안드로이드 RecyclerView 사용하기 예제

ListView를 대용해 사용가능한 RecyclerView

CardView, 가로 스크롤, 세로 스크롤 등 활용도가 높음

1.xml

layout의 원하는 위치에 Recyclerview를 넣는다.

<android.support.v7.widget.RecyclerView
    android:id="@+id/list_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/transparent"></android.support.v7.widget.RecyclerView>

2. 초기화

public class TestActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
        RecyclerView listView = (RecyclerView) view.findViewById(R.id.list_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
        layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);  // horizonta, vertical 옵션에 따라 가로/세로 list
        listView.setHasFixedSize(true);
        listView.setLayoutManager(layoutManager);
​
        TestAdapter adapter = new TestAdapter(getActivity(), R.layout.row_item, testarrayList);
        listView.setAdapter(adapter);
       
    }
}

3. Adapter

class TestAdapter extends RecyclerView.Adapter<TestAdapter.ViewHolder> {
    private final int resource;
    private Context context;
    private List<String> list;

    public TestAdapter(Context context, @AnyRes int resource, List<String> list) {
        this.resource = resource;
        this.context = context;
        this.list = list;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(resource, null);

        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        final String item = getItem(position);
        
        holder.title.setText(item);

    }

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

    private String getItem(int position) {
        return list.get(position);
    }

    public void clear() {
        if(null != list) {
            list.clear();
        }
    }

    public void addAll(List<String> list) {
        this.list = list;
        notifyDataSetChanged();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        public final TextView title;

        public ViewHolder(View parent) {
            super(parent);


            title= (TextView) parent.findViewById(R.id.title);
        }
    }
}