(com.google.android.gms.maps.model.MarkerOptions)' on a null object reference -


this question has answer here:

mainactivity.java

package com.example.neetu.mapexample; import android.app.actionbar; import android.location.address; import android.location.geocoder; import android.os.asynctask; import android.support.v4.app.fragmentactivity; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.menu; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.toast;  import com.google.android.gms.maps.cameraupdatefactory; import com.google.android.gms.maps.googlemap; import com.google.android.gms.maps.onmapreadycallback; import com.google.android.gms.maps.supportmapfragment; import com.google.android.gms.maps.model.latlng; import com.google.android.gms.maps.model.markeroptions;  import java.io.ioexception; import java.util.list;  public class mainactivity extends fragmentactivity implements onmapreadycallback {      googlemap googlemap;     markeroptions markeroptions;     latlng latlng;     edittext etlocation;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          supportmapfragment mapfragment = (supportmapfragment) getsupportfragmentmanager()                 .findfragmentbyid(r.id.map);         mapfragment.getmapasync(this);           button btn_find = (button) findviewbyid(r.id.btn_find);         etlocation = (edittext) findviewbyid(r.id.et_location);          view.onclicklistener findclicklistener = new view.onclicklistener()         {             @override             public void onclick(view v)             {                 string location = etlocation.gettext().tostring();                  if(location!=null && !location.equals("")){                     new geocodertask().execute(location);                 }             }         };         btn_find.setonclicklistener(findclicklistener);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         //getmenuinflater().inflate(r.menu.activity_main, menu);         return true;     }      @override     public void onmapready(googlemap googlemap)     {      }      private class geocodertask extends asynctask<string, void, list<address>>     {          @override         protected list<address> doinbackground(string... locationname)         {             // creating instance of geocoder class             geocoder geocoder = new geocoder(getbasecontext());             list<address> addresses = null;              try {                 // getting maximum of 3 address matches input text                 addresses = geocoder.getfromlocationname(locationname[0], 3);             } catch (ioexception e) {                 e.printstacktrace();             }             //toast.maketext(mainactivity.this, (charsequence) addresses, toast.length_short).show();             return addresses;         }          @override         protected void onpostexecute(list<address> addresses)         {              if(addresses==null || addresses.size()==0)             {                 toast.maketext(getbasecontext(), "no location found", toast.length_short).show();             }              // clears existing markers on map             //googlemap.clear();              // adding markers on google map each matching address             for(int i=0;i<addresses.size();i++){                  address address = (address) addresses.get(i);                  // creating instance of geopoint, display in google map                 latlng = new latlng(address.getlatitude(), address.getlongitude());                  string addresstext = string.format("%s, %s",                         address.getmaxaddresslineindex() > 0 ? address.getaddressline(0) : "",                         address.getcountryname());                  toast.maketext(mainactivity.this, addresstext, toast.length_short).show();                  googlemap.addmarker(new markeroptions().position(latlng).title(addresstext));                 if(i==0)                     googlemap.animatecamera(cameraupdatefactory.newlatlng(latlng));             }         }     } }

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <linearlayout 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:orientation="vertical"     tools:context=".mainactivity" >      <relativelayout         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:orientation="horizontal" >          <button             android:id="@+id/btn_find"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="@string/str_btn_find"             android:layout_alignparentright="true" />          <edittext             android:id="@+id/et_location"             android:layout_width="fill_parent"             android:layout_height="wrap_content"             android:inputtype="text"             android:hint="@string/hnt_et_location"             android:layout_toleftof="@id/btn_find" />     </relativelayout>      <fragment xmlns:android="http://schemas.android.com/apk/res/android"         android:id="@+id/map"         android:layout_width="match_parent"         android:layout_height="match_parent"         class="com.google.android.gms.maps.supportmapfragment" />  </linearlayout>

androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.example.neetu.mapexample">      <!--          access_coarse/fine_location permissions not required use          google maps android api v2, must specify either coarse or fine          location permissions 'mylocation' functionality.      -->      <uses-permission android:name="android.permission.internet"/>     <uses-permission android:name="android.permission.write_external_storage"/>     <uses-permission android:name="com.google.android.providers.gsf.permission.read_gservices"/>     <uses-permission android:name="android.permission.access_coarse_location"/>     <uses-permission android:name="android.permission.access_fine_location"/>       <application         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:roundicon="@mipmap/ic_launcher_round"         android:supportsrtl="true"         android:theme="@style/apptheme">         <activity android:name=".mainactivity">             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>         <!--              api key google maps-based apis defined string resource.              (see file "res/values/google_maps_api.xml").              note api key linked encryption key used sign apk.              need different api key each encryption key, including release key used              sign apk publishing.              can define keys debug , release targets in src/debug/ , src/release/.          -->         <meta-data             android:name="com.google.android.geo.api_key"             android:value="@string/google_maps_key" />          <activity             android:name=".mapsactivity"             android:label="@string/title_activity_maps"></activity>     </application>  </manifest>

i try mark , display place input place name in edit text here error occur. please me.

locat

java.lang.nullpointerexception: attempt invoke virtual method 'com.google.android.gms.maps.model.marker com.google.android.gms.maps.googlemap.addmarker(com.google.android.gms.maps.model.markeroptions)' on null object reference @ com.example.neetu.mapexample.mainactivity$geocodertask.onpostexecute(mainactivity.java:119) @ com.example.neetu.mapexample.mainactivity$geocodertask.onpostexecute(mainactivity.java:73)

it because haven't assigned value googlemap field yet. update value when ready.

@override public void onmapready(googlemap googlemap){     this.googlemap = googlemap; }

also add googlemap != null contition in click listener.

if(googlemap!=null && location!=null && !location.equals("")){     new geocodertask().execute(location); }

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