当用户在家或办公室时如何获得通知

Question

我是 android 的新人，我将开发一个小应用程序，如果用户的位置在他的办公室，他会收到 "Welcome to Office" 的通知，如果他的位置在他家，也会收到通知是他的家。请告诉我我应该怎么做才能做到这一点。

Answer 1

为此你应该使用 GPS 你必须设置关于位置的通知。但是请确保您应该为用户提供选项以保存办公室和家庭的位置或您想要保存的任何其他内容

希望对您有所帮助

Answer 2

使用下面的代码

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;

import com.gs.mobile.Constants;
import com.gs.mobile.R;

public class MyLocation {
    private Timer timer1;
    private LocationManager lm;
    private LocationResult locationResult;
    private boolean gps_enabled=false;
    private boolean network_enabled=false;
    private AlertDialog.Builder dialog;

    public boolean getLocation(final Context context, LocationResult result){
        //I use LocationResult callback class to pass location value from MyLocation to user code.
        locationResult=result;
        if(lm==null)
            lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

        //exceptions will be thrown if provider is not permitted.
        try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
        try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}

        //don't start listeners if no provider is enabled
        if(!gps_enabled && !network_enabled){
            dialog = new AlertDialog.Builder(context);
            dialog.setMessage(context.getResources().getString(R.string.gps_network_not_enabled));

            dialog.show();

        }
         if(gps_enabled)
            lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
        if(network_enabled)
            lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
        timer1=new Timer();
        timer1.schedule(new GetLastLocation(), 20000);
        return true;
    }

    LocationListener locationListenerGps = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerNetwork);
        }
        public void onProviderDisabled(String provider) {}
        public void onProviderEnabled(String provider) {}
        public void onStatusChanged(String provider, int status, Bundle extras) {}
    };

    LocationListener locationListenerNetwork = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerGps);
        }
        public void onProviderDisabled(String provider) {}
        public void onProviderEnabled(String provider) {}
        public void onStatusChanged(String provider, int status, Bundle extras) {}
    };

    class GetLastLocation extends TimerTask {
        @Override
        public void run() {
             lm.removeUpdates(locationListenerGps);
             lm.removeUpdates(locationListenerNetwork);

             Location net_loc=null, gps_loc=null;
             if(gps_enabled)
                 gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
             if(network_enabled)
                 net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

             //if there are both values use the latest one
             if(gps_loc!=null && net_loc!=null){
                 if(gps_loc.getTime()>net_loc.getTime())
                     locationResult.gotLocation(gps_loc);
                 else
                     locationResult.gotLocation(net_loc);
                 return;
             }

             if(gps_loc!=null){
                 locationResult.gotLocation(gps_loc);
                 return;
             }
             if(net_loc!=null){
                 locationResult.gotLocation(net_loc);
                 return;
             }
             locationResult.gotLocation(null);
        }
    }

    public static abstract class LocationResult{
        public abstract void gotLocation(Location location);
    }
}//MyLocation-class

从 activity 调用它如下所示

/* Used to Get Device GPS Location
     * <uses-permission android:name=�android.permission.ACCESS_FINE_LOCATION�>
     */
    public static LocationResult locationResult = new LocationResult(){

        @Override
        public void gotLocation(Location location) {
            // TODO Auto-generated method stub

        }
    };

    public static void getGPS(Activity _activity){
        MyLocation myLocation = new MyLocation();
        myLocation.getLocation(_activity, locationResult);

    }//getGPS()

    public static void getGPS(Activity _activity,LocationResult locationResult){
        MyLocation myLocation = new MyLocation();
        myLocation.getLocation(_activity, locationResult);

    }//getGPS()

每次 lat 和 lang 改变时您的 public void gotLocation(Location location) 方法将被调用，您可以在其中检查位置是否在您预期的范围内。

如果你愿意，甚至你可以利用 URL http://maps.googleapis.com/maps/api/geocode/xml?address=37.4188514,-122.0874526&sensor=true

您可以通过发送到此 google 服务来获取该纬度和语言的名称。

Answer 3

创建地理围栏 当用户进入该区域和退出区域时，地理围栏可以完美运行。为未决意图提供唯一 ID。

当用户在家或办公室时如何获得通知

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