Android 科特林-我无法获得与谷歌地图相同的距离精度

我在我的应用程序中使用Google Places api计算两个地址之间的距离， 问题是我得到的距离比谷歌地图少

我无法获得与谷歌地图相同的准确度， 大多数时间距离比谷歌地图的结果要短

private fun SetupPlacesAutocompleteFun() {
    val _autocompletFragment1 = supportFragmentManager
        .findFragmentById(R.id.fragmentPlaces1) as AutocompleteSupportFragment
    _autocompletFragment1.setPlaceFields(_placesFields)
    _autocompletFragment1.setOnPlaceSelectedListener(object:PlaceSelectionListener{
        override fun onPlaceSelected(p1: Place) {
            _adrees1 = p1.latLng!!
            _adressString1 = p1.address!!
        }
        override fun onError(p1: Status) {
            Toast.makeText(this@GooglePlaces_Activity,"status "+p1.statusMessage,Toast.LENGTH_LONG).show()
        }
    })
    val _autocompletFragment2 = supportFragmentManager
        .findFragmentById(R.id.fragmentPlaces2) as AutocompleteSupportFragment
    _autocompletFragment2.setPlaceFields(_placesFields)
    _autocompletFragment2.setOnPlaceSelectedListener(object :PlaceSelectionListener{
        override fun onPlaceSelected(p2: Place) {
            _adress2 =p2.latLng!!
            _adressString2 = p2.address!!
        }

        override fun onError(p2: Status) {
            Toast.makeText(this@GooglePlaces_Activity,"status "+p2.statusMessage,Toast.LENGTH_LONG).show()
        }
    })
}

private fun InitPlacesFun() {
    Places.initialize(this,getString(R.string.Places_api))
    _placcesClint = Places.createClient(this)
}

我也试过：

var _Lat1 = _adrees1.latitude
var _Lat2 = _adress2.latitude
var _Long1 = _adrees1.longitude
var _Long2 = _adress2.longitude
var _LatRes = _Lat1 - _Lat2
var _longRes = _Long1 - _Long2

var R = 6371000f; // Radius of the earth in m
var dLat = _LatRes * Math.PI / 180f;
var dLon = _longRes * Math.PI / 180f;
var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
        Math.cos(_Lat1 * Math.PI / 180f) * Math.cos(_Lat2 * Math.PI / 180f) *
        Math.sin(dLon/2) * Math.sin(dLon/2);
var c = 2f * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
 dist = R* c

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因为计算的是径向距离，而不是实际的管线距离，所以距离会变小

尝试使用google directions API计算距离

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您可以在图像中看到径向距离（橙色）和实际距离（蓝色）之间的差异

使用方向api计算两个位置之间的距离，即源位置和目标位置，与谷歌地图完全相同..我会尝试，谢谢我会尝试，谢谢

var _Lat1 = _adrees1.latitude
var _Lat2 = _adress2.latitude
var _Long1 = _adrees1.longitude
var _Long2 = _adress2.longitude
var _LatRes = _Lat1 - _Lat2
var _longRes = _Long1 - _Long2

var R = 6371000f; // Radius of the earth in m
var dLat = _LatRes * Math.PI / 180f;
var dLon = _longRes * Math.PI / 180f;
var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
        Math.cos(_Lat1 * Math.PI / 180f) * Math.cos(_Lat2 * Math.PI / 180f) *
        Math.sin(dLon/2) * Math.sin(dLon/2);
var c = 2f * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
 dist = R* c