android获得日升日落时间

本文介绍如何在Android应用中获取日出和日落时间,关键在于使用特定的服务,并确保在manifest文件中正确注册和启动该服务。

获得日升日落时间的关键代码就是下面这个服务,当然要去manifest里注册和启动这个服务

package com.android.options;
import android.app.Service;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.content.SharedPreferences; 
import android.media.AudioManager; 
import android.os.IBinder;

import android.app.CanBusManager;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.provider.Settings;
import android.util.Log;
import android.widget.Toast;
 
import android.os.Bundle;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationUtils;
import android.location.ChinaLocation;
import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;


public class BacklightService extends Service {
	
	private static double mLatitude = -1;
	private static double mLongitude = -1;
	private final static String TAG = "BacklightService";
	private Context mContext;
    public static final String ACTION_UPDATE_BACKLIGHT_MODE = "android.intent.action.update.backlightmode";
	
	@Override
	public void onCreate() {
		super.onCreate();
		mContext = this;
Log.d(TAG, "year=");
saveSunSetAanSunRiseTime();
		 LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
	        if (locationManager != null) {
	        	Log.d(TAG, "locationManager");
	            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 500, mlocationListener);
	        }	
	}
	
	@Override
	@Deprecated
	public IBinder onBind(Intent arg0) {

		// 生命期与系统一致,不需要绑定到某个activity
		return null;
	}
	
	@Override
	public void onDestroy() {

		super.onDestroy();
		//locationManager.removeUpdates(mlocationListener);
	}
	
	private void saveSunSetAanSunRiseTime() {
        Calendar today = Calendar.getInstance();
        int year = 2013;
        int month = 0;
        int day = 16;
            double mLatitude = 31.308928833333333;
            double mLongitude = 121.54332716666667;
Log.d(TAG, "year=" + year + "  month=" + month);
        SunRisesAndSetsTime sun = new SunRisesAndSetsTime();
        
        if (year > 2000 && mLatitude != -1 && mLongitude != -1) {
            sun.setDate(year, month + 1, day);
            double mlat = 31.308928833333333;
            double mlong = 121.54332716666667;
            Log.d(TAG, "start");
            sun.setLat(mlat);
            sun.setLong(mlong);
            sun.init();
            int[] time1 = sun.getRiseTime();
            int riseHour = time1[0];
            int riseMinute = time1[1];
            Log.d(TAG, "riseHour=" + riseHour + "  riseMinute=" + riseMinute);
            int[] time2 = sun.getSetTime();
            int setHour = time2[0];
            int setMinute = time2[1];
            Log.d(TAG, "setHour=" + setHour + "  setMinute=" + setMinute);

            if (riseHour >= 0 && riseHour <= 23)
                Settings.System.putInt(mContext.getContentResolver(), Settings.System.DAYTIME_HOUR, riseHour);
            if (riseMinute >= 0 && riseMinute <= 59)
                Settings.System.putInt(mContext.getContentResolver(), Settings.System.DAYTIME_MINUTES, riseMinute);
            if (setHour >= 0 && setHour <= 23)
                Settings.System.putInt(mContext.getContentResolver(), Settings.System.DARKNIGHT_HOUR, setHour);
            if (setMinute >= 0 && setMinute <= 59)
                Settings.System.putInt(mContext.getContentResolver(), Settings.System.DARKNIGHT_MINUTES, setMinute);

			Intent i = new Intent(ACTION_UPDATE_BACKLIGHT_MODE);
            mContext.sendBroadcast(i);
        }
    }
    private LocationListener mlocationListener = new LocationListener() {

        // Called when the location has changed.
        public void onLocationChanged(Location location) {
            // TODO Auto-generated method stub
            Log.d(TAG, "Location Changed : location = " + location.toString());

            if (location != null) {
                ChinaLocation china_lc = LocationUtils.wgtochina(location.getLongitude(), location.getLatitude());
                mLongitude = china_lc.china_lng;
                mLatitude = china_lc.china_lat;

                // more
                Log.d(TAG, "Location Changed : Latitude = " + mLatitude + ", Longitude = "
                        + mLongitude);

