如果我上传文件＆＃34; radioData.json＆＃34;到我的服务器www.mydomain.com/json/radioData.json。那么我可以使用我在这里的代码调用它，只需将URL转换为前一个代码吗？我问的原因是每当我做教程并从json数据中的API中提取它时，它永远不会有.json链接，所以这让我想知道我是否还必须做其他事情
谢谢！
这是我指的代码！
package com.dredaydesigns.radiostationfinder;
import android.R;
import android.app.Activity;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;
import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
public class MainActivity extends Activity implements GoogleApiClient.ConnectionCallbacks {
String longitude;
String latitude;
String HTTPRadioURL = "https://transition.fcc.gov/fcc-bin/fmq?state=&call=&city=&arn=&serv=FC&vac=3&freq=0.0&fre2=107.9&facid=&asrn=&class=&dkt=&list=0&dist=100&dlat2="
+ latitude + "&mlat2=&slat2=&NS=N&dlon2="
+ longitude +"&mlon2=&slon2=&EW=W&size=9";
public static final String TAG = MainActivity.class.getSimpleName();
private RadioData mRadioData;
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_content);
// latitude = (TextView) findViewById(R.id.latitudeLabel);
// longitude = (TextView) findViewById(R.id.longitudeLabel);
double latitude = 32;
double longitude = -96;
final RadioData[] mRadioData = new RadioData[1];
String radioFinderURL = "http://data.fcc.gov/lpfmapi/rest/v1/lat/" + latitude + "/long/" + longitude + "?format=json&secondchannel=true";
//String HTTPRadioURL = "https://transition.fcc.gov/fcc-bin/fmq?state=&call=&city=&arn=&serv=FC&vac=3&freq=0.0&fre2=107.9&facid=&asrn=&class=&dkt=&list=0&dist=100&dlat2="
// + latitude + "&mlat2=&slat2=&NS=N&dlon2="
// + longitude +"&mlon2=&slon2=&EW=W&size=9";
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(radioFinderURL)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(Response response) throws IOException {
try {
String jsonData = response.body().string();
Log.v(TAG,jsonData);
if (response.isSuccessful()) {
mRadioData[0] = getCurrentDetails(jsonData);
}
} catch (IOException e) {
Log.e(TAG, "Exception Caught: ", e);
}
catch(JSONException e){
Log.e(TAG, "Exception Caught:", e);
}
}
});
}
private RadioData getCurrentDetails(String jsonData) throws JSONException {
JSONObject radioData = new JSONObject(jsonData);
String callSign;
JSONArray jsonArray = radioData.getJSONArray("interferingAnalysis");
for(int i =0; i<jsonArray.length(); i++){
callSign = radioData.getJSONObject(i+"")
.getJSONArray("interferingChannels").getJSONObject(i).getString("callsign");
Log.i(TAG, "From JSON: " + callSign);
JSONObject currently = radioData.getJSONObject("frequency");
RadioData radioFinder = new RadioData();
}
return new RadioData();
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
.addApi(LocationServices.API)
.build();
}
@Override
public void onConnected(Bundle bundle) {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
// latitudeLabel.setText(String.valueOf(mLastLocation.getLatitude()));
//longitudeLabel.setText(String.valueOf(mLastLocation.getLongitude()));
}
}
@Override
public void onConnectionSuspended(int i) {
}
}
