FloatingActionButton warning in logcat: Setting a custom background is not supported

[adil-hussain-84]

I'm using the latest version of the com.google.android.material:material library (i.e. 1.1.0-alpha03) and I have an app theme defined as follows...

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <item name="colorAccent">@color/green</item>
    <item name="colorControlHighlight">@color/green</item>
    <item name="colorPrimary">@color/green</item>
    <item name="colorPrimaryDark">@color/dark_green</item>
    <item name="colorOnPrimary">@color/white</item>
    <item name="colorSecondary">@color/green</item>
    <item name="colorOnSecondary">@color/white</item>
</style>

... and a FloatingActionButton defined as follows...

<com.google.android.material.floatingactionbutton.FloatingActionButton
    android:id="@+id/floatingActionButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:fabSize="normal"
    app:srcCompat="@drawable/icon_plus" />

... the FloatingActionButton is displaying perfectly fine in my app but I'm seeing the following message in Logcat...

I/FloatingActionButton: Setting a custom background is not supported.

... I'm not setting a background on the FloatingActionButton anywhere in my app.

Is it something I've done incorrectly in setting up the FloatingActionButton to trigger this message or is it a bug?

[ymarian]

Hi good catch, this is because we are setting a background in Widget.Design.FloatingActionButton.
you can add android:background="@null" to your fab or safely ignore this warning. I'll see if we can set that in the default style.