Fab to CircularRevealFrameLayout example
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.google.android.material.circularreveal.CircularRevealLinearLayout
android:id="@+id/dial"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_gravity="bottom|center_horizontal"
android:visibility="invisible"
android:layout_marginBottom="16dp"
app:layout_anchor="@id/fab"
app:layout_anchorGravity="top|center_horizontal"
android:background="@color/colorPrimary"
app:layout_behavior="com.google.android.material.transformation.FabTransformationSheetBehavior">
<ImageButton
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/back"/>
</com.google.android.material.circularreveal.CircularRevealLinearLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:backgroundTint="@color/colorPrimary"
app:srcCompat="@android:drawable/ic_dialog_email"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>