抱歉我的英文(谷歌翻译)。 我试图在Kotlin上使用klaxon(https://github.com/cbeust/klaxon)从答案google方向获得两点之间的距离。
fun distanceDier (start: LatLng, end: LatLng, mode: String) {
val url = ("http://maps.googleapis.com/maps/api/directions/json?"
+ "origin=" + start.latitude + "," + start.longitude
+ "&destination=" + end.latitude + "," + end.longitude
+ "&sensor=false&units=metric&mode=" + mode)
val result = URL("$url").readText()
val parser: Parser = Parser()
val stringBuilder: StringBuilder = StringBuilder(result)
val json: JsonObject = parser.parse(stringBuilder) as JsonObject
println("distance : ${json.string("routes.legs.distance.text")},")
println("$url") //test
设定点
distanceDier(LatLng(53.402971, 91.083748),LatLng(53.529799, 91.410684),"TravelMode")
日志:
FATAL EXCEPTION: main
Process: ru.kbais.coal4, PID: 4494
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { (has extras) }} to activity {ru.kbais.coal4/ru.kbais.coal4.MainActivity}: android.os.NetworkOnMainThreadException
发生错误
val result = URL("$url").readText()
如何获取Json文件的距离以及错误代码是什么?
答案 0 :(得分:0)
fun distanceDier (start: LatLng, end: LatLng, mode: String) {
val url = ("http://maps.googleapis.com/maps/api/directions/json?"
+ "origin=" + start.latitude + "," + start.longitude
+ "&destination=" + end.latitude + "," + end.longitude
+ "&sensor=false&units=metric&mode=" + mode)
//val result = URL(url).readText()
//an extension over string (support GET, PUT, POST, DELETE with httpGet(), httpPut(), httpPost(), httpDelete())
url.httpGet().responseString { request, response, result ->
//do something with response
when (result) {
is Result.Failure -> {
}
is Result.Success -> {
val res = result.value
println("Result: $result")
val parser: Parser = Parser()
val stringBuilder: StringBuilder = StringBuilder(res)
val json: JsonObject = parser.parse(stringBuilder) as JsonObject
println("distance : ${json.lookup<String?>("routes.legs.distance.text")},")
}
}
}
}