title: Android app crashes upon start-up
body: <p>I am beginning to learn how to construct android apps. I was trying to add buttons to the action bar when the app began crashing. I will provide the MainActivity.java content as well as the logcat content.</p>
  
  <pre><code>logcat:
  07-04 13:31:15.901: E/AndroidRuntime(14357): FATAL EXCEPTION: main
  07-04 13:31:15.901: E/AndroidRuntime(14357): android.content.res.Resources$NotFoundException: Resource ID #0x0
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.content.res.Resources.getValue(Resources.java:1981)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.content.res.Resources.loadXmlResourceParser(Resources.java:3187)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.content.res.Resources.getLayout(Resources.java:1797)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v7.internal.view.SupportMenuInflater.inflate(SupportMenuInflater.java:115)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.example.test.MainActivity.onCreateOptionsMenu(MainActivity.java:32)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.app.Activity.onCreatePanelMenu(Activity.java:2578)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:224)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v7.app.ActionBarActivity.superOnCreatePanelMenu(ActionBarActivity.java:232)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v7.app.ActionBarActivityDelegateICS.onCreatePanelMenu(ActionBarActivityDelegateICS.java:147)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v7.app.ActionBarActivity.onCreatePanelMenu(ActionBarActivity.java:199)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.onCreatePanelMenu(ActionBarActivityDelegateICS.java:285)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:507)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:934)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:292)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:791)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.view.Choreographer.doCallbacks(Choreographer.java:591)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.view.Choreographer.doFrame(Choreographer.java:560)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:777)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.os.Handler.handleCallback(Handler.java:730)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.os.Handler.dispatchMessage(Handler.java:92)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.os.Looper.loop(Looper.java:137)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at android.app.ActivityThread.main(ActivityThread.java:5455)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at java.lang.reflect.Method.invokeNative(Native Method)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at java.lang.reflect.Method.invoke(Method.java:525)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
  07-04 13:31:15.901: E/AndroidRuntime(14357):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
  </code></pre>
  
  <p>MainActivity.java:</p>
  
  <pre><code>public class MainActivity extends ActionBarActivity {
  
      static final String EXTRA_MESSAGE = "com.example.test.MESSAGE";
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          if (savedInstanceState == null) {
              getSupportFragmentManager().beginTransaction()
                      .add(R.id.container, new PlaceholderFragment()).commit();
          }
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu items for use in the action bar
          MenuInflater inflater = getMenuInflater();
          inflater.inflate(R.menu.main_activity_actions, menu);
          return super.onCreateOptionsMenu(menu);
      }
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
          // Handle action bar item clicks here. The action bar will
          // automatically handle clicks on the Home/Up button, so long
          // as you specify a parent activity in AndroidManifest.xml.
          int id = item.getItemId();
          if (id == R.id.action_settings) {
              return true;
          }
          return super.onOptionsItemSelected(item);
      }
  
      public void sendMessage(View view) {
          Intent intent = new Intent(this, DisplayMessageActivity.class);
          EditText editText = (EditText) findViewById(R.id.edit_message);
          String message = editText.getText().toString();
          intent.putExtra(EXTRA_MESSAGE, message);
          startActivity(intent);
      }
  
      /**
       * A placeholder fragment containing a simple view.
       */
      public static class PlaceholderFragment extends Fragment {
  
          public PlaceholderFragment() {
          }
  
          @Override
          public View onCreateView(LayoutInflater inflater, ViewGroup container,
                  Bundle savedInstanceState) {
              View rootView = inflater.inflate(R.layout.fragment_main, container,
                      false);
              return rootView;
          }
  
      }
  
  }
  </code></pre>