获得当前位置

wang_peng1

MyLocation myLocation = new MyLocation(); 
private void locationClick() { 
    myLocation.getLocation(this, locationResult)); 
} 
 
public LocationResult locationResult = new LocationResult(){ 
    @Override 
    public void gotLocation(final Location location){ 
        //Got the location! 
        }); 
    } 
}; 
import java.util.Timer; 
import java.util.TimerTask; 
import android.content.Context; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
 
public class MyLocation { 
    Timer timer1; 
    LocationManager lm; 
    LocationResult locationResult; 
    boolean gps_enabled=false; 
    boolean network_enabled=false; 
 
    public boolean getLocation(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) 
            return false; 
 
        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.NETWORK_PROVIDER); 
             if(network_enabled) 
                 net_loc=lm.getLastKnownLocation(LocationManager.GPS_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); 
    } 
}