NestedScrollView cut/overlay bottom of nested Fragments

Question

I have problem with NestedScrollView, because it cuts bottom of view.

I have FragmentA with schema:

<RelativeLayout>
<android.support.design.widget.CoordinatorLayout>
    <android.support.design.widget.AppBarLayout>
        <android.support.design.widget.CollapsingToolbarLayout>
            <ImageView/>
            <android.support.v7.widget.Toolbar/>
        </android.support.design.widget.CollapsingToolbarLayout>
    </android.support.design.widget.AppBarLayout>
    <android.support.v4.widget.NestedScrollView>
        <LinearLayout>
            <FrameLayout> 
                <!-- fragment added dynamically-->
            </FrameLayout>
            <FrameLayout>
                <!-- fragment added dynamically-->
            </FrameLayout>
            <FrameLayout>
                <!-- fragment added dynamically-->
            </FrameLayout>
        </LinearLayout>
    </android.support.v4.widget.NestedScrollView>
    <android.support.design.widget.FloatingActionButton/>
</android.support.design.widget.CoordinatorLayout>

I am adding dinamically fragments to each FrameLayout.

I did SS how it look like when I run app first time: Screen at first time I put padding to every layout to see what is happend. green is CoordinatorLayout, red is NestedScrollView, orangeis LinearLayout inside NestedScrollView.

Now I am replace FragmentA with FragmentB and again comeback to FragmentA and I have something like this: wrong dispaly

Somebody knows what I am doing wrong?

This is my whole layout for FragmentA:

<RelativeLayout 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="match_parent"
android:orientation="vertical">

<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorP"
    android:padding="5dp"
    android:layout_above="@+id/przyciski">

    <android.support.design.widget.AppBarLayout

        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="160dp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginBottom="25dp"
            app:expandedTitleMarginEnd="0dp"
            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/header"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:scaleType="centerCrop"
                app:layout_collapseMode="parallax"
                android:contentDescription="descp" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/anim_toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

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

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

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/scrollableview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorRedCalendar"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:padding="5dp">

        <LinearLayout
            android:gravity="center"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/colorAccent"
            android:orientation="vertical"
            android:padding="5dp">

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/frameForInfo"
                android:minHeight="100dp"
                android:focusableInTouchMode="true">

            </FrameLayout>

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/frameForCalendar"
                android:minHeight="100dp"
                android:focusableInTouchMode="true">

            </FrameLayout>

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/frameForGraph"
                android:minHeight="100dp"
                android:focusableInTouchMode="true">
            </FrameLayout>

        </LinearLayout>

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

    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/fab_margin"
        android:clickable="true"
        app:layout_anchor="@+id/appbar"
        app:layout_anchorGravity="bottom|right|end"
        app:backgroundTint="@color/colorAccent"
        android:id="@+id/floatingButtonLog" />

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

EDIT: I compile with:

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.1'
compile 'com.android.support:support-v4:23.2.1'
compile 'com.android.support:design:23.2.1'
compile 'com.jjoe64:graphview:4.2.1'
}

I am adding Fragments into FrameLayout with:

infoFragment = new InfoFragment();
    infoFragment.setLogs(mapLogIn, mapLogOut, monthToDispaly, yearToDispaly);
    infoFragment.setPracownik(mPracownik);


    if (getChildFragmentManager().findFragmentByTag("INFO") == null) {
        getChildFragmentManager()
                .beginTransaction()
                .add(R.id.frameForInfo, infoFragment, "INFO")
                .commit();
    }else {
        getChildFragmentManager()
                .beginTransaction()
                .replace(R.id.frameForInfo, infoFragment, "INFO")
                .commit();
    }

How I replacing FragmentA with FragmentB:

((AppCompatActivity)getActivity()).getSupportFragmentManager()
                        .beginTransaction()
                        .replace(R.id.frameForFragment, edit)
                        .addToBackStack(null)
                        .commit();

And how I come back from FragmentB to FragmentA:

getFragmentManager().beginTransaction().remove(AddingPerson.this).commit();

                    if (getFragmentManager().getBackStackEntryCount()>0){
                        getFragmentManager().popBackStack();
                    }

It looks like NestedScrollView was cuted at the bottom, because (if you look at ss) there is no padding frame at bottom.

I notice that when I come back to FragmentA (when wrong display is dispalying) and I replace fragments inside NestedScrollView bottom of NestedScrollView appears.

Here is YT video.

UPDATE

I found temporary answer here. I added:

android:layout_gravity="fill_vertical"
android:layout_marginBottom="?attr/actionBarSize"

But there is written that this bug is fixed in v22.2.1 but it seems is not. Somebody knows something about that?

Answer 1

Try using:

android:layout_marginBottom="?attr/actionBarSize"

in your NestedScrollView