android-recyclerview-sample

This repository provides sample implementation for the android recyclerview.

• A simple sample using LinearLayoutManager and some actions to demonstrate the default animations.

• A simple sample using GridLayoutManager and some actions to demonstrate orientation change and reverse mode.

• A simple sample using StaggeredGridLayoutManager.

How to use RecyclerView

1. Update build.gradle with the following dependency:

    compile 'com.android.support:recyclerview-v7:21.0.0'
   

2. Include RecyclerView in Layout:

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

3. Initialize in Code:

    recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    // use this setting to improve performance if you know that changes
    // in content do not change the layout size of the RecyclerView
    recyclerView.setHasFixedSize(true);
    // use a linear layout manager
    layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);
    // specify an adapter (see also next example)
    adapter = new SimpleAdapter(this, items);
    recyclerView.setAdapter(adapter);
   

4. Write Adapter:

    public class SimpleAdapter extends RecyclerView.Adapter<SimpleAdapter.ViewHolder> {
   
       public static class ViewHolder extends RecyclerView.ViewHolder {
          public TextView txtTitle;
   
          public ViewHolder(final View container) {
             super(container);
             txtTitle = (TextView) container.findViewById(R.id.txtTitle);
          }
       }
   
       private List<Item> items;
       private Picasso picasso;
   
       public SimpleAdapter(final Activity activity, List<Item> items) {
          this.items = items;
       }
   
       @Override
       public int getItemCount() {
          return items.size();
       }
   
       @Override
       public void onBindViewHolder(SimpleAdapter.ViewHolder holder, int position) {
          Item item = items.get(position);
          holder.txtTitle.setText(item.getTitle());
       }
   
       @Override
       public SimpleAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
          // create a new view
          View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.recyclerview_item, parent, false);
          return new ViewHolder(v);
       }
    }