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README.md

SimpleRecyclerView

Simplest RecyclerView extention for implementing pagination (on reach list bottom listener, displaying progress bar) and empty view (nothing found) with RecyclerView

Download

dependencies {
   compile 'com.myhexaville:simple-recyclerview:0.2.0'
}

Setup

Add SimpleRecycerView in XML

<com.myhexaville.simplerecyclerview.SimpleRecyclerView
            android:layout_width="match_parent"
            android:id="@+id/list"
            android:layout_height="match_parent"/>

Implement SimpleRecyclerView.Adapter, RecyclerView.ViewHolder implementation is same as with default RecyclerView

public class Adapter extends SimpleRecyclerView.Adapter<Holder> {
    public List<String> list;

    public Adapter(List<String> list) {
        this.list = list;
    }

    @Override
    public Holder onCreateHolder(ViewGroup parent) {
       // create View Holder just like you did before
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public void onBindHolder(Holder holder, int position) {
        // bind view holder just like you did before
    }
}

Setup in Java

simpleRecyclerView.setLayoutManager(new LinearLayoutManager(context));
simpleRecyclerView.setAdapter(new Adapter(list));

Features

Pagination

By default pagination and footer ProgressBar is disabled, to enable it simply add those lines

simpleRecyclerView.setOnLoadMoreListener(() -> {
  // fetch data from your server and add to your list
  
  // this will do notifyItemRangeInserted
  // no need to notify recyclerView adapter yourself
  simpleRecyclerView.setDoneFetching();
});

This listener will be called each time you reach bottom of the list and will display default ProgressBar footer

ezgif com-resize

Custom ProgressBar footer

If you want to use your own ProgressBar footer - create your own progress_footer.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />
</FrameLayout>

and pass to SimpleRecyclerView

<com.myhexaville.simplerecyclerview.SimpleRecyclerView
            android:layout_width="match_parent"
            android:id="@+id/list"
            app:progress_layout="@layout/progress_footer"
            android:layout_height="match_parent"/>

No More To Fetch

If you server returns no items and you don't want setOnLoadMoreListener listener to be called anymore just like don't display ProgressBar any more - call this method

simpleRecyclerView.setOnLoadMoreListener(() -> {
  ...
  if (noStuffFetchedFromServer) {
     simpleRecyclerView.setNoMoreToFetch();
  }
});

Empty View

By default empty view (Nothing found, when list is empty) is disabled. To display it - create your empty_layout.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Nothing Found" />
</FrameLayout>

And pass to SimpleRecyclerView

<com.myhexaville.simplerecyclerview.SimpleRecyclerView
            android:layout_width="match_parent"
            android:id="@+id/list"
            app:empty_layout="@layout/empty_layout"
            android:layout_height="match_parent"/>

Initial ProgressBar

Initial ProgressBar in the center is enabled by default. To hide it after you fetched your data call this method

simpleRecyclerView.setDoneFetching();

Call this method even if you have data preloaded and just set it during SimpleRecyclerView setup

To disable initial ProgressBar - use this attribute

<com.myhexaville.simplerecyclerview.SimpleRecyclerView
            ...
            app:initial_progress_bar_enabled="false"/>

Inside NestedScrollView

If you have SimpleRecyclerView inside of NestedScrollView - here's few initial tips and how to manage setOnLoadMoreListener with it

<NestedScrollView
   ...
   android:fillViewport="true"/>
<com.myhexaville.simplerecyclerview.SimpleRecyclerView
    ...
    android:nestedScrollingEnabled="false"/>
simpleRecyclerView.setInsideNestedScrollView(nestedScrollView);

Sample

There's a sample of using this library in this repo