android - Having issues parsing JSON data to TextView the app just crashes -

i cannot anything. once input completed crashes.

the commented out section how displayed information want upc , product displayed. ideas?

if there question out there, please link it.

crash logs:

04-08 21:12:52.416: w/dalvikvm(26817): threadid=12: thread exiting uncaught exception (group=0x40ac4228) 04-08 21:12:52.426: e/androidruntime(26817): fatal exception: thread-48634 04-08 21:12:52.426: e/androidruntime(26817): java.lang.nullpointerexception 04-08 21:12:52.426: e/androidruntime(26817):    @ net.example.glutefree.networking.getserverdata(networking.java:113) 04-08 21:12:52.426: e/androidruntime(26817):    @ net.example.glutefree.networking.access$0(networking.java:68) 04-08 21:12:52.426: e/androidruntime(26817):    @ net.example.glutefree.networking$1.run(networking.java:49) 04-08 21:12:52.727: e/log_tag(26817): result             [{"id":"512320","upca":"310742023497","company":"310742","product":"oxy max deep pore pads","gluten free":null}] 04-08 21:12:52.727: w/dalvikvm(26817): threadid=13: thread exiting uncaught exception (group=0x40ac4228) 04-08 21:12:52.737: e/androidruntime_2_crash(26817): crash in same process: thread-48635 04-08 21:12:52.737: e/androidruntime_2_crash(26817): java.lang.nullpointerexception 04-08 21:12:52.737: e/androidruntime_2_crash(26817):    @ net.example.glutefree.networking.getserverdata(networking.java:113) 04-08 21:12:52.737: e/androidruntime_2_crash(26817):    @ net.example.glutefree.networking.access$0(networking.java:68) 04-08 21:12:52.737: e/androidruntime_2_crash(26817):    @ net.example.glutefree.networking$1.run(networking.java:49) 

---

package net.example.glutefree;   import android.app.activity; import android.os.bundle; import java.io.bufferedreader; import java.io.inputstream; import java.io.inputstreamreader; import java.util.arraylist;  import org.apache.http.httpentity; import org.apache.http.httpresponse; import org.apache.http.namevaluepair; import org.apache.http.client.httpclient; import org.apache.http.client.entity.urlencodedformentity; import org.apache.http.client.methods.httppost; 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; import android.widget.edittext; import android.widget.linearlayout; import android.widget.textview;    public class networking extends activity{ textview txt; int request_code = 1; //called when activity first created @override protected void oncreate(bundle savedinstancestate) {      super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_networking);     txt = new textview(getapplicationcontext());       // set text , call connect function.      txt.settext("connecting...");   //call method run data retreival     new thread() {         public void run() {             final string data = getserverdata(key_121);             if (data != null)                 runonuithread(new runnable()                 {                     public void run()                     {                        txt.settext(data);                      }                 });         }     }.start();  }    public static final string key_121 = "http://glutefree.com/application_query.php";  private string getserverdata(string returnstring) {    string upc = getintent().getstringextra("upca");    inputstream = null;    string result = "";     //the upc data send     arraylist<namevaluepair> namevaluepairs = new arraylist<namevaluepair>();      namevaluepairs.add(new basicnamevaluepair("upca",upc));      //http post     try{              httpclient httpclient = new defaulthttpclient();             httppost httppost = new httppost(key_121);             httppost.setentity(new urlencodedformentity(namevaluepairs));             httpresponse response = httpclient.execute(httppost);             httpentity entity = response.getentity();             = entity.getcontent();      }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());     }     //parse json data     try{             jsonarray jarray = new jsonarray(result);             log.e("log_tag", "result "+result.tostring());              for(int i=0;i<jarray.length();i++){                     jsonobject json_data = jarray.getjsonobject(i);                     string upca = json_data.getstring("upca");                     string product = json_data.getstring("product");                     textview upca = (textview)findviewbyid(r.id.textview1);                     upca.settext("upca: " + upca);                     textview product = (textview)findviewbyid(r.id.textview2);                     product.settext("product: " + product);                    /* log.i("log_tag","upca: "+json_data.getstring("upca")+                             ", product: "+json_data.getstring("product"));*/                     //get output screen                     returnstring += "\n\t" + jarray.getjsonobject(i);             }     }catch(jsonexception e){             log.e("log_tag", "error parsing data "+e.tostring());     }     return returnstring; }     } 

xml file:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context=".networking" >  <textview     android:id="@+id/textview1"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignparentleft="true"     android:layout_alignparenttop="true"     android:layout_marginleft="37dp"     android:layout_margintop="38dp"     android:text="textview" />  <textview     android:id="@+id/textview2"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignright="@+id/textview1"     android:layout_below="@+id/textview1"     android:layout_margintop="63dp"     android:text="textview" />  </relativelayout> 

new errors:

04-08 22:27:38.545: e/log_tag(3312): result             [{"id":"512320","upca":"310742023497","company":"310742","product":"oxy max deep pore pads","gluten free":null}] 04-08 22:27:38.545: w/dalvikvm(3312): threadid=12: thread exiting uncaught exception (group=0x40aa6228) 04-08 22:27:38.565: e/androidruntime(3312): fatal exception: thread-475 04-08 22:27:38.565: e/androidruntime(3312): android.view.viewrootimpl$calledfromwrongthreadexception: original thread created view hierarchy can touch views. 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.viewrootimpl.checkthread(viewrootimpl.java:4381) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.viewrootimpl.requestlayout(viewrootimpl.java:805) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.view.requestlayout(view.java:12887) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.view.requestlayout(view.java:12887) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.view.requestlayout(view.java:12887) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.view.requestlayout(view.java:12887) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.widget.relativelayout.requestlayout(relativelayout.java:268) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.view.view.requestlayout(view.java:12887) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.widget.textview.checkforrelayout(textview.java:7207) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.widget.textview.settext(textview.java:3474) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.widget.textview.settext(textview.java:3324) 04-08 22:27:38.565: e/androidruntime(3312):     @ android.widget.textview.settext(textview.java:3299) 04-08 22:27:38.565: e/androidruntime(3312):     @ net.example.glutefree.networking.getserverdata(networking.java:108) 04-08 22:27:38.565: e/androidruntime(3312):     @ net.example.glutefree.networking.access$0(networking.java:63) 04-08 22:27:38.565: e/androidruntime(3312):     @ net.example.glutefree.networking$1.run(networking.java:44) 

ok, logs can see have nullpointerexception on line 113:

textview upca = (textview)findviewbyid(r.id.textview1); //line 112 upca.settext("upca: " + upca); //line 113 

this means upca textview not initialised in line 112. can check if have textview1 in layout have set above?

update: second error getting viewrootimpl$calledfromwrongthreadexception: original thread created view hierarchy can touch views.

this happens when trying update ui thread thread. doing in code calling getserverdata() new thread, while within method trying change text of textviews in ui thread.

hope above makes sense?