custom_toast.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/custom_toast_container"
    android:orientation="horizontal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="8dp"
    android:background="#DAAA"
    >
    <ImageView android:src="@drawable/ic_launcher_foreground"
        android:layout_width="44dp"
        android:layout_height="44dp"
        android:layout_marginRight="8dp"
        />
    <TextView android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#FFF"
        android:layout_marginRight="8dp"
        android:text="This is a toast"
        android:layout_gravity="center_vertical"
        />
</LinearLayout>