//                updateStat(mLatitude, mLongitude);
                saveSunSetAanSunRiseTime();
            }
        }

        // Called when the provider is disabled by the user.
        public void onProviderDisabled(String provider) {
            // TODO Auto-generated method stub
            Log.d(TAG, "Location provider is disabled by the user");
        }

        // Called when the provider is enabled by the user.
        public void onProviderEnabled(String provider) {
            // TODO Auto-generated method stub
            Log.d(TAG, "Location provider is disabled by the user");
        }

        // Called when the provider status changes.
        public void onStatusChanged(String provider, int status, Bundle extras) {
            // TODO Auto-generated method stub
            Log.d(TAG, "Location provider status changes; provider = " + provider + ", status = "
                    + status + ", extras =" + extras.toString());

        }
    };

    
   public class SunRisesAndSetsTime {
	private static final String TAG = "SunRisesAndSetsTime";
	private int days_of_month_1[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	private int days_of_month_2[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	private static final double h = -0.833;
	private static final double PI = 3.1415926;
	private int latDegree = 0;
	private int latDinute = 0;
	private int latSecond = 0;
	private double UTo = 180.0;

	private int longDegree = 0;
	private int longDinute = 0;
	private int longSecond = 0;

	private int year, month, date;

	public void setDate(int mYear, int mMonth, int mDate) {
		year = mYear;
		month = mMonth;
		date = mDate;
		Log.d(TAG, "year=" + year + " month=" + month + "  date=" + date);
	}

	public void setLat(double mLat) {
		Log.d(TAG, "setLat");
		latDegree = (int) mLat;
		double num1 = (mLat % 1) * 60;
		latDinute = (int) num1;
		double num2 = (num1 % 1) * 60;
		latSecond = (int) num2;
		Log.d(TAG, "latDegree=" + latDegree + " latDinute=" + latDinute + "  latSecond=" + latSecond);
	}

	public void setLong(double mLong) {
		Log.d(TAG, "setLong");
		longDegree = (int) mLong;
		double num1 = (mLong % 1) * 60;
		longDinute = (int) num1;
		double num2 = (num1 % 1) * 60;
		longSecond = (int) num2;
		Log.d(TAG, "longDegree=" + longDegree + " longDinute=" + longDinute + "  longSecond=" + longSecond);
	}

	boolean leap_year(int year) {
		if (((year % 400 == 0) || (year % 100 != 0) && (year % 4 == 0)))
			return true;
		else
			return false;
	}

	int days(int year, int month, int date) {
		int i, a = 0;
		for (i = 2000; i < year; i++) {
			if (leap_year(i))
				a = a + 366;
			else
				a = a + 365;
		}
		if (leap_year(year)) {
			for (i = 0; i < month - 1; i++) {
				a = a + days_of_month_2[i];
			}
		} else {
			for (i = 0; i < month - 1; i++) {
				a = a + days_of_month_1[i];
			}
		}
		a = a + date;
		return a;
	}

	double t_century(int days, double UTo) {
		return ((double) days + UTo / 360) / 36525;
	}

	double L_sun(double t_century) {
		return (280.460 + 36000.770 * t_century);
	}

	double G_sun(double t_century) {
		return (357.528 + 35999.050 * t_century);
	}

	double ecliptic_longitude(double L_sun, double G_sun) {
		return (L_sun + 1.915 * Math.sin(G_sun * PI / 180) + 0.02 * Math.sin(2 * G_sun * PI / 180));
	}

	double earth_tilt(double t_century) {
		return (23.4393 - 0.0130 * t_century);
	}

	double sun_deviation(double earth_tilt, double ecliptic_longitude) {
		return (180 / PI * Math.asin(Math.sin(PI / 180 * earth_tilt) * Math.sin(PI / 180 * ecliptic_longitude)));
	}

	double GHA(double UTo, double G_sun, double ecliptic_longitude) {
		return (UTo - 180 - 1.915 * Math.sin(G_sun * PI / 180) - 0.02 * Math.sin(2 * G_sun * PI / 180) + 2.466
				* Math.sin(2 * ecliptic_longitude * PI / 180) - 0.053 * Math.sin(4 * ecliptic_longitude * PI / 180));
	}

