Adding fast scroller to your recyclerview

Fast scrolling is one of the oldest features provided by Android and other OS(s) as well. This feature helps you to scroll easily in a list which can be huge in size and makes it pretty fast and simple to search for a particular element.

Implementing this is very easy using a library named as Recycler-Fast-Scroll provided by FutureMind.

To get the fast scrolling. First, you need to add the dependency to your module level build.gradle.

compile 'com.futuremind.recyclerfastscroll:fastscroll:0.2.5'

1	compile 'com.futuremind.recyclerfastscroll:fastscroll:0.2.5'

After this, you need to add the scrolling layout in the view and for that open the XML file of your activity or fragment and add the following code

<com.futuremind.recyclerviewfastscroll.FastScroller
                android:id="@+id/fast_scroller"
                android:orientation="vertical"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true" />

<com.futuremind.recyclerviewfastscroll.FastScroller

android:id="@+id/fast_scroller"

android:orientation="vertical"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_alignParentEnd="true"

android:layout_alignParentRight="true" />

This will provide you the bar which will be used to scroll through the recyclerview elements and it is customizable too.

Now, you need to attach this fast_scroller to the recyclerview and for that, you can follow the below code segment

your_fast_scroller.setRecyclerView(your_recyclerview);

1	your_fast_scroller.setRecyclerView(your_recyclerview);

And to get the bubble which will display the character you need implement SectionTitleProvider in the recyclerview adapter and override its getSectionTitle function.

public class MyAdapter ... implements SectionTitleProvider{
            
            ...
            
            @Override
            public String getSectionTitle(int position) {
                //this String will be shown in a bubble for specified position
                return getItem(position).substring(0, 1);
            }
        }

public class MyAdapter ... implements SectionTitleProvider{

...

@Override

public String getSectionTitle(int position) {

//this String will be shown in a bubble for specified position

return getItem(position).substring(0, 1);

}

That’s all, You can enjoy your fast scrolling feature wherever you want.

Thank you very much, this is Vedesh Kumar signing off.

fast scroller recyclerview

Vedesh Kumar 18 April 2017

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Adding fast scroller to your recyclerview

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