursor.getDouble(plCursor.getColumnIndexOrThrow("alt")), 3));
        disText.setText(convertRaDec(plCursor.getDouble(plCursor.getColumnIndexOrThrow("dis")), 2));
        magText.setText(plCursor.getString(plCursor.getColumnIndexOrThrow("mag")));
        c.setTimeInMillis(plCursor.getLong(plCursor.getColumnIndexOrThrow("setT")));
        setTimeText.setText(DateFormat.format("MMM dd h:mm aa", c));
    }

    private String convertRaDec(double value, int type) {
        double ra, dec, ras;
        int rah, ram, decd, decm, decs;
        char decSign;
        switch (type) {
        case 0:
            // RA value
            ra = value;
            // convert ra to hours
            ra = ra / 15;

            rah = (int) ra;
            ra -= rah;
            ra *= 60;
            ram = (int) ra;
            ra -= ram;
            ras = ra * 60;
            return String.format("%dh %dm %.1fs", rah, ram, ras);
        case 1:
            // Dec value
            dec = value;
            if (dec < 0) {
                decSign = '-';
                dec *= -1;
            } else {
                decSign = '+';
            }
            decd = (int) dec;
            dec -= decd;
            dec *= 60;
            decm = (int) dec;
            dec -= decm;
            dec *= 60;
            decs = (int) dec;
            return String.format("%c%d\u00b0 %d\' %d\"", decSign, decd, decm, decs);
        case 2:
            // Distance value
            return String.format("%.4f AU", value);
        case 3:
            // Az or Alt value
            return String.format("%.1f\u00b0", value);
        default:
            return "";
        }

    }

    // *** Loader Manager methods ***
    @Override
    public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
        CursorLoader cursorLoader = new CursorLoader(this, PlanetsDbProvider.PLANETS_URI, projection, null, null,
                null);
        return cursorLoader;
    }

    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {
    }

    @Override
    public void onLoadFinished(Loader<Cursor> arg0, Cursor data) {
    }
}