Android - Remove top banner in new application?

Is there a way to remove the banner that appears at the top of my new Android application that has the开发者_如何学Python application name in it? I think I need to do something in the AndroidManifest.xml file, but I'm not sure what to do.

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This is actually in the Common Tasks and How to Do Them under the section "Configuring General Window Properties."

[update] as per the comments

Either call...

requestWindowFeature(Window.FEATURE_NO_TITLE);

Or add the following to your Android manifest file...

<application android:icon="@drawable/icon" android:theme="@android:style/Theme.NoTitleBar">

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In file Style.xml:

(App--->src--->main--->res->values--->styles.xml) changes the < resources> to :

<resources>

    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">

    </style>

</resources>