title: Errors in android application(main cannot be resolved or is not a field/wglGetExtensionsStringARB' error running map application in Android Emulator)
body: <p>1.When Iam Importing an existing project  or creating a new project displaying an error :
              R cannot be resolved to a variable,
              after importing R seems it is unable to access the xml layout files
              tries fixing this issue </p>
  
  <pre><code>        http://stackoverflow.com/questions/5143369/main-cannot-be-resolved-or-is-not-a-field
  </code></pre>
  
  <p>2.At the same time on ANOTHER MACHINE
              while running my application ".apk file" is getting created but unble to reflect the output on the emulator</p>
  
  <pre><code>      [2012-10-04 15:24:29 - HelloAndroid] Android Launch!
  [2012-10-04 15:24:29 - HelloAndroid] adb is running normally.
  [2012-10-04 15:24:29 - HelloAndroid] No Launcher activity found!
  [2012-10-04 15:24:29 - HelloAndroid] The launch will only sync the application package on the device!
  [2012-10-04 15:24:29 - HelloAndroid] Performing sync
  [2012-10-04 15:24:29 - HelloAndroid] Automatic Target Mode: launching new emulator with compatible AVD 'android2.1'
  [2012-10-04 15:24:29 - HelloAndroid] Launching a new emulator with Virtual Device 'android2.1'
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] Failed to create Context 0x3005
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] could not get wglGetExtensionsStringARB
  [2012-10-04 15:24:37 - Emulator] emulator: WARNING: Could not initialize OpenglES emulation, using software renderer.
  [2012-10-04 15:24:37 - Emulator] emulator: warning: opening audio input failed
  [2012-10-04 15:24:37 - Emulator]
  </code></pre>
  
  <p>Home Screen-></p>
  
  <pre><code>package com.example.new_xyz_fertilizer;
  
  import android.app.Activity;
  import android.os.Bundle;
  
  
  public class Home extends Activity {
  
      public void onCreate(Bundle HomeBundle){
          super.onCreate(HomeBundle);
          setContentView(R.layout.home);
  
      }
  
  
  }
  </code></pre>
  
  <p>and in xml layout file --> home.xml</p>
  
  <pre><code>?xml version="1.0" encoding="utf-8"?&gt;
  
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:orientation="horizontal"
      android:background="@drawable/BG01"
      &gt;
  
  
      &lt;LinearLayout
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="bottom"
          android:gravity="bottom"
          &gt;
          &lt;ImageView
              android:id="@+id/home"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/home_s"/&gt;
          &lt;ImageView
              android:id="@+id/nc"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/nc_s"
              /&gt;
          &lt;ImageView
              android:id="@+id/locncon"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/locncon_s"
             /&gt;
          &lt;ImageView
              android:id="@+id/ft"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/ft_s"
              /&gt;
  
            &lt;ImageView
              android:id="@+id/csf"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/csf_s"
              /&gt;
      &lt;/LinearLayout&gt;
  
  
  
  &lt;/LinearLayout&gt;       
  
  
  Thanks in advance
  </code></pre>