我正在尝试制作一个应用程序，让多个用户将他们的当前位置发送到远程MySQL数据库，然后每个用户都可以拖动lat、long坐标来查看地图上的所有用户。我现在遇到的问题是，当我试图将我的位置发送到MySQL数据库时，我的应用程序崩溃了。如有任何帮助，我们将不胜感激。这是我的java活动：
package com.paul.locations;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import com.paul.locations.JSONParser;
import com.paul.locations.R;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Location extends Activity implements OnClickListener {
private GoogleMap googlemap;
private String lat="", lon="", current = "";
private Button bLoad, bStore;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
//php add a comment script
//localhost :
//testing on your device
//put your local ip instead, on windows, run CMD > ipconfig
//or in mac's terminal type ifconfig and look for the ip under en0 or en1
private static final String LOAD_INFO_URL = "http://192.168.1.14/locations/load_info.php";
private static final String UPDATE_INFO_URL = "http://192.168.1.14/locations/update_info.php";
//testing on Emulator:
//private static final String POST_COMMENT_URL = "http://10.0.2.2:1234/webservice/addcomment.php";
//testing from a real server:
//private static final String POST_COMMENT_URL = "http://www.mybringback.com/webservice/addcomment.php";
//ids
private static final String TAG_SUCCESS = "success";
private static final String TAG_MESSAGE = "message";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
setUpMap();
bLoad = (Button)findViewById(R.id.bLoad);
bLoad.setOnClickListener(this);
bStore = (Button)findViewById(R.id.bStore);
bStore.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.bLoad:
new AttemptLoad().execute();
break;
case R.id.bStore:
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
android.location.Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
lon = Double.toString(location.getLongitude());
lat = Double.toString(location.getLatitude());
System.out.println(lon + ", " + lat);
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");
current = df.format(c.getTime());
System.out.println(current);
new AttemptStore().execute();
break;
default:
break;
}
}
class AttemptLoad extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Location.this);
pDialog.setMessage("Attempting to load locations...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
return null;
}
}
class AttemptStore extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Location.this);
pDialog.setMessage("Attempting to store your location...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
String success;
try {
// Building Parameters
List<NameValuePair> params1 = new ArrayList<NameValuePair>();
params1.add(new BasicNameValuePair("lat", lat));
params1.add(new BasicNameValuePair("lon", lon));
params1.add(new BasicNameValuePair("time", current));
Log.d("request!", "starting");
//Posting user data to script
JSONObject json = jsonParser.makeHttpRequest(
UPDATE_INFO_URL, "POST", params1);
// full json response
Log.d("Store location attempt", json.toString());
// json success element
success = json.getString(TAG_SUCCESS);
if(success.equals("SUCCESS")) {
Log.d("Location Stored!", json.toString());
finish();
return json.getString(TAG_MESSAGE);
}else{
Log.d("Storing Location Failure!", json.getString(TAG_MESSAGE));
return json.getString(TAG_MESSAGE);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
//if (file_url != null){
//Toast.makeText(Location.this, file_url, Toast.LENGTH_LONG).show();
//}
}
}
private void setUpMap() {
if(googlemap == null){
googlemap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap();
if(googlemap != null){
//code to initialize the map
googlemap.setMyLocationEnabled(true);
}
}
}
}
我很确定错误发生在"尝试存储"类中，因为点击b存储按钮会产生错误
这是logcat：
07-31 13:27:40.245: D/SensorManager(30830): unregisterListener:: Listener= android.view.OrientationEventListener$SensorEventListenerImpl@41d55290
07-31 13:27:40.245: I/SensorManager(30830): Set normal delay = true
07-31 13:27:40.245: D/SensorManager(30830): registerListener :: handle = 4 name= MPL accel delay= 200000 Listener= android.view.OrientationEventListener$SensorEventListenerImpl@41d58410
07-31 13:27:40.255: W/IInputConnectionWrapper(30830): getSelectedText on inactive InputConnection
07-31 13:27:40.265: W/IInputConnectionWrapper(30830): setComposingText on inactive InputConnection
07-31 13:27:43.779: D/request!(30830): starting
07-31 13:27:43.799: I/Adreno200-EGLSUB(30830): <ConfigWindowMatch:2087>: Format RGBA_8888.
07-31 13:27:43.829: D/SensorManager(30830): unregisterListener:: Listener= android.view.OrientationEventListener$SensorEventListenerImpl@41d58410
07-31 13:27:43.829: I/SensorManager(30830): Set normal delay = true
07-31 13:27:45.241: D/Login attempt(30830): {"message":"Login successful!","success":1}
07-31 13:27:45.241: D/Login Successful!(30830): {"message":"Login successful!","success":1}
07-31 13:27:45.661: D/AbsListView(30830): Get MotionRecognitionManager
07-31 13:27:45.771: I/Adreno200-EGLSUB(30830): <ConfigWindowMatch:2087>: Format RGBA_8888.
07-31 13:27:45.801: I/Adreno200-EGLSUB(30830): <ConfigWindowMatch:2098>: Format RGBX_8888.
07-31 13:27:45.961: W/IInputConnectionWrapper(30830): getSelectedText on inactive InputConnection
07-31 13:27:45.961: W/IInputConnectionWrapper(30830): setComposingText on inactive InputConnection
07-31 13:27:49.765: I/System.out(30830): -117.21201925, 32.75091863
07-31 13:27:49.765: I/System.out(30830): 13:27:49
07-31 13:27:49.796: D/request!(30830): starting
07-31 13:27:49.816: I/Adreno200-EGLSUB(30830): <ConfigWindowMatch:2087>: Format RGBA_8888.
07-31 13:27:50.987: E/JSON Parser(30830): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
07-31 13:27:50.987: D/Store location attempt(30830): {"message":"Login successful!","success":1}
07-31 13:27:50.987: D/Storing Location Failure!(30830): Login successful!
错误是JSON解析器无法解析数据。我知道我的PHP脚本是正确的，因为我只需在浏览器中加载它们就可以发送和接收数据。任何帮助都是超酷的
谢谢！
是否检查json格式
你有这个错误
分析数据org.json.JSONException时出错：值
那么检查响应是否得到json对象或json数组？