CollapsingToolbarLayout not collapsing when softkeyboard is visible

I used code lines are below in the xml file and it worked this way with both softkeyboard is visible and gone

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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.support.design.widget.CoordinatorLayout
            android:id="@+id/coordinator_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fillViewport="true">

        <android.support.design.widget.AppBarLayout
                android:id="@+id/appbar_layout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fitsSystemWindows="true">

            <android.support.design.widget.CollapsingToolbarLayout
                    android:id="@+id/expanded_collapsing_toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="120dp"
                    app:layout_scrollFlags="scroll|exitUntilCollapsed">

                <android.support.v7.widget.Toolbar
                        android:id="@+id/expanded_toolbar"
                        android:layout_width="match_parent"
                        android:layout_height="?attr/actionBarSize"
                        app:layout_collapseMode="pin"/>

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

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

        <android.support.v4.widget.NestedScrollView
                android:id="@+id/nested_scrollview"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fillViewport="true"
                app:layout_anchor="@id/appbar_layout"
                app:layout_anchorGravity="bottom"
                app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <android.support.constraint.ConstraintLayout
                    android:id="@+id/container"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                <android.support.v7.widget.AppCompatTextView
                        android:id="@+id/title"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:paddingStart="32dp"
                        android:paddingEnd="0dp"
                        android:text="Finances"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent"/>

                <android.support.v7.widget.AppCompatEditText
                        android:id="@+id/edit_text"
                        android:layout_width="0dp"
                        android:layout_height="56dp"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@id/title"/>

                <android.support.v7.widget.AppCompatTextView
                        android:id="@+id/details"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:text="DETAILS TODO"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@id/edit_text"/>

                <android.support.v7.widget.RecyclerView
                        android:id="@+id/finances_list"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:orientation="horizontal"
                        app:layoutManager="android.support.v7.widget.LinearLayoutManager"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@id/details"/>

                <android.support.v7.widget.AppCompatButton
                        android:id="@+id/button_see_all"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="See All"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintTop_toBottomOf="@id/finances_list"
                        app:layout_constraintVertical_bias="1.0"/>

            </android.support.constraint.ConstraintLayout>

        </android.support.v4.widget.NestedScrollView>

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

</RelativeLayout>

Also you can check in your activity AppBarLayout collapse/expand process with this listener:

appbar_layout.addOnOffsetChangedListener(object : AppBarLayout.OnOffsetChangedListener {
            override fun onOffsetChanged(p0: AppBarLayout?, p1: Int) {
                if (Math.abs(p1) - appbar_layout.totalScrollRange == 0) {
                    Log.d("tag", "Collapsed")
                } else {
                    Log.d("tag", "Expanded")
                }
            }
        })

I think it cause because of you're using AppBarLayout in a custom xml.

AppBarLayout must be a direct child of CoordinatorLayout for scrolling and collapsing of the layout to work as you expect. (See AppBarLayout documentation.)

This view depends heavily on being used as a direct child within a CoordinatorLayout. If you use AppBarLayout within a different ViewGroup, most of it's functionality will not work.

Here is what your layout looks like as currently coded. (This is from the Layout Inspector.)

As you can see, AppBarLayout is not a direct child of CoordinatorLayout but is a child of ExpandedToolbar which is, in itself, an AppBarLayout.

To fix this, you will need to change expanded_toolbar.xml to the following:

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <!--<android.support.design.widget.AppBarLayout-->
    <!--android:id="@+id/appbar_layout"-->
    <!--android:layout_width="match_parent"-->
    <!--android:layout_height="wrap_content"-->
    <!--android:fitsSystemWindows="true">-->

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/expanded_collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="120dp"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <android.support.v7.widget.Toolbar
            android:id="@+id/expanded_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_collapseMode="pin" />

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

    <!--</android.support.design.widget.AppBarLayout>-->
</merge>

As you can see, I have removed AppBarLayout by commenting it out. Now, when we run the app, we see the following hierarchy:

Here, you can see that ExpandedToolbar which is really an AppBarLayout is a direct child of the CoordinatorLayout. This works. Here is a visual. I didn't implement the entire custom layout - just enough for demo purposes.

Here is the updated main layout:

activity_main.xml

<RelativeLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/coordinator_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true">

        <com.example.customviewtoolbar.ExpandedToolbar
            android:id="@+id/expandable_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:toolbarNavColor="?attr/NavigationIconColor"
            app:toolbarNavIcon="?attr/NavigationUpArrow"
            app:toolbarTitle="My Finances"
            app:toolbarTitleColor="?attr/NavigationTitleColor" />

        <android.support.v4.widget.NestedScrollView
            android:id="@+id/nested_scrollview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <android.support.constraint.ConstraintLayout
                android:id="@+id/container"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <android.support.v7.widget.AppCompatTextView
                    android:id="@+id/title"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:paddingStart="32dp"
                    android:paddingEnd="0dp"
                    android:text="@string/finances"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <android.support.v7.widget.AppCompatEditText
                    android:id="@+id/edit_text"
                    android:layout_width="0dp"
                    android:layout_height="56dp"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/title" />

                <android.support.v7.widget.AppCompatTextView
                    android:id="@+id/details"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:text="DETAILS TODO"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/edit_text" />

                <android.support.v7.widget.RecyclerView
                    android:id="@+id/finances_list"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal"
                    app:layoutManager="android.support.v7.widget.LinearLayoutManager"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/details" />

                <android.support.v7.widget.AppCompatButton
                    android:id="@+id/button_see_all"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="See All"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintTop_toBottomOf="@id/finances_list"
                    app:layout_constraintVertical_bias="1.0" />

            </android.support.constraint.ConstraintLayout>

        </android.support.v4.widget.NestedScrollView>

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

</RelativeLayout>

As a side note, I removed the anchor-related tags and android:fillViewport="true" from the NestedScrollView since they are not really needed and prevented the layout inspector from working.

You could always just not use the custom view, but I assume that you want it for convenience.

Here is the mock-up of ExpandedToolbar that I used for demo purposes.

ExpandedToolbar.java

public class ExpandedToolbar extends AppBarLayout {
    public ExpandedToolbar(Context context) {
        super(context);
        init();
    }

    public ExpandedToolbar(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
        TypedArray a = context.getTheme().obtainStyledAttributes(
                attrs,
                R.styleable.MyToolbar,
                0, 0);

        try {
            String title = a.getString(R.styleable.MyToolbar_toolbarTitle);
            ((Toolbar) findViewById(R.id.expanded_toolbar)).setTitle(title);
        } finally {
            a.recycle();
        }
    }

    private void init() {
        inflate(getContext(), R.layout.expanded_toolbar, this);
    }
}