android - 谷歌地图方向api中位置(0.0,0.0)的标记
问题描述
我尝试做一个android应用程序,我正在尝试使用Google map Direction API在2个标记之间画线,当我尝试解码来自goole服务器的JSON中的折线点时,我在附近设置了一堆标记位置 0.0,0.0 就像我在下面的屏幕截图中一样
我的折线解码功能是
private fun decodePoly(polylineArrayList: ArrayList<String>): List<LatLng> {
val poly = ArrayList<LatLng>()
var index = 0
for (i in 0 until polylineArrayList.size-1) {
val encoded = polylineArrayList[i]
val len = encoded.length
var lat = 0
var lng = 0
while (index < len -1) {
var b: Int
var shift = 0
var result = 0
do {
b = encoded[index++].toInt() - 63
result = result or (b and 0x1f shl shift)
shift += 5
} while (b >= 0x20 )
val dlat = if (result and 1 != 0) (result shr 1).inv() else result shr 1
lat += dlat
shift = 0
result = 0
do {
b = encoded[index++].toInt() - 63
result = result or (b and 0x1f shl shift)
shift += 5
} while (b >= 0x20 )
val dlng = if (result and 1 != 0) (result shr 1).inv() else result shr 1
lng += dlng
val p = LatLng(lat.toDouble() / 1E5,
lng.toDouble() / 1E5)
poly.add(p)
}
}
return poly
}
这是我画线的代码(我在我的 asynck 任务中成功
private val options = PolylineOptions()
private val latLongB = LatLngBounds.Builder()
override fun onSuccess(googleDirectionData: GoogleDirectionData?) {
val polylineArrayList = ArrayList<String>()
for (route in googleDirectionData?.routes!!) {
for (leg in route.legs) {
for (step in leg.steps)
polylineArrayList.add(step.polyline.points)
}
}
val polypts = decodePoly(polylineArrayList)
for (point in polypts) {
options.add(point)
latLongB.include(point)
}
val caisseMarker = LatLng(caisse.wsg84[0], caisse.wsg84[1])
options.add(caisseMarker)
latLongB.include(caisseMarker)
val bounds = latLongB.build()
// add polyline to the map
map.addPolyline(options)
// show map with route centered
map.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 100))
}
有人知道如何解决这个问题以便不再有一个标记来定位 0.0,0.0 吗?