Using a RecyclerView

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This is the bare minimum boilerplate for quickly creating a RecyclerView.

Usage:

In your build.gradle

// implementation "com.android.support:recyclerview-v7:23.0.1"
implementation 'androidx.recyclerview:recyclerview:1.1.0-alpha04'

In code

mRecyclerView = (RecyclerView) findViewById(R.id.list);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setAdapter(new BasicListAdapter(this));

The LayoutManager can also be set like so:

<androidx.recyclerview.widget.RecyclerView
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

Adapter

public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> {

    protected List<Item> mData = new ArrayList<Item>();
    protected LayoutInflator mInflater;

    public MyAdapter(Context context) {
        mInflater = LayoutInflater.from(context);
    }
 
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
      return new MyViewHolder(
        mInflater.inflate(R.layout.li_item, viewGroup, false)
      );
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
      holder.bind(mData.get(position));
    }

    @Override
    public int getItemCount() {
        return mData.size();
    }
}

ViewHolder

public class MyViewHolder extends RecyclerView.ViewHolder {

    private final TextView mTextView;

    public ViewHolder(View v) {
        super(v);
        mTextView = (TextView) v.findViewById(R.id.label);
    }

    public void bind(Entity entity){
        mTextView.setText(entity.getTitle());
    }
}

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