好的，我已经更新了文件并运行它，它似乎正在工作，因为它在我使用此代码时抓取了一些JSON数据。
String radioFinderURL = "http://dredaycreative.com/json/radioData.json";
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(radioFinderURL)
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(Response response) throws IOException {
try {
String jsonData = response.body().string();
Log.v(TAG,jsonData);
if (response.isSuccessful()) {
mRadioData[0] = getCurrentDetails(jsonData);
}
} catch (IOException e) {
Log.e(TAG, "Exception Caught: ", e);
}
catch(JSONException e){
Log.e(TAG, "Exception Caught:", e);
}
}
});
}
private RadioData getCurrentDetails(String jsonData) throws JSONException {
JSONObject radioData = new JSONObject(jsonData);
String callSign;
JSONArray jsonArray = radioData.getJSONArray("array");
for(int i =0; i<jsonArray.length(); i++){
callSign = radioData.getJSONObject(i+"")
.getJSONArray("array").getJSONObject(i).getString("FIELD1");
Log.i(TAG, "From JSON: " + callSign);
JSONObject currently = radioData.getJSONObject("frequency");
RadioData radioFinder = new RadioData();
}
return new RadioData();
我在logcat中得到了以下内容
08-15 15:48:40.868 7157-7157/com.dredaydesigns.radiostationfinder E/Zygote﹕ MountEmulatedStorage()
08-15 15:48:40.868 7157-7157/com.dredaydesigns.radiostationfinder E/Zygote﹕ v2
08-15 15:48:40.868 7157-7157/com.dredaydesigns.radiostationfinder I/libpersona﹕ KNOX_SDCARD checking this for 10230
08-15 15:48:40.868 7157-7157/com.dredaydesigns.radiostationfinder I/libpersona﹕ KNOX_SDCARD not a persona
08-15 15:48:40.908 7157-7157/com.dredaydesigns.radiostationfinder I/SELinux﹕ Function: selinux_compare_spd_ram, SPD-policy is existed. and_ver=SEPF_SM-G900T_5.0 ver=27
08-15 15:48:40.908 7157-7157/com.dredaydesigns.radiostationfinder I/SELinux﹕ Function: selinux_compare_spd_ram , priority [1] , priority version is VE=SEPF_SM-G900T_5.0_0027
08-15 15:48:40.908 7157-7157/com.dredaydesigns.radiostationfinder E/SELinux﹕ [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
08-15 15:48:40.908 7157-7157/com.dredaydesigns.radiostationfinder I/art﹕ Late-enabling -Xcheck:jni
08-15 15:48:40.938 7157-7157/com.dredaydesigns.radiostationfinder D/TimaKeyStoreProvider﹕ TimaSignature is unavailable
08-15 15:48:40.938 7157-7157/com.dredaydesigns.radiostationfinder D/ActivityThread﹕ Added TimaKeyStore provider
08-15 15:48:41.188 7157-7157/com.dredaydesigns.radiostationfinder D/ResourcesManager﹕ creating new AssetManager and set to /data/app/com.dredaydesigns.radiostationfinder-2/base.apk
08-15 15:48:41.598 7157-7157/com.dredaydesigns.radiostationfinder D/AbsListView﹕ Get MotionRecognitionManager
08-15 15:48:41.678 7157-7157/com.dredaydesigns.radiostationfinder D/Activity﹕ performCreate Call secproduct feature valuefalse
08-15 15:48:41.678 7157-7157/com.dredaydesigns.radiostationfinder D/Activity﹕ performCreate Call debug elastic valuetrue
08-15 15:48:41.768 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 61.842ms
