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POI want to add marker on map and zoom to that location
 

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  1. POI want to add marker on map and zoom to that location
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    <p>I am developing app in which i can see map and place some marker on it and zoom to that location.</p> <p>i successfully displayed my map view . but after adding marker and zooming code its forcefully closed... please guide me i have given my code below and also my log cat post.</p> <pre><code>package com.appeal.my_map; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.model.CameraPosition; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.MarkerOptions; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.Menu; public class MainActivity extends FragmentActivity { private GoogleMap googlemap; double latitude = 17.385044; double longitude = 78.486671; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); marker(); CameraPosition cameraPosition = new CameraPosition.Builder().target( new LatLng(17.385044, 78.486671)).zoom(12).build(); googlemap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition)); } private void marker() { // TODO Auto-generated method stub MarkerOptions marker = new MarkerOptions().position(new LatLng(latitude, longitude)).title("Hello Maps "); googlemap.addMarker(marker); googlemap.setMyLocationEnabled(true); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } </code></pre> <p><strong>My xml file</strong></p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" &gt; &lt;fragment android:id="@+id/map" android:layout_width="match_parent" android:layout_height="match_parent" class="com.google.android.gms.maps.SupportMapFragment"/&gt; &lt;/LinearLayout&gt; </code></pre> <p><strong>Log Cat</strong></p> <pre><code>7561 com.appeal.my_map AndroidRuntime FATAL EXCEPTION: main 7561 com.appeal.my_map AndroidRuntime java.lang.RuntimeException: Unable to start activity ComponentInfo{com.appeal.my_map/com.appeal.my_map.MainActivity}: java.lang.NullPointerException 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2343) 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395) 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread.access$600(ActivityThread.java:162) 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364) 7561 com.appeal.my_map AndroidRuntime at android.os.Handler.dispatchMessage(Handler.java:107) 7561 com.appeal.my_map AndroidRuntime at android.os.Looper.loop(Looper.java:194) 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread.main(ActivityThread.java:5371) 7561 com.appeal.my_map AndroidRuntime at java.lang.reflect.Method.invokeNative(Native Method) 7561 com.appeal.my_map AndroidRuntime at java.lang.reflect.Method.invoke(Method.java:525) 7561 com.appeal.my_map AndroidRuntime at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 7561 com.appeal.my_map AndroidRuntime at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 7561 com.appeal.my_map AndroidRuntime at dalvik.system.NativeStart.main(Native Method) 7561 com.appeal.my_map AndroidRuntime Caused by: java.lang.NullPointerException 7561 com.appeal.my_map AndroidRuntime at com.appeal.my_map.MainActivity.marker(MainActivity.java:41) 7561 com.appeal.my_map AndroidRuntime at com.appeal.my_map.MainActivity.onCreate(MainActivity.java:25) 7561 com.appeal.my_map AndroidRuntime at android.app.Activity.performCreate(Activity.java:5122) 7561 com.appeal.my_map AndroidRuntime at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081) 7561 com.appeal.my_map AndroidRuntime at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307) 7561 com.appeal.my_map AndroidRuntime ... 11 more </code></pre> <p>please correct me where am going wrong... Thank you...!</p>
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    1. PTQuestion
    1. This table or related slice is empty.
    1. USYograj Shinde
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    1. This table or related slice is empty.
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    1. PO
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      1. POI want to add marker on map and zoom to that location
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POI want to add marker on map and zoom to that location
      1. This table or related slice is empty.
      1. VTUpMod
    1. COYour log says you are getting NullPointerException at line no 41. See what is causing the error
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      1. USVamshi
    2. CODid you fix the problem?
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      1. POI want to add marker on map and zoom to that location
      1. USA.S.
    3. COyes, please read answer given below by Raghunandan for solution
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      1. POI want to add marker on map and zoom to that location
      1. USYograj Shinde
 

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