package com.example.getlocation;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.os.Handler;import android.app.Activity;import android.content.Context;import android.util.Log;import android.widget.TextView;public class MainActivity extends Activity{   private double latitude=0.0;   private double longitude =0.0;   LocationManager locationManager =null ;   @Override   protected void onCreate(Bundle savedInstanceState)   {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);      final TextView showText = (TextView)findViewById(R.id.show_text);      locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);             LocationListener locationListener = new LocationListener() {                        // Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数            @Override            public void onStatusChanged(String provider, int status, Bundle extras) {                           }                        // Provider被enable时触发此函数，比如GPS被打开            @Override            public void onProviderEnabled(String provider) {               Log.e("Map", "onProviderEnabled "  );            }                        // Provider被disable时触发此函数，比如GPS被关闭             @Override            public void onProviderDisabled(String provider) {                           }                        //当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发             @Override            public void onLocationChanged(Location location) {               if (location != null)                {                     Log.e("Map", "Location changed : Lat: "                    + location.getLatitude() + " Lng: "                    + location.getLongitude());                     showText.setText("Latitude:"+ location.getLatitude() +"Longitude"+location.getLongitude());                   stopLister(this);               }            }         };                  if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER))         {            //第一个参数，与取            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000, 0,locationListener);            }         else         {            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,1000, 0,locationListener);          }           //取上一次定位的位置//       Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);   //       if(location != null){   //          latitude = location.getLatitude(); //经度   //          longitude = location.getLongitude(); //纬度//          //          Log.e("Map", "NETWORK_PROVIDER changed : Lat: "  //          + location.getLatitude() + " Lng: "  //          + location.getLongitude());   //       }            }   /**    * 销毁定位    */   private void stopLister(LocationListener listener) {      if (locationManager != null) {         locationManager.removeUpdates(listener);      }      locationManager = null;   }}