08-15 15:48:41.848 7157-7226/com.dredaydesigns.radiostationfinder D/OpenGLRenderer﹕ Render dirty regions requested: true
08-15 15:48:41.958 7157-7226/com.dredaydesigns.radiostationfinder I/Adreno-EGL﹕ <qeglDrvAPI_eglInitialize:410>: EGL 1.4 QUALCOMM build: ()
OpenGL ES Shader Compiler Version: E031.25.01.03
Build Date: 10/28/14 Tue
Local Branch: LA.BF.1.1_RB1_20141028_021_patches2
Remote Branch:
Local Patches:
Reconstruct Branch:
08-15 15:48:41.958 7157-7226/com.dredaydesigns.radiostationfinder I/OpenGLRenderer﹕ Initialized EGL, version 1.4
08-15 15:48:42.048 7157-7226/com.dredaydesigns.radiostationfinder I/OpenGLRenderer﹕ HWUI protection enabled for context , &this =0xaf822088 ,&mEglDisplay = 1 , &mEglConfig = 8
08-15 15:48:42.048 7157-7226/com.dredaydesigns.radiostationfinder D/OpenGLRenderer﹕ Enabling debug mode 0
08-15 15:48:42.108 7157-7157/com.dredaydesigns.radiostationfinder I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@18fd5d03 time:80192569
08-15 15:48:53.438 7157-7157/com.dredaydesigns.radiostationfinder I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@18fd5d03 time:80203894
08-15 15:49:12.178 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 124.865ms
08-15 15:50:00.838 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 16.649ms
08-15 15:50:00.878 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 26.681ms
08-15 15:50:01.208 7157-7201/com.dredaydesigns.radiostationfinder V/MainActivity﹕ [
{
"FIELD1":"WGCU-FM ",
"FIELD2":"90.1 MHz ",
"FIELD3":"FS ",
"FIELD4":211,
"FIELD5":"ND ",
"FIELD6":"- ",
"FIELD7":"C1 ",
"FIELD8":"- ",
"FIELD9":"LIC ",
"FIELD10":"FORT MYERS ",
"FIELD11":"FL ",
"FIELD12":"US ",
"FIELD13":"BXLH -20120420ABN ",
"FIELD14":"30. kW ",
"FIELD15":"30. kW ",
"FIELD16":221,
"FIELD17":221,
"FIELD18":69042,
"FIELD19":"N ",
"FIELD20":26,
"FIELD21":48,
"FIELD22":54,
"FIELD23":"W ",
"FIELD24":81,
"FIELD25":45,
"FIELD26":43,
"FIELD27":"BOARD OF TRUSTEES, FLORIDA GULF COAST UNIVERSITY ",
"FIELD28":" 0.00 km ",
"FIELD29":" 0.00 mi ",
"FIELD30":" 0.00 deg ",
"FIELD31":"229. m",
"FIELD32":"229.0 m",
"FIELD33":"- ",
"FIELD34":"- ",
"FIELD35":"1020483",
"FIELD36":"220. m",
"FIELD37":1496547
},
{
"FIELD1":"KBBO-FM ",
"FIELD2":"92.1 MHz ",
"FIELD3":"FM ",
"FIELD4":221,
"FIELD5":"ND ",
"FIELD6":"- ",
"FIELD7":"C2 ",
"FIELD8":"- ",
"FIELD9":"LIC ",
"FIELD10":"HOUSTON ",
"FIELD11":"AK ",
"FIELD12":"US ",
"FIELD13":"BLH -20030916AAH ",
"FIELD14":"10. kW ",
"FIELD15":"10. kW ",
"FIELD16":270,
"FIELD17":270,
"FIELD18":68694,
"FIELD19":"N ",
"FIELD20":61,
"FIELD21":20,
"FIELD22":11,
"FIELD23":"W ",
"FIELD24":149,
"FIELD25":30,
"FIELD26":48,
"FIELD27":"OMG FCC LICENSES LLC ",
"FIELD28":" 0.00 km ",
"FIELD29":" 0.00 mi ",
"FIELD30":" 0.00 deg ",
"FIELD31":"598. m",
"FIELD32":"598.0 m",
"FIELD33":"- ",
"FIELD34":"- ",
"FIELD35":"1204036",
"FIELD36":"20. m",
"FIELD37":680555
},
{
"FIELD1":"WKUL ",
"FIELD2":"92.1 MHz ",
"FIELD3":"FM ",
"FIELD4":221,
"FIELD5":"ND ",
"FIELD6":"- ",
"FIELD7":"A ",
"FIELD8":"- ",
"FIELD9":"LIC ",
