java - Error converting result HttpPost android -
i've been working on app pulls json string server. access json need post key , secret. else error saying key and/or secret missing.
my jsonfunctions.java
package com.spxc.ssa.streaming.task; import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstream; import java.io.inputstreamreader; import java.util.arraylist; import java.util.hashmap; import java.util.list; import org.apache.http.httpentity; import org.apache.http.httpresponse; import org.apache.http.namevaluepair; import org.apache.http.client.clientprotocolexception; import org.apache.http.client.httpclient; import org.apache.http.client.entity.urlencodedformentity; import org.apache.http.client.methods.httpget; import org.apache.http.client.methods.httppost; import org.apache.http.entity.stringentity; import org.apache.http.impl.client.defaulthttpclient; import org.apache.http.message.basicnamevaluepair; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject; import android.util.log; public class jsonfunctions { public static jsonobject getjsonfromurl(string url){ inputstream = null; string result = ""; jsonobject jarray = null; //http post try{ httpclient httpclient = new defaulthttpclient(); httppost httppost = new httppost(url); try { // add data list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(2); namevaluepairs.add(new basicnamevaluepair("key", "12345")); namevaluepairs.add(new basicnamevaluepair("secret", "anddev cool!")); httppost.setentity(new urlencodedformentity(namevaluepairs)); // execute http post request httpresponse response = httpclient.execute(httppost); } catch (clientprotocolexception e) { // todo auto-generated catch block } catch (ioexception e) { // todo auto-generated catch block } //mhfgpammv9f94ddayh8gsweji }catch(exception e){ log.e("log_tag", "error in http connection "+e.tostring()); } //convert response string try{ bufferedreader reader = new bufferedreader(new inputstreamreader(is,"iso-8859-1"),8); stringbuilder sb = new stringbuilder(); string line = null; while ((line = reader.readline()) != null) { sb.append(line + "\n"); } is.close(); result=sb.tostring(); }catch(exception e){ log.e("log_tag", "error converting result "+e.tostring()); } try{ jarray = new jsonobject(result); }catch(jsonexception e){ log.e("log_tag", "error parsing data "+e.tostring()); } return jarray; } } my activity:
package com.spxc.ssa.streaming; import java.util.arraylist; import java.util.hashmap; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject; import android.app.progressdialog; import android.content.intent; import android.os.bundle; import android.util.log; import android.view.view; import android.view.view.onclicklistener; import android.widget.adapterview; import android.widget.adapterview.onitemclicklistener; import android.widget.listadapter; import android.widget.listview; import android.widget.simpleadapter; import com.actionbarsherlock.app.sherlocklistactivity; import com.actionbarsherlock.view.menuitem; import com.spxc.ssa.streaming.task.jsonasync; import com.spxc.ssa.streaming.task.jsonasync.jsonlistener; public class listmoviescontroller extends sherlocklistactivity implements onclicklistener { private progressdialog mdialog; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); // getwindow().setformat(pixelformat.translucent); setcontentview(r.layout.dblist); getsupportactionbar().setdisplayhomeasupenabled(true); getsupportactionbar().settitle("movies"); jsonasync asynctask = new jsonasync(); // using anonymous interface listen objects when task // completes. asynctask.setjsonlistener(new jsonlistener() { @override public void onobjectreturn(jsonobject object) { handlejsonobject(object); } }); // show progress loader while accessing network, , start async task. mdialog = progressdialog.show(this, getsupportactionbar().gettitle(), getstring(r.string.loading), true); asynctask.execute("http://sirsmokealot.ch/api/video/movies/"); } @override public boolean onoptionsitemselected(menuitem item) { switch (item.getitemid()) { case android.r.id.home: finish(); break; } return false; } @override public void onclick(view v) { // todo auto-generated method stub } private void handlejsonobject(jsonobject object) { arraylist<hashmap<string, string>> mylist = new arraylist<hashmap<string, string>>(); try { jsonarray shows = object.getjsonarray("items"); (int = 0; < shows.length(); i++) { hashmap<string, string> map = new hashmap<string, string>(); jsonobject e = shows.getjsonobject(i); map.put("video_id", string.valueof(i)); map.put("video_title", "" + e.getstring("video_title")); map.put("video_channel", "" + e.getstring("video_channel")); map.put("video_location", "" + e.getstring("video_location")); mylist.add(map); } } catch (jsonexception e) { log.e("log_tag", "error parsing data " + e.tostring()); } listadapter adapter = new simpleadapter(this, mylist, r.layout.dbitems, new string[] { "video_title", "video_location" }, new int[] { r.id.item_title, r.id.item_subtitle }); setlistadapter(adapter); final listview lv = getlistview(); lv.settextfilterenabled(true); lv.setonitemclicklistener(new onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { @suppresswarnings("unchecked") hashmap<string, string> o = (hashmap<string, string>) lv .getitematposition(position); intent myintent = new intent(listmoviescontroller.this, testvideocontroller.class); myintent.putextra("video_title", o.get("video_title")); myintent.putextra("video_channel", o.get("video_channel")); myintent.putextra("video_location", o.get("video_location")); startactivity(myintent); } }); if (mdialog != null && mdialog.isshowing()) { mdialog.dismiss(); } } } my logcat says:
error converting result java.lang.nullpointerexception: lock == null error parsing data org.json.jsonexception: end of input @ character 0 of any appreciated! thanks
you miss these 2 lines after getting response server
// execute http post request
httpresponse response = httpclient.execute(httppost); httpentity httpentity = httpresponse.getentity(); = httpentity.getcontent(); 
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