<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/fabCoordinator"
    tools:context=".features.tasklist.TaskFragment">
    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/srTasks"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rvTask"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    </android.support.v4.widget.SwipeRefreshLayout>
    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fabAddTask"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="0dp"
        android:layout_marginEnd="16dp"
        android:background="@color/colorAccent"
        android:src="@drawable/ic_plus"
        app:layout_anchor="@id/rvTask"
        android:layout_gravity="bottom|end"
        app:layout_anchorGravity="bottom|right|end"
        app:layout_behavior="com.example.qitment.todomanager.features.tasklist.ScrollAwareFABBehavior"
    />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/layoutFlower"
        android:orientation="vertical">
    <ImageView
        android:id="@+id/picFlower"
        android:layout_width="171dp"
        android:layout_height="143dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="40dp"
        android:src="@mipmap/pic_flower"/>
    <TextView
        android:layout_marginTop="36dp"
        android:gravity="center_horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:textSize="16sp"
        android:textColor="@color/black_text_color"
        android:text="@string/you_do_all_label" />
    <TextView
        android:layout_marginTop="8dp"
        android:gravity="center_horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:textSize="14sp"
        android:textColor="@color/grey_text_color"
        android:text="@string/have_a_nice_time" />

    </LinearLayout>

</android.support.design.widget.CoordinatorLayout>





public class ScrollAwareFABBehavior extends FloatingActionButton.Behavior {
    public ScrollAwareFABBehavior(Context context, AttributeSet attrs) {
        // This is mandatory if we're assigning the behavior straight from XML
        super();
    }

    @Override
    public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child, final View directTargetChild, final View target, final int nestedScrollAxes) {
        // Ensure we react to vertical scrolling
        return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
                || super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
    }

    @Override
    public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child, final View target, final int dxConsumed, final int dyConsumed,final int dxUnconsumed, final int dyUnconsumed) {
        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
        if (dyConsumed > 0 && child.getVisibility() == View.VISIBLE) {
            // User scrolled down and the FAB is currently visible -> hide the FAB
            child.hide();
        } else if (dyConsumed < 0 && child.getVisibility() != View.VISIBLE) {
            // User scrolled up and the FAB is currently not visible -> show the FAB
            child.show();
        }
    }
}