"FIELD10":"CULLMAN ",
"FIELD11":"AL ",
"FIELD12":"US ",
"FIELD13":"BLH -19951024KD ",
"FIELD14":"6. kW ",
"FIELD15":"6. kW ",
"FIELD16":100,
"FIELD17":100,
"FIELD18":31933,
"FIELD19":"N ",
"FIELD20":34,
"FIELD21":11,
"FIELD22":41,
"FIELD23":"W ",
"FIELD24":86,
"FIELD25":43,
"FIELD26":52,
"FIELD27":"JONATHAN CHRISTIAN CORP. ",
"FIELD28":" 0.00 km ",
"FIELD29":" 0.00 mi ",
"FIELD30":" 0.00 deg ",
"FIELD31":"342. m",
"FIELD32":"342.0 m",
"FIELD33":"- ",
"FIELD34":"- ",
"FIELD35":"- ",
"FIELD36":"92. m",
"FIELD37":215650
},
{
"FIELD1":"WJJN ",
"FIELD2":"92.1 MHz ",
"FIELD3":"FM ",
"FIELD4":221,
"FIELD5":"ND ",
"FIELD6":"- ",
"FIELD7":"A ",
"FIELD8":"- ",
"FIELD9":"LIC ",
"FIELD10":"COLUMBIA ",
"FIELD11":"AL ",
"FIELD12":"US ",
"FIELD13":"BLH -19951213KB ",
"FIELD14":"2.55 kW ",
"FIELD15":"2.55 kW ",
"FIELD16":152,
"FIELD17":152,
"FIELD18":30280,
"FIELD19":"N ",
"FIELD20":31,
"FIELD21":10,
"FIELD22":25,
"FIELD23":"W ",
"FIELD24":85,
"FIELD25":12,
"FIELD26":49,
"FIELD27":"WILSON BROADCASTING CO., INC. ",
"FIELD28":" 0.00 km ",
"FIELD29":" 0.00 mi ",
"FIELD30":" 0.00 deg ",
"FIELD31":"216. m",
"FIELD32":"216.0 m",
"FIELD33":"- ",
"FIELD34":"- ",
"FIELD35":"- ",
"FIELD36":"146. m",
"FIELD37":217857
},
{
"FIELD1":
08-15 15:50:02.898 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 18.539ms
08-15 15:50:02.898 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 7.261ms
08-15 15:50:05.398 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 16.810ms
08-15 15:50:06.408 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 26.965ms
08-15 15:50:06.448 7157-7201/com.dredaydesigns.radiostationfinder I/art﹕ WaitForGcToComplete blocked for 18.019ms for cause Alloc
08-15 15:50:06.498 7157-7201/com.dredaydesigns.radiostationfinder I/art﹕ WaitForGcToComplete blocked for 7.471ms for cause Alloc
08-15 15:50:06.768 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 5.497ms
08-15 15:50:06.958 7157-7166/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 72.266ms
08-15 15:50:06.958 7157-7201/com.dredaydesigns.radiostationfinder I/art﹕ WaitForGcToComplete blocked for 159.391ms for cause Alloc
08-15 15:50:06.988 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspend
ing all threads took: 22.886ms
08-15 15:50:07.148 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 14.793ms
08-15 15:50:07.248 7157-7178/com.dredaydesigns.radiostationfinder W/art﹕ Suspending all threads took: 42.333ms
08-15 15:50:07.258 7157-7201/com.dredaydesigns.radiostationfinder E/MainActivity﹕ Exception Caught:
org.json.JSONException: Value [{"FIELD1":"WGCU-FM ","FIELD2":"90.1 MHz ","FIELD3":"FS ","FIELD4":211,"FIELD5":"ND ","FIELD6":"- ","FIELD7":"C1 ","FIELD8":"- ","FIELD9":"LIC ","FIELD10":"FORT MYERS ","FIELD11":"FL ","FIELD12":"US ","FIELD13":"BXLH -20120420ABN ","FIELD14":"30. kW ","FIELD15":"30. kW ","FIELD16":221,"FIELD17":221,"FIELD18":69042,"FIELD19":"N ","FIELD20":26,"FIELD21":48,"FIELD22":54,"FIELD23":"W ","FIELD24":81,"FIELD25":45,"FIELD26":43,"FIELD27":"BOARD