java - Target host must not be null error -


i'm having issue fetching json url android, , have error stated in titles url. have posted relevant code below. if more required, can provide it. @ moment, have provided snippets of code being flagged error.

the error:

    04-06 23:13:44.533  20566-20855/edu.appdesign.leaguestats e/androidruntime﹕ fatal exception: asynctask #1     process: edu.appdesign.leaguestats, pid: 20566     java.lang.runtimeexception: error occured while executing doinbackground()             @ android.os.asynctask$3.done(asynctask.java)             @ java.util.concurrent.futuretask.finishcompletion(futuretask.java:355)             @ java.util.concurrent.futuretask.setexception(futuretask.java:222)             @ java.util.concurrent.futuretask.run(futuretask.java:242)             @ android.os.asynctask$serialexecutor$1.run(asynctask.java)             @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)             @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)             @ java.lang.thread.run(thread.java:864)      caused by: java.lang.illegalargumentexception: illegal character in query @ index 166: https://prod.api.pvp.net/api/lol/na/v1.4/summoner/by-name/android.widget.edittext%7b41b76038+vfed..cl+.f......+0%2c0-804%2c118+%237f08003d+app%3aid%2fname%7d?api_key=<d96236d2-6ee3-4cfd-afa7-f41bdbc11128>             @ java.net.uri.create(uri.java:727)             @ org.apache.http.client.methods.httppost.<init>(httppost.java)             @ edu.appdesign.leaguestats.jsonparser.getjsonfromurl(jsonparser.java:45)             @ edu.appdesign.leaguestats.statsactivity$getstats.doinbackground(statsactivity.java:63)             @ edu.appdesign.leaguestats.statsactivity$getstats.doinbackground(statsactivity.java:24)             @ android.os.asynctask$2.call(asynctask.java)             @ java.util.concurrent.futuretask.run(futuretask.java:237)             at android.os.asynctask$serialexecutor$1.run(asynctask.java)             at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112)             at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587)             at java.lang.thread.run(thread.java:864) 04-06 23:13:44.543  19569-20025/? e/activitymanager﹕ app crashed! process: edu.appdesign.leaguestats

public class statsactivity extends activity {

protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.stats_activity);      getstats stats = new getstats();     stats.execute(); }  class getstats extends asynctask<void, void, void> {      private string api_key="d96236d2-6ee3-4cfd-afa7-f41bdbc11128";     string region = mainactivity.region;     string name = mainactivity.name;     string url = null;     string encodedname = null;     string encodedkey = null;     string encodedregion = null;     textview textid = (textview) findviewbyid(r.id.id);     textview textname = (textview) findviewbyid(r.id.name);     textview textprofileiconid = (textview) findviewbyid(r.id.profileiconid);     textview textrevisiondate = (textview) findviewbyid(r.id.revisiondate);     textview textsummonerlevel = (textview) findviewbyid(r.id.summonerlevel);      long jid;     string jname;     int jprofileiconid;     long jrevisiondate;     long jsummonerlevel;      @override     protected void onpreexecute() {         super.onpreexecute();         try {             encodedname = urlencoder.encode(name, "utf-8");             encodedkey = urlencoder.encode(api_key, "utf-8");             encodedregion = urlencoder.encode(region, "utf-8");             url = "https://prod.api.pvp.net/api/lol/" + encodedregion + "/v1.4/summoner/by-name/" + encodedname + "?api_key=<" + encodedkey + ">";          } catch (unsupportedencodingexception e) {             e.printstacktrace();         }      }      @override     protected void doinbackground(void... arg0) {         jsonparser jparser = new jsonparser();         jsonobject json = jparser.getjsonfromurl(url);          try {              jid = json.getlong("id");             jname = json.getstring("dataversion");             jprofileiconid = json.getint("profileiconid");             jrevisiondate = json.getlong("revisiondate");             jsummonerlevel = json.getlong("summonerlevel");          } catch (jsonexception e) {             e.printstacktrace();         }          return null;     }      @override     protected void onpostexecute(void result) {         super.onpostexecute(result);         /**          * put json data on screen          * */          string id = string.valueof(jid);         string name = string.valueof(jname);         string icon = string.valueof(jprofileiconid);         string rev = string.valueof(jrevisiondate);         string summlevel = string.valueof(jsummonerlevel);          textid.settext(id);         textname.settext(name);         textprofileiconid.settext(icon);         textrevisiondate.settext(rev);         textsummonerlevel.settext(summlevel);          }     } }


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