Android graphical layout has a default actionbar shown in some cases

Question

In the xml graphical layout of my android application there is a actionbar shown in one of my android studio projects and not in others. Out of curiosity i would like to know the reason behind this. I don't see any changes in the themes of either of the layouts and activities.

Something like this is shown :

PS: the part above the dotted line is the actionbar. I want it removed somehow. It's not there in any of my other Android Studio projects.

Answer 1

Try adding this in your styles.xml

<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>

and add AppTheme.NoAction to your activity in Manifest