Case code for Android to implement mobile phone positioning

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/**
  * Mobile phone positioning program code
  * @author xuliugen
  */
public class MainActivity extends Activity {
  // Use location services  private LocationManager lm;
  private MyLocationListener listener;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    (savedInstanceState);
    setContentView(.activity_main);
    lm = (LocationManager) getSystemService(LOCATION_SERVICE);
    // How to get positioning    // List<String> provider = ();
    // for(String l: provider){
    // (l);
    // }
    listener = new MyLocationListener();
    // Register the listening location service    // Set conditions for location providers    Criteria criteria = new Criteria();
    (Criteria.ACCURACY_FINE);
    // Set parameters for refinement:    // (Criteria.ACCURACY_FINE);//Set to maximum accuracy    // (false);//No altitude information required    // (false);//No location information required    // (true);//Is payment allowed    // (Criteria.POWER_LOW);//Requirements for power    String proveder = (criteria, true);
    (proveder, 0, 0, listener);
  }
  @Override
  protected void onDestroy() {
    // TODO Auto-generated method stub
    ();
    // Cancel the listening location service    (listener);
    listener = null;
  }
  class MyLocationListener implements LocationListener {
    /**
      * Callback when the position changes
      */
    public void onLocationChanged(Location location) {
      String longitude = "longitude:" + ();
      String latitude = "latitude:" + ();
      String accuracy = "Accuracy:" + ();
      TextView textview = new TextView();
      (longitude + "\n" + latitude + "\n" + accuracy);
      setContentView(textview);
    }
    /**
      * Callback when the state changes, on-off; off-off
      */
    public void onStatusChanged(String provider, int status, Bundle extras) {
    }
    /**
      * Providers can use it in a certain location
      */
    public void onProviderEnabled(String provider) {
    }
    /**
      * Providers at a certain location are not allowed to use it
      */
    public void onProviderDisabled(String provider) {
    }
  }
}