title: The simplest HELLO WORLD is not working on the Emulator
body: <p>I just new in android development. In fact I started it just earlier this afternoon. I follow the instruction in this link. </p>
  
  <p><a href="https://developer.android.com/training/basics/firstapp/creating-project.html" rel="nofollow">https://developer.android.com/training/basics/firstapp/creating-project.html</a></p>
  
  <p>I just rename it as hello2. </p>
  
  <p>Everything seems perfect except when I was trying to run it in AVD. My logcat keeps popping some errors. And the emulator display "Unfortunately, hello2 has stopped."</p>
  
  <p>can somebody out there help me?</p>
  
  <p>this is my java file</p>
  
  <pre><code>package com.example.hello2;
  
  import android.support.v7.app.ActionBarActivity;
  import android.os.Bundle;
  import android.view.Menu;
  import android.view.MenuItem;
  
  public class MainActivity extends ActionBarActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
      }
  
      @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;
      }
  
      @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);
      }
  }
  </code></pre>
  
  <p>this is my manifest file</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.hello2"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;uses-sdk
          android:minSdkVersion="8"
          android:targetSdkVersion="21" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" &gt;
          &lt;activity
              android:name=".MainActivity"
              android:label="@string/app_name" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>and this is my logcat:</p>
  
  <pre><code>07-20 13:22:25.760: W/dalvikvm(960): threadid=1: thread exiting with uncaught exception (group=0xb3af1d70)
  07-20 13:22:25.780: E/AndroidRuntime(960): FATAL EXCEPTION: main
  07-20 13:22:25.780: E/AndroidRuntime(960): Process: com.example.hello2, PID: 960
  07-20 13:22:25.780: E/AndroidRuntime(960): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hello2/com.example.hello2.MainActivity}: android.util.AndroidRuntimeException: You cannot combine swipe dismissal and the action bar.
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2197)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2258)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread.access$800(ActivityThread.java:138)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1209)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.os.Handler.dispatchMessage(Handler.java:102)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.os.Looper.loop(Looper.java:136)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread.main(ActivityThread.java:5026)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at java.lang.reflect.Method.invokeNative(Native Method)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at java.lang.reflect.Method.invoke(Method.java:515)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at dalvik.system.NativeStart.main(Native Method)
  07-20 13:22:25.780: E/AndroidRuntime(960): Caused by: android.util.AndroidRuntimeException: You cannot combine swipe dismissal and the action bar.
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:275)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.policy.impl.PhoneWindow.generateLayout(PhoneWindow.java:2872)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.policy.impl.PhoneWindow.installDecor(PhoneWindow.java:3129)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:303)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.Activity.setContentView(Activity.java:1930)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.support.v7.app.ActionBarActivity.superSetContentView(ActionBarActivity.java:217)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.support.v7.app.ActionBarActivityDelegateICS.setContentView(ActionBarActivityDelegateICS.java:110)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:77)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at com.example.hello2.MainActivity.onCreate(MainActivity.java:13)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.Activity.performCreate(Activity.java:5242)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
  07-20 13:22:25.780: E/AndroidRuntime(960):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2161)
  07-20 13:22:25.780: E/AndroidRuntime(960):  ... 11 more
  </code></pre>
  
  <p>I hope somebody can help me..</p>
  
  <p>PS: sorry for the bad English.</p>