Hello,
Open your manifest file and find newly added activity.
Add Filter inside it, whole code should look like this:
<activity>
android:name=".YOUR_NEW_ACTIVITY_NAME"
android:label="@string/title_activity_new"
android:theme="@android:style/Theme.Holo.Light.NoActionBar.Fullscreen" >
<intent-filter android:label="@string/app_name" xmlns:android="#unknown">
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>