package com.action.android_test; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.widget.TextView; public class MainActivity extends Activity { private Location location=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //获得位置服务的名称 String serviceName = this.LOCATION_SERVICE; //获得位置服务的管理对象 LocationManager locationManager = (LocationManager)getSystemService(serviceName); // 通过GPS获取定位的位置数据 location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER); updateToNewLocation(location);     /**服务管理对象的监听器*/     //参数1：定位的方式   参数2：监听更新间隔时间(ms)  参数3：监听更新的距离(m) 参数4：监听的方法     locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER, 2000, 10, new LocationListener() {         public void onStatusChanged(String provider, int status, Bundle extras) {         }         public void onProviderEnabled(String provider) {         }         public void onProviderDisabled(String provider) {         }         public void onLocationChanged(Location location) {             updateToNewLocation(location);         }     }); } private void updateToNewLocation(Location location) {     TextView tv1;     tv1 = (TextView) this.findViewById(R.id.tv1);     if (location != null) {         double  latitude = location.getLatitude();         double longitude= location.getLongitude();         tv1.setText("经纬度为：n"+"维度：" +  latitude+ "n经度" + longitude);     } else {         tv1.setText("无法获取地理信息");     } } @Override public boolean onCreateOptionsMenu(Menu menu) {     getMenuInflater().inflate(R.menu.main, menu);     return true; }