android - Google maps Places API not working -

package com.example.googlemapstestproject;  import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstream; import java.io.inputstreamreader; import java.io.unsupportedencodingexception; import java.net.httpurlconnection; import java.net.malformedurlexception; import java.net.url; import java.net.urlencoder; import java.util.arraylist; import java.util.hashmap; import java.util.list;  import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject;  import android.os.asynctask; import android.os.bundle; import android.support.v7.app.actionbaractivity; import android.text.editable; import android.text.textwatcher; import android.util.log; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.autocompletetextview; import android.widget.button; import android.widget.simpleadapter; import android.widget.toast;  import com.google.android.gms.maps.googlemap; import com.google.android.gms.maps.googlemap.onmaplongclicklistener; import com.google.android.gms.maps.googlemap.onmylocationbuttonclicklistener; import com.google.android.gms.maps.mapfragment; import com.google.android.gms.maps.model.bitmapdescriptorfactory; import com.google.android.gms.maps.model.latlng; import com.google.android.gms.maps.model.markeroptions;  public class mainactivity extends actionbaractivity implements onmaplongclicklistener, onmylocationbuttonclicklistener,         android.view.view.onclicklistener {      private googlemap mmap;     button userlocation;`enter code here`     gpstracker gps;      placestask placestask;     parsertask parsertask;      autocompletetextview autocompview;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          autocompview = (autocompletetextview) findviewbyid(r.id.atv_places);           autocompview.setthreshold(1);          autocompview.addtextchangedlistener(new textwatcher() {              @override             public void ontextchanged(charsequence s, int start, int before, int count) {                 placestask = new placestask();                 placestask.execute(s.tostring());             }              @override             public void beforetextchanged(charsequence s, int start, int count, int after) {                 // todo auto-generated method stub             }              @override             public void aftertextchanged(editable s) {                 // todo auto-generated method stub              }         });          try {             // loading map             initilizemap();          } catch (exception e) {             e.printstacktrace();         }          mmap.setonmaplongclicklistener(this);         mmap.setmylocationenabled(true);         mmap.getuisettings().setzoomcontrolsenabled(true);     }       private string downloadurl(string strurl) throws ioexception {          string data = "";         inputstream istream = null;         httpurlconnection urlconnection = null;         try {              url url = new url(strurl);              // creating http connection communicate url             urlconnection = (httpurlconnection) url.openconnection();              // connecting url             urlconnection.connect();              // reading data url             istream = urlconnection.getinputstream();              bufferedreader br = new bufferedreader(new inputstreamreader(istream));              stringbuffer sb = new stringbuffer();              string line = "";             while ((line = br.readline()) != null) {                  sb.append(line);             }              data = sb.tostring();             br.close();          } catch (exception e) {              log.d("exception while downloading url", e.tostring());          }          {              istream.close();             urlconnection.disconnect();         }          return data;     }      // fetches places googleplaces autocomplete web service     private class placestask extends asynctask<string, void, string> {          @override         protected string doinbackground(string... place) {              // storing data web service             string data = "";              // obtain browser key https://code.google.com/apis/console             string key = "key=aizasydtg7d-jnrlrxe75qdeeeagr1xnshgx9v4";              string input = "";              try {                 input = "input=" + urlencoder.encode(place[0], "utf-8");             } catch (unsupportedencodingexception e1) {                 e1.printstacktrace();             }              // place type searched             string types = "types=(cities)";              // sensor enabled             string sensor = "sensor=false";              // building parameters web service             string parameters = input + "&" + types + "&" + sensor + "&" + key;              // output format             string output = "json";              // building url web service             string url = "https://maps.googleapis.com/maps/api/place/autocomplete/" + output + "?" + parameters;              try {                 // fetching data service                 data = downloadurl(url);             } catch (exception e) {                 log.d("background task", e.tostring());             }             return data;         }           // executed after complete execution of doinbackground() method         @override         protected void onpostexecute(string result) {              // instantiating parsertask parses json data             // geocoding webservice             // in non-ui thread             parsertask parsertask = new parsertask();              // start parsing places in json format             // invokes "doinbackground()" method of class parsetask             parsertask.execute(result);         }     }      // class parse google places in json format     private class parsertask extends asynctask<string, integer, list<hashmap<string, string>>> {          jsonobject jobject;          @override         protected list<hashmap<string, string>> doinbackground(string... jsondata) {              list<hashmap<string, string>> places = null;              placejsonparser placejsonparser = new placejsonparser();               try {                 jobject = new jsonobject(jsondata[0]);                  // getting parsed data list                 places = placejsonparser.parse(jobject);              } catch (exception e) {                 log.d("exception", e.tostring());             }             return places;         }           @override         protected void onpostexecute(list<hashmap<string, string>> result) {              string[] = new string[] { "description" };             int[] = new int[] { r.layout.listview_layout };              // creating simpleadapter autocompletetextview             simpleadapter adapter = new simpleadapter(getbasecontext(), result, android.r.layout.simple_list_item_1, from, to);              // setting adapter             autocompview.setadapter(adapter);         }     }      @override     public void onclick(view v) {         // todo auto-generated method stub      } } 

updated code update, looks fine there nothing appearing still when type in place.

i have made google maps half , half listview if has solutions on how them work great.

if use library provides googleplaceautocomplete widget, check out sprockets (i'm developer). after setting api key, add working places api autocomplete layout like:

<net.sf.sprockets.widget.googleplaceautocomplete     xmlns:sprockets="http://schemas.android.com/apk/res-auto"     android:id="@+id/place"     android:layout_width="match_parent"     android:layout_height="wrap_content"     sprockets:types="(cities)"/>