Android Example AppCompat with ToolBar - minimal example

Erel · May 24, 2017

In most cases AppCompat is no longer needed and will only make things more complicated.
B4XPages example with dynamic menu: https://www.b4x.com/android/forum/threads/b4x-menu-badges.133301/

The project attached uses the powerful AppCompat library to replace the built-in ActionBar with a more robust ToolBar.

The NavigationItemClick event is raised when the icon is clicked.

You can set ToolbarHelper.ShowUpIndicator = True to show an up arrow instead. It will raise the same event.

You can change the toolbar color in the manifest editor.

Sliding side menu + dynamic menu items: https://www.b4x.com/android/forum/threads/appcompat-with-toolbar-minimal-example.79896/#post-509530

Example based on B4ADrawer: https://www.b4x.com/android/forum/threads/class-b4adrawer-sliding-drawer.97828/#post-616518

Edit: depending on your Android SDK version, you might get this error:

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/arch/core/executor/ArchTaskExecutor;

The solution is to add this line in the main activity:

B4X:

#AdditionalJar: androidx.arch.core:core-runtime

DonManfred · Dec 5, 2017

You should ALWAYS(!!) create a new Thread for ANY question.

Check the Appcompat tutorial on how to setup your App. CAREFULLY.
Seems you did forget something.

Erel · Jan 9, 2018

You should never post questions in existing threads. Please start a new thread instead.

Erel · Jan 30, 2018

Thread is locked. Please start a new thread for any question you have.

Erel · Jul 6, 2025

Updated first example with targetSdkVersion 35. The updated manifest:

B4X:

SetApplicationAttribute(android:theme, "@style/MyAppTheme")

CreateResource(values, theme.xml,
<resources>
    <style name="MyAppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">#0098FF</item>
        <item name="colorPrimaryDark">#007CF5</item>
        <item name="colorAccent">#AAAA00</item>
        <item name="windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="android:windowOptOutEdgeToEdgeEnforcement">true</item>
    </style>
</resources>
)

Android Example AppCompat with ToolBar - minimal example

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Android Example AppCompat with ToolBar - minimal example

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