CODEWITHSUNDEEP
androidgridviewnestedscrollview
Midhun
Midhun

Reputation: 744

Nested scrollview inside gridview place is taking only somepart

I have: 1.Coordinator layout 2.appbar layout (child of Coordinator layout) 3.Collapsing toolbar layout (child of app bar) 4.NestedScrollView (child of coordinator)

I want to put a grid view inside NestedScrollView so that user can scroll over the entire screen space.

My problem is that currently the gridview occupies a small portion of the NestedScrollView and not full space of NestedScrollView and scrolls inside that portion,like in this image:

enter image description here

As you can see my gridview height is limited upto only that highlighted portion in sky blue color, i want that to occupy the entire screen space below that image(which is my Collapsing toolbar).i tried different ways but nothing works out. my xml file is:

<?xml version="1.0" encoding="utf-8"?>


<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:id="@+id/app_bar"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="196dp"
        android:background="#3f51b5"
        app:contentScrim="@color/colorPrimary"
        app:expandedTitleMarginEnd="64dp"
        app:expandedTitleMarginStart="48dp"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">


        <ImageView
            android:id="@+id/imageview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/index"
            app:layout_collapseMode="parallax" />

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_collapseMode="pin"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/AppTheme.PopupOverlay" />
    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <GridView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginLeft="1dp"
        android:layout_marginRight="1dp"

        android:id="@+id/gridView"
        android:verticalSpacing="1dp"
        android:horizontalSpacing="1dp"
        android:numColumns="2"
        android:stretchMode="columnWidth"/>

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

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="right|bottom"
    android:layout_margin="@dimen/fab_margin"
    android:src="@android:drawable/ic_dialog_email" />

Upvotes: 7

Views: 8898

Answers (4)

Maksymilian Wojczuk
Maksymilian Wojczuk

Reputation: 141

It is true, that GridView conflicts with the NestedScrollView and the correct solution would be to use the RecyclerView, but I needed a quick workaround with such setup and came across a solution using a custom class extending the GridView: https://gist.github.com/jiahuang/2591977

Then you just have to replace your GridView with the custom class and set the parameter of NestedScrollView as in Apoorv's answer:

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

Upvotes: 9

avb222
avb222

Reputation: 31

Apoorv Singh's answer helped me, but not fully. You can put a GridView inside a NestedScrollView, but only the 1st row will show up. You need to add the android:fillViewport="true" inside the NestedScrollView definition in order for everything to display properly.

But, when I scroll down, it doesn't scroll past the bottom of the screen. I have a grid with 10 rows, there are multiple rows not on screen, but I cannot scroll down to view them now.

Answer: This worked for me now. Use RecyclerView with GridLayoutManager instead of GridView. As Recycler view is compatible with Collapsing toolbar as well. And when you use RecyclerView inside NestedScrollView, it works well. Everything sizes correctly, as well as scrolls correctly.

Upvotes: 3

Apoorv Singh
Apoorv Singh

Reputation: 1335

well i had the same issue , the following worked for me.

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

Upvotes: 14

tachyonflux
tachyonflux

Reputation: 20221

GridView already has scrolling built in, so it conflicts with a NestedScrollView. You should be using a RecyclerView with a GridLayoutManager and appbar_scrolling_view_behavior layout behavior in place of the NestedScrollView.

Upvotes: 15

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