Android中实现GPS定位的简单例子

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>

private void openGPSSettings() {
    LocationManager alm = (LocationManager) this
        .getSystemService(Context.LOCATION_SERVICE);
    if (alm
        .isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
      Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT)
          .show();
      return;
    }

    Toast.makeText(this, "请开启GPS！", Toast.LENGTH_SHORT).show();
    Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
    startActivityForResult(intent,0); //此为设置完成后返回到获取界面

  }

private void getLocation()
  {
    // 获取位置管理服务
    LocationManager locationManager;
    String serviceName = Context.LOCATION_SERVICE;
    locationManager = (LocationManager) this.getSystemService(serviceName);
    // 查找到服务信息
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_FINE); // 高精度
    criteria.setAltitudeRequired(false);
    criteria.setBearingRequired(false);
    criteria.setCostAllowed(true);
    criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗

    String provider = locationManager.getBestProvider(criteria, true); // 获取GPS信息
    Location location = locationManager.getLastKnownLocation(provider); // 通过GPS获取位置
    updateToNewLocation(location);
    // 设置监听器，自动更新的最小时间为间隔N秒(1秒为1*1000，这样写主要为了方便)或最小位移变化超过N米
    locationManager.requestLocationUpdates(provider, 100 * 1000, 500,
        locationListener);  }

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("纬度：" + latitude+ "\n经度" + longitude);
    } else {
      tv1.setText("无法获取地理信息");
    }

  }