Why NestedScrollView stop scrolling when CollapsingToolbarLayout is completely collapse?

问题

I am using collapsingToolbarlayout with nestedscrollview and it works fine, until the collapsingToolbarlayout is completely collapse and actionbar is showing. Here the nestedscrollview stop scrolling and some items still hidden.

here is my xml file

    <android.support.design.widget.CoordinatorLayout
    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.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        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:layout_scrollFlags="scroll|exitUntilCollapsed"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginStart="48dp"
            app:expandedTitleMarginEnd="64dp"
            >

            <FrameLayout
                android:id="@+id/topLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fitsSystemWindows="true"
                app:layout_collapseMode="parallax"
                >

                <ImageView
                    android:id="@+id/BigThumbnailImage"
                    android:layout_width="match_parent"
                    android:layout_height="200dp"
                    android:adjustViewBounds="true"
                    android:fitsSystemWindows="true"
                    android:src="@drawable/bg_health_news"
                    android:scaleType="fitXY" />

            </FrameLayout>

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

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

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

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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:weightSum="1"
            >

            <include
                android:layout_width="match_parent"
                android:layout_height="0dp"
                layout="@layout/place_item_details_views"
                android:layout_weight="1"
                />

        </LinearLayout>

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

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

I have searched a lot & I don't know why it happens

thanks in advance

UPDATE

I have find out the problem is I am including a layout that contains a horizontalscrollview and when it empty or contains data it causes this issue if someone knows this problem can help me thanks

回答1:

I think the reason is that your last items are out of the screen, because of shift, so you can try to add:

android:paddingBottom="<your toolbar height in collapsed state>"

to your NestedScrollView. In my case that helped.

来源：https://stackoverflow.com/questions/33712401/why-nestedscrollview-stop-scrolling-when-collapsingtoolbarlayout-is-completely-c

标签

android

android-coordinatorlayout

nestedscrollview