To remove the bar that appears at the top of your activity, modify your AndroidManifest.xml document. Foreach activity, add the line:
android:theme="@android:style/ThemeNoTitleBar.Fullscreen"Making the result look like:
<activity android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
