CODEWITHSUNDEEP
androidandroid-recyclerviewandroid-scrollview
Sensiblewings47
Sensiblewings47

Reputation: 566

How to disable child(RecyclerView) scrolling before parent(ScrollView) has completely scrolled

I have a RecyclerView inside a ScrollView. When I try to scroll to bottom, the RecyclerView(child element) scrolls to bottom before the parent starts scrolling. But what I want it, the parent should scroll completely before child starts scrolling. Here is my layout file. Can someone please guide me how can I achieve this?

<RelativeLayout 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"
android:orientation="vertical">

<ScrollView
    android:id="@+id/scrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:id="@+id/user_activity_linear_layout">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="400dp"
            android:id="@+id/blank_layout"
            android:orientation="vertical">
        </LinearLayout>

        <android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/recently_watched_recycler_view"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="400dp"
            android:id="@+id/blank_layout"
            android:orientation="vertical">
        </LinearLayout>

    </LinearLayout>

</ScrollView>

</RelativeLayout>

Upvotes: 1

Views: 1894

Answers (2)

Ragesh Ramesh
Ragesh Ramesh

Reputation: 3520

Disable RecyclerView. Extend scrollview so that you will know when ot has reached bottom as bellow.

public class myScrollView extends ScrollView
{
    public myScrollView(Context context)
    {
        super(context);
    }
    public myScrollView(Context context, AttributeSet attributeSet)
    {
        super(context,attributeSet);
    }

@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt)
{
    View view = (View)getChildAt(getChildCount()-1);
    int d = view.getBottom();
    d -= (getHeight()+getScrollY());
    if(d==0)
    {
        //you are at the end of the list in scrollview 
        //do what you wanna do here
    }
    else
        super.onScrollChanged(l,t,oldl,oldt);
}

}

Once your scrollViewReaches bottom enable recyclerView. Give it a go. If you are not able to achieve what you desire using this method let me know.

Upvotes: 0

ianhanniballake
ianhanniballake

Reputation: 200080

Just use NestedScrollView - it supports having nested scrolling enabled views (such as RecyclerView) inside of it. Make sure you are using Support Library 23.2, which allows RecyclerView to measure itself based on its contents.

Upvotes: 0

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