我正在使用jsonParser两次。我在第二种方法中使用它时遇到错误。 有人能告诉我为什么会收到这个错误吗？
这是我使用它的第一种方法
protected Void doInBackground(Void... arg0) {
ServiceHandler jsonParser = new ServiceHandler();
//String json = jsonParser.makeServiceCall(URL_TIME, ServiceHandler.GET);
/*DatePickerDialog.OnDateSetListener datePickerListener1 = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
et.setText(selectedYear + "/" + (selectedMonth + 1) + "/"
+ selectedDay);
datestr = et.getText().toString();
}
};*/
Log.e("Response: ", "> JSON RESPONSE " + datestr );
String json = jsonParser.makeServiceCall("http://10.0.2.2/trackingsystem/get_time3.php?datestr=" + datestr ,ServiceHandler.GET);
Log.e("Response: ", "> " + json );
if (json != null) {
try {
JSONObject jsonObj = new JSONObject(json);
if (jsonObj != null) {
JSONArray timeA = jsonObj.getJSONArray("daydate");
for (int i = 0; i < timeA.length(); i++) {
JSONObject timeObj = (JSONObject) timeA.get(i);
TTime tobj = new TTime(timeObj.getString("time"));
TimeList.add(tobj);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("JSON Data", "DID NOT RECEIVE ANY DATA FROM THE SERVER!");
}
return null;
}
这是我使用它的第二种方法
private class PlotMap extends AsyncTask<Void, Void, Void>
{
@Override
protected Void doInBackground(Void... arg0) {
//Log.e("Response: ", "> JSON RESPONSE " + datestr + seltime);
String json1 = jsonParser.makeServiceCall("http://10.0.2.2/trackingsystem/latlng.php?datestr=" + datestr + "&time=" + seltime ,ServiceHandler.GET);
Log.e("Response: ", "> " + json1 );
if (json1 != null) {
try {
JSONObject jsonObj = new JSONObject(json1);
JSONArray jArray1 = jsonObj.getJSONArray(json1);
//JSONArray jArray1 = new JSONArray(json1);
for (int i = 0; i < jArray1.length(); i++) {
JSONObject json_data = jArray1.getJSONObject(i);
JSONObject json_data1 = jArray1.getJSONObject(i);
latString =json_data.getString("lat") + "\n";
lonString =json_data1.getString("lon") + "\n";
System.out.println(latString);
System.out.println(lonString);
}
Intent intent = new Intent(getApplicationContext(), Map.class);
Bundle extras = new Bundle();
extras.putString("LATITUDE", latString);
extras.putString("LONGITUDE", lonString);
intent.putExtras(extras);
startActivity(intent);
}catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("JSON Data", "DID NOT RECEIVE ANY DATA FROM THE SERVER!");
}
return null;
}
}