title: Unable to initiate activities from Navigation drawer
body: <p>I was following the android navigation drawer guide and all went well until i tried to initiate an activity from the items on the list. The drawer seems to be working fine as the test toast message i created is executed when the first item is clicked however when clicking the second item the app crashes.</p>
  
  <p>Can anyone tell me what the problem is or can anyone please point me in the right direction..</p>
  
  <p>Here's my Mainactivity:</p>
  
  <pre><code>public class MainActivity extends Activity {
  
  private DrawerLayout mDrawerLayout;
  private ListView mDrawerList;
  private ActionBarDrawerToggle mDrawerToggle;
  
  private CharSequence mDrawerTitle;
  private CharSequence mTitle;
  private String[] mGalaxyTitles;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      mTitle = mDrawerTitle = getTitle();
      mGalaxyTitles = getResources().getStringArray(R.array.list_items);
      mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
      mDrawerList = (ListView) findViewById(R.id.left_drawer);
  
  
      mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
      mDrawerList.setAdapter(new ArrayAdapter&lt;String&gt;(this,
              R.layout.drawer_list_item, mGalaxyTitles));
      mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
      if (savedInstanceState == null) {
          selectItem(0);}
  
      getActionBar().setDisplayHomeAsUpEnabled(true);
      getActionBar().setHomeButtonEnabled(true);
  
  
      mDrawerToggle = new ActionBarDrawerToggle(
              this,                 
              mDrawerLayout,         
              R.drawable.ic_drawer,  
              R.string.hello_world,  
              R.string.hello_world  
              ) {
          public void onDrawerClosed(View view) {
              getActionBar().setTitle(mTitle);
              invalidateOptionsMenu(); 
          }
  
          public void onDrawerOpened(View drawerView) {
              getActionBar().setTitle(mDrawerTitle);
              invalidateOptionsMenu(); 
          }
      };
      mDrawerLayout.setDrawerListener(mDrawerToggle);
  
    /** if (savedInstanceState == null) {
          selectItem(0);
      }**/
  }
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.main, menu);
      return super.onCreateOptionsMenu(menu);
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
  
      if (mDrawerToggle.onOptionsItemSelected(item)) {
          return true;
      }
      return super.onOptionsItemSelected(item);}
  
  
  private class DrawerItemClickListener implements ListView.OnItemClickListener {
  
      public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) {
  
    switch(position) {
      case 0:
          Toast.makeText(getApplicationContext(), "Some Activities MAY take time to load. Please be Patient.", Toast.LENGTH_LONG).show();   
          //Intent a = new Intent(MainActivity.this, Dev_team.class);
              //startActivity(a);
      break;
      case 1:
          Toast.makeText(getApplicationContext(), "Some Activities MAY take time to load. Please be Patient.", Toast.LENGTH_LONG).show(); 
          Intent a = new Intent(getBaseContext(), dev.class);
           startActivity(a);
             break;
      default:
      }
      }
      }
  
  
  public void selectItem(int position) {
          switch(position) {
      case 0:
          Toast.makeText(getApplicationContext(), "Some Activities MAY take time to load. Please be Patient.", Toast.LENGTH_LONG).show();   
          //Intent a = new Intent(MainActivity.this, Dev_team.class);
              //startActivity(a);
      break;
      case 1:
          setContentView(R.layout.dev_team);
             break;
      default:
          }
      }
  
  
  @Override
  public void setTitle(CharSequence title) {
      mTitle = title;
      getActionBar().setTitle(mTitle);
  }
  
  
  
  @Override
  protected void onPostCreate(Bundle savedInstanceState) {
      super.onPostCreate(savedInstanceState);
  
      mDrawerToggle.syncState();
  }
  
  @Override
  public void onConfigurationChanged(Configuration newConfig) {
      super.onConfigurationChanged(newConfig);
  
      mDrawerToggle.onConfigurationChanged(newConfig);
  }
  
  
  /**public static class GalaxyFragment extends Fragment {
      public static final String ARG_Galaxy_NUMBER = "Galaxy_number";
  
      public GalaxyFragment() {
  
      }
  
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
              Bundle savedInstanceState) {
          View rootView = inflater.inflate(R.layout.fragment_Galaxy, container, false);
          int i = getArguments().getInt(ARG_Galaxy_NUMBER);
          String Galaxy = getResources().getStringArray(R.array.list_items)[i];
  
          int imageId = getResources().getIdentifier(Galaxy.toLowerCase(Locale.getDefault()),
                          "drawable", getActivity().getPackageName());
          ((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
          getActivity().setTitle(Galaxy);
          return rootView;
      }**/
  }
  </code></pre>
  