OF TRUSTEES, FLORIDA GULF COAST UNIVERSITY ","FIELD28":" 0.00 km ","FIELD29":" 0.00 mi ","FIELD30":" 0.00 deg ","FIELD31":"229. m","FIELD32":"229.0 m","FIELD33":"- ","FIELD34":"- ","FIELD35":"1020483","FIELD36":"220. m","FIELD37":1496547},{"FIELD1":"KBBO-FM ","FIELD2":"92.1 MHz ","FIELD3":"FM ","FIELD4":221,"FIELD5":"ND ","FIELD6":"- ","FIELD7":"C2 ","FIELD8":"- ","FIELD9":"LIC ","FIELD10":"HOUSTON ","FIELD11":"AK ","FIELD12":"US ","FIELD13":"BLH -20030916AAH ","FIELD14":"10. kW ","FIELD15":"10. kW ","FIELD16":270,"FIELD17":270,"FIELD18":68694,"FIELD19":"N ","FIELD20":61,"FIELD21":20,"FIELD22":11,"FIELD23":"W ","FIELD24":149,"FIELD25":30,"FIELD26":48,"FIELD27":"OMG FCC LICENSES LLC ","FIELD28":" 0.00 km ","FIELD29":" 0.00 mi ","FIELD30":" 0.00 deg ","FIELD31":"598. m","FIELD32":"598.0 m","FIELD33":"- ","FIELD34":"- ","FIELD35":"1204036","FIELD36":"20. m","FIELD37":680555},{"FIELD1":"WKUL ","FIELD2":"92.1 MHz ","FIELD3":"FM ","FIELD4":221,"FIELD5":"ND ","FIELD6":"- ","FIELD7":"A ","FIELD8":"- ","FIELD9":"LIC ","FIELD10":"CULLMAN ","FIELD11":"AL ","FIELD12":"US ","FIELD13":"BLH -19951024KD ","FIELD14":"6. kW ","FIELD15":"6. kW ","FIELD16":100,"FIELD17":100,"FIELD18":31933,"FIELD19":"N ","FIELD20":34,"FIELD21":11,"FIELD22":41,"FIELD23":"W ","FIELD24":86,"FIELD25":43,"FIELD26":52,"FIELD27":"JONATHAN CHRISTIAN CORP. ","FIELD28":" 0.00 km ","FIELD29":" 0.00 mi ","FIELD30":" 0.00 deg ","FIELD31":"342. m","FIELD32":"342.0 m","FIELD33":"- ","FIELD34":"- ","FIELD35":"- ","FIELD36":"92. m","FIELD37":215650},{"FIELD1":"WJJN ","FIELD2":"92.1 MHz ","FIELD3":"FM ","FIELD4":221,"FIELD5":"ND ","FIELD6":"- ","FIELD7":"A ","FIELD8":"- ","FIELD9":"LIC ","FIELD10":"COLUMBIA ","FIELD11":"AL ","FIELD12":"US ","FIELD13":"BLH -19951213KB ","FIELD14":"2.55 kW ","FIELD15":"2.55 kW ","FIELD16":152,"FIELD17":152,"FIELD18":30280,"FIELD19":"N ","FIELD20":31,"FIELD21":10,"FIELD22":25,"FIELD23":"W ","FIELD24":85,"FIELD25":12,"FIELD26":49,"FIELD27":"WILSON BROADCASTING CO., INC. ","FIELD28":" 0.00 km ","FIELD29":" 0.00 mi ","FIELD30":" 0.00 deg ","FIELD31":"216. m","FIELD32":"216.0 m","FIELD33":"- ","FIELD34":"- ","FIELD35":"- ","FIELD36":"146. m","FIELD37":217857},{"FIELD1":"WERH-FM ","FIELD2":"92.1 MHz ","FIELD3":"FM ","FIELD4":221,"FIELD5":"ND ","FIELD6":"- ","FIELD7":"A ","FIELD8":"- ","FIELD9":"LIC ","FIELD10":"HAMILTON ","FIELD11":"AL ","FIELD12":"US ","FIELD13":"BLH -3981 ","FIELD14":"3. kW ","FIELD15":"3. kW ","FIELD16":37,"FIELD17":37,"FIELD18":33473,"FIELD19":"N ","FIELD20":34,"FIELD21":7,"FIELD22":1,"FIELD23":"W ","FIELD24":87,"FIELD25":59,"FIELD26":29,"FIELD27":"KATE F. FITE ","FIELD28":" 0.00 km ","FIELD29":" 0.00 mi ","FIELD30":" 0.00 deg ","FIELD31":"202. m","FIELD32":"202.0 m","FIELD33":"- ","FIELD34":"- ","FIELD35":"- ","FIELD36":"87. m","FIELD37":300205},{"FIELD1":"WZEW ","FIELD2":"92.1 MHz ","FIELD3":"FM ","FIELD4":221,"FIELD5":"ND ","FIELD6":"-
我不确定异常是什么告诉了我，然后现在我很好奇我将如何根据FCC之前的经度和纬度来查询这些结果