我在這里沒有找到任何類似的東西，所以我提出了這個問題。如何像這樣向距離矩陣發送 GET 請求：
https://maps.googleapis.com/maps/api/distancematrix/json?origins=&destinations=&units=metric&key=
并獲取帶有結果的 JSON
我試過這個，但應用程式在使用時被殺死：
val url = URL("https://maps.googleapis.com/maps/api/distancematrix/json?origins=$origen&destinations=$destino&units=metric&key=KEY")
with(url.openConnection() as HttpURLConnection) {
setRequestProperty("Accept","application/json")
requestMethod = "GET"
println("\nSent 'GET' request to URL : $url; Response Code : $responseCode")
inputStream.bufferedReader().use {
it.lines().forEach { line ->
println(line)
}
}
}
非常感謝！
編輯 單擊自動完成時呼叫 myFunction 時的錯誤日志
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.x.y, PID: 7168
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1316088539, result=-1, data=Intent { (has extras) }} to activity {com.x.y/com.x.y.MainActivity}: android.os.NetworkOnMainThreadException
at android.app.ActivityThread.deliverResults(ActivityThread.java:4901)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4942)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2069)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1565)
at com.android.org.conscrypt.Platform.blockGuardOnNetwork(Platform.java:430)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.writeInternal(ConscryptEngineSocket.java:666)
at com.android.org.conscrypt.ConscryptEngineSocket$SSLOutputStream.access$200(ConscryptEngineSocket.java:625)
at com.android.org.conscrypt.ConscryptEngineSocket.drainOutgoingQueue(ConscryptEngineSocket.java:594)
at com.android.org.conscrypt.ConscryptEngineSocket.close(ConscryptEngineSocket.java:489)
at com.android.okhttp.internal.Util.closeQuietly(Util.java:91)
at com.android.okhttp.internal.http.StreamAllocation.deallocate(StreamAllocation.java:258)
at com.android.okhttp.internal.http.StreamAllocation.connectionFailed(StreamAllocation.java:295)
at com.android.okhttp.internal.http.HttpEngine.close(HttpEngine.java:469)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:513)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:106)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:30)
at com.x.MainActivity.myfunction(MainActivity.kt:127)
at com.x.y.MainActivity$onCreate$2.onPlaceSelected(MainActivity.kt:91)
at com.google.android.libraries.places.widget.AutocompleteSupportFragment.onActivityResult(com.google.android.libraries.places:places@@2.5.0:6)
at androidx.fragment.app.FragmentManager$9.onActivityResult(FragmentManager.java:2905)
at androidx.fragment.app.FragmentManager$9.onActivityResult(FragmentManager.java:2885)
at androidx.activity.result.ActivityResultRegistry.doDispatch(ActivityResultRegistry.java:392)
at androidx.activity.result.ActivityResultRegistry.dispatchResult(ActivityResultRegistry.java:351)
at androidx.activity.ComponentActivity.onActivityResult(ComponentActivity.java:647)
at androidx.fragment.app.FragmentActivity.onActivityResult(FragmentActivity.java:164)
at android.app.Activity.dispatchActivityResult(Activity.java:8125)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4894)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4942)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2069)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)
單擊自動完成時呼叫 myFunction 時出現錯誤日志
uj5u.com熱心網友回復：
解決了！如果有人需要，我會發布解決方案
val origen = "36.000001"
val destino = "120.000001"
val urlMap = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=$origen&destinations=$destino&units=metric&key=YOUR_API_KEY"
val request = Request.Builder()
.url(urlMap)
.build()
client.newCall(request).enqueue(object : Callback {
override fun onFailure(call: Call, e: IOException) {
e.printStackTrace()
}
override fun onResponse(call: Call, response: Response) {
response.use {
if (!response.isSuccessful) throw IOException("Unexpected code $response")
var json = JSONObject(response.body!!.string())
val rows = json["rows"] as JSONArray
val elements = rows[0] as JSONObject
val distance = elements["elements"] as JSONArray
val distanceArray = distance[0] as JSONObject
val distanceData = distanceArray["distance"] as JSONObject
val dist = distanceData["value"].toString().toDouble()
val distKm = (dist/1000)
if (distKm != null) {
val textview: TextView = findViewById(R.id.textview)
textview(Runnable { textview.setText(distKm.toString()) })
}
}
}
})
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