  <p>And here is the activity_main.xml</p>
  
  <pre><code>&lt;android.support.v4.widget.DrawerLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/drawer_layout"
  android:layout_width="match_parent"
  android:layout_height="match_parent"&gt;
  &lt;!-- The main content view --&gt;
  &lt;RelativeLayout
  android:layout_width="match_parent"
  android:layout_height="match_parent" &gt;
  &lt;TextView
      android:id="@+id/textView2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_below="@+id/textView1"
      android:layout_centerHorizontal="true"
      android:layout_marginTop="30dp"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:text="@string/hello_world"
      android:textSize="18sp" /&gt;
  &lt;/RelativeLayout&gt;
  &lt;!-- The navigation drawer --&gt;
  &lt;ListView android:id="@+id/left_drawer"
      android:layout_width="240dp"
      android:layout_height="match_parent"
      android:layout_gravity="start"
      android:choiceMode="singleChoice"
      android:divider="@android:color/transparent"
      android:dividerHeight="0dp"
      android:background="#111"/&gt;
  &lt;/android.support.v4.widget.DrawerLayout&gt;
  </code></pre>
  
  <p>And here is the dev.java</p>
  
  <pre><code>public class dev extends MainActivity{
  public void onCreate(Bundle savedInstanceState){
      setContentView(R.layout.dev_team);
  }
  
  }
  </code></pre>
  
  <p>As suggested by Pavel Dudka, Here is the logcat</p>
  
  <pre><code>    06-25 12:05:12.815: E/Trace(778): error opening trace file: No such file or directory (2)
  06-25 12:05:13.736: D/dalvikvm(778): GC_FOR_ALLOC freed 100K, 8% free 2668K/2888K, paused 174ms, total 182ms
  06-25 12:05:13.746: I/dalvikvm-heap(778): Grow heap (frag case) to 3.792MB for 1127536-byte allocation
  06-25 12:05:13.865: D/dalvikvm(778): GC_FOR_ALLOC freed 2K, 6% free 3767K/3992K, paused 120ms, total 120ms
  06-25 12:05:13.925: D/dalvikvm(778): GC_CONCURRENT freed 1K, 5% free 3800K/3992K, paused 12ms+12ms, total 54ms
  06-25 12:05:14.296: I/Choreographer(778): Skipped 33 frames!  The application may be doing too much work on its main thread.
  06-25 12:05:14.366: D/gralloc_goldfish(778): Emulator without GPU emulation detected.
  06-25 12:05:24.766: D/AndroidRuntime(778): Shutting down VM
  06-25 12:05:24.766: W/dalvikvm(778): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
  06-25 12:05:24.786: E/AndroidRuntime(778): FATAL EXCEPTION: main
  06-25 12:05:24.786: E/AndroidRuntime(778): android.content.ActivityNotFoundException: Unable to find explicit activity class    {com.example.navdraw/com.example.navdraw.dev}; have you declared this activity in your AndroidManifest.xml?
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Activity.startActivityForResult(Activity.java:3370)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Activity.startActivityForResult(Activity.java:3331)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Activity.startActivity(Activity.java:3566)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.Activity.startActivity(Activity.java:3534)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at com.example.navdraw.MainActivity$DrawerItemClickListener.onItemClick (MainActivity.java:129)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.widget.AdapterView.performItemClick(AdapterView.java:298)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.widget.AbsListView.performItemClick(AbsListView.java:1100)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.widget.AbsListView$1.run(AbsListView.java:3423)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.os.Handler.handleCallback(Handler.java:725)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.os.Handler.dispatchMessage(Handler.java:92)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.os.Looper.loop(Looper.java:137)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at android.app.ActivityThread.main(ActivityThread.java:5041)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at java.lang.reflect.Method.invokeNative(Native Method)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at java.lang.reflect.Method.invoke(Method.java:511)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  06-25 12:05:24.786: E/AndroidRuntime(778):  at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>If there is something Obvious that I am missing please tell me because I am pretty new to app developing community.</p>
  
  <p>Any help is greatly Appreciated.</p>
  
  <p>Thank You!</p>