Android activity as dialog, but without a title bar

Question

I have an activity that has the following set as theme:

android:theme=\"@android:style/Theme.Dialog\"

However, there is a title bar in the

Answer 1

You can define your own theme:

<style name="NoTitleDialog" parent="@android:style/Theme.Dialog">
    <item name="android:windowNoTitle">true</item>
</style>

(Tip of the hat to @Rehan) If you're using the compatibility library, you should pick an AppCompat parent theme and leave off the android: prefix. For example:

<style name="NoTitleDialog" parent="@style/Theme.AppCompat.Dialog">
    <item name="windowNoTitle">true</item>
</style>

Answer 2

for dialogs, you can do it like:

Dialog dialog = new Dialog(context);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

Answer 3

This works for me, may it helps someone too :

style.xml

<style name="NoTitleActivityDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="windowNoTitle">true</item>
</style>

AndroidManifest.xml

   <activity
        android:name=".DialogActivity"
        android:theme="@style/NoTitleActivityDialog"/>