项目中利用原生api获取经纬度笔记

private void getLocation() {
  System.out.println("-!!!!!!--!!!!!------");
  TelephonyManager tm = (TelephonyManager) MyApplication.getContext().getSystemService(Context.TELEPHONY_SERVICE);
  //1.获取位置管理器
  lm = (LocationManager) MyApplication.getContext().getSystemService(Context.LOCATION_SERVICE);
  //2.获取位置提供器，GPS或是NetWork
  List providers = lm.getProviders(true);
  if (providers.contains(LocationManager.GPS_PROVIDER)) {
    //如果是GPS定位
    locationProvider = LocationManager.GPS_PROVIDER;
    System.out.println("gps");
  } else if (providers.contains(LocationManager.NETWORK_PROVIDER) && (isNetworkAvailable(MyApplication.getContext()) || isWifiEnabled(MyApplication.getContext()))) {
    //如果是网络定位
    locationProvider = LocationManager.NETWORK_PROVIDER;
    System.out.println("network");
  } else {
    //没有可用的位置提供器
    System.out.println("No provider");
    return;
  }
  if (Build.VERSION.SDK_INT >= 23 &&
    ActivityCompat.checkSelfPermission(MyApplication.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
    ActivityCompat.checkSelfPermission(MyApplication.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    return;
  }
  if (ActivityCompat.checkSelfPermission(MyApplication.getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MyApplication.getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    return;
  }
  //3.获取上次的位置，一般第一次运行，此值为null
  Location location = lm.getLastKnownLocation(locationProvider);
  if (location != null) {
    setLocation(location);
  }
  // 监视地理位置变化，第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
  lm.requestLocationUpdates(locationProvider, period, 0, locationListener);
}

谨记：getLastKnownLocation方法必须与requestLocationUpdates方法在一起使用，否则location 获取的点的经纬度是重复的。

 

源码：https://developer.android.google.cn/reference/android/location/LocationManager#requestLocationUpdates(java.lang.String,%20long,%20float,%20android.location.LocationListener)