	double e(double h, double glat, double sun_deviation) {
		return 180
				/ PI
				* Math.acos((Math.sin(h * PI / 180) - Math.sin(glat * PI / 180) * Math.sin(sun_deviation * PI / 180))
						/ (Math.cos(glat * PI / 180) * Math.cos(sun_deviation * PI / 180)));
	}

	double UT_rise(double UTo, double GHA, double glong, double e) {
		return (UTo - (GHA + glong + e));
	}

	double UT_set(double UTo, double GHA, double glong, double e) {
		return (UTo - (GHA + glong - e));
	}

	double result_rise(double UT, double UTo, double glong, double glat, int year, int month, int date) {
		double d;
		if (UT >= UTo)
			d = UT - UTo;
		else
			d = UTo - UT;
		if (d >= 0.1) {
			UTo = UT;
			UT = UT_rise(
					UTo,
					GHA(UTo,
							G_sun(t_century(days(year, month, date), UTo)),
							ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
									G_sun(t_century(days(year, month, date), UTo)))),
					glong,
					e(h,
							glat,
							sun_deviation(
									earth_tilt(t_century(days(year, month, date), UTo)),
									ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
											G_sun(t_century(days(year, month, date), UTo))))));
			result_rise(UT, UTo, glong, glat, year, month, date);
		}
		return UT;
	}


	double result_set(double UT, double UTo, double glong, double glat, int year, int month, int date) {
		double d;
		if (UT >= UTo)
			d = UT - UTo;
		else
			d = UTo - UT;
		if (d >= 0.1) {
			UTo = UT;
			UT = UT_set(
					UTo,
					GHA(UTo,
							G_sun(t_century(days(year, month, date), UTo)),
							ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
									G_sun(t_century(days(year, month, date), UTo)))),
					glong,
					e(h,
							glat,
							sun_deviation(
									earth_tilt(t_century(days(year, month, date), UTo)),
									ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
											G_sun(t_century(days(year, month, date), UTo))))));
			result_set(UT, UTo, glong, glat, year, month, date);
		}
		return UT;
	}

	int Zone(double glong) {
		if (glong >= 0)
			return (int) ((int) (glong / 15.0) + 1);
		else
			return (int) ((int) (glong / 15.0) - 1);
	}

	private double glat, glong;
	private double rise, set;

	public void init() {
		Log.d(TAG, "init");

		glat = latDegree + latDinute / 60 + latSecond / 3600;
		// dd.input_glong(c);
		// c = new int[] { 118, 74, 0234 };
		glong = longDegree + longDinute / 60 + longSecond / 3600;

		rise = result_rise(
				UT_rise(UTo,
						GHA(UTo,
								G_sun(t_century(days(year, month, date), UTo)),
								ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
										G_sun(t_century(days(year, month, date), UTo)))),
						glong,
						e(h,
								glat,
								sun_deviation(
										earth_tilt(t_century(days(year, month, date), UTo)),
										ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
												G_sun(t_century(days(year, month, date), UTo)))))), UTo, glong, glat,
				year, month, date);
		set = result_set(
				UT_set(UTo,
						GHA(UTo,
								G_sun(t_century(days(year, month, date), UTo)),
								ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
										G_sun(t_century(days(year, month, date), UTo)))),
						glong,
						e(h,
								glat,
								sun_deviation(
										earth_tilt(t_century(days(year, month, date), UTo)),
										ecliptic_longitude(L_sun(t_century(days(year, month, date), UTo)),
												G_sun(t_century(days(year, month, date), UTo)))))), UTo, glong, glat,
				year, month, date);
	}

	public int[] getRiseTime() {
		// double times = 0;
		int[] times = new int[2];

		times[0] = (int) (rise / 15 + Zone(glong));
		times[1] = (int) (60 * (rise / 15 + Zone(glong) - (int) (rise / 15 + Zone(glong))));

		return times;
	}

	public int[] getSetTime() {
		int[] times = new int[2];

		times[0] = (int) (set / 15 + Zone(glong));
		times[1] = (int) (60 * (set / 15 + Zone(glong) - (int) (set / 15 + Zone(glong))));

		return times;
	}

  }

	
}




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