Add the view to your layout:
<com.jaredrummler.fastscrollrecyclerview.FastScrollRecyclerView
android:id="@+id/recycler"
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"
app:fastScrollHideDelay="600"
app:fastScrollAlwaysEnabled="false"
app:fastScrollPopupBackgroundColor="?attr/colorAccent"
app:fastScrollPopupTextColor="@android:color/white"
app:fastScrollThumbActiveColor="?attr/colorAccent"
app:fastScrollThumbInactiveColor="?attr/colorAccent"/>Create a RecyclerView.Adapter that extends FastScrollRecyclerView.SectionedAdapter:
private static class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder>
implements FastScrollRecyclerView.SectionedAdapter {
private final String[] countries;
public RecyclerAdapter(String[] countries) {
this.countries = countries;
}
...
@NonNull @Override public String getSectionName(int position) {
return countries[position].substring(0, 1).toUpperCase(Locale.ENGLISH);
}
}Download the latest AAR or grab via Gradle:
compile 'com.jaredrummler:fastscroll-recyclerview:1.0.3'or Maven:
<dependency>
<groupId>com.jaredrummler</groupId>
<artifactId>fastscroll-recyclerview</artifactId>
<version>1.0.3</version>
<type>aar</type>
</dependency>This library is based on Google's Launcher3 fast scroller.
Some of the code in this library is from Tim Malseed's project RecyclerView-FastScroller
Copyright (C) 2016 Jared Rummler
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.