Set FAB (Floating Action Button) above keyboard

Turns out it's pretty easy,

• Add android:windowSoftInputMode="adjustResize" to your activity in manifest
• Make sure your root view in layout xml, has android:fitsSystemWindows="true" property

If you want to see FloatingActionBar move above keyboard, you should:

1) Insert FloatingActionBar inside CoordinatorLayout:

<androidx.coordinatorlayout.widget.CoordinatorLayout
    android:id="@+id/coordinator"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <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="16dp"
        android:src="@drawable/ic_img" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>

2) Add in root View (where your FAB exist) code:

android:fitsSystemWindows="true".

For example:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:fitsSystemWindows="true"
    android:orientation="vertical"
    tools:context=".AddFilm">

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/coordinator"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <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="16dp"
            android:src="@drawable/ic_img" />

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

</LinearLayout>

3) Add next code in AndroidManifest.xml to your Activity:

android:windowSoftInputMode="adjustResize"

For example:

<activity
        android:name=".MainActivity"
        android:windowSoftInputMode="adjustResize"/>