RecyclerView通用CommomAdapter初版

app\build.gradle

CommomAdapter.java

import android.support.v7.widget.RecyclerView;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.List;

/**
 * Created by baostorm on 2017/12/17.
 */

public abstract class CommonAdapter<T> extends       RecyclerView.Adapter<CommonAdapter.ViewHolder> {

    private List<T> mItemsList;
    private OnItemClickListener mListener;

    //构造函数
    public CommonAdapter(List<T> list) {
        mItemsList = list;
    }

    public abstract int getLayoutId(int ViewType);

    @Override
    public ViewHolder onCreateViewHolder(final ViewGroup parent, int viewType) {
        return ViewHolder.get(parent, getLayoutId(viewType));
    }

    @Override
    public void onBindViewHolder(final ViewHolder holder, int position) {

        convert(holder, mItemsList.get(position), position);

        if (mListener != null) {
            holder.mConvertView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    mListener.onClick(holder.getAdapterPosition());
                }
            });
            holder.mConvertView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    mListener.onLongClick(holder.getAdapterPosition());
                    return false;
                }
            });
        }
    }

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

    public abstract void convert(ViewHolder holder, T data, int position);

    public static class ViewHolder extends RecyclerView.ViewHolder{
        private SparseArray<View> mView;
        private View mConvertView;
        private ViewHolder(View v) {
            super(v);
            mConvertView = v;
            mView = new SparseArray<>();
        }
        public static ViewHolder get(ViewGroup parent, int layoutId) {
            View convertView = LayoutInflater.from(parent.getContext()).inflate(layoutId, parent, false);
            return new ViewHolder(convertView);
        }
        public <T extends View> T getView(int id) {
            View v = mView.get(id);
            if (v == null) {
                v = mConvertView.findViewById(id);
                mView.put(id, v);
            }
            return (T)v;
        }
        public void setText(int id, String value) {
            TextView view = getView(id);
            view.setText(value);
        }
        //为item里面的元素设置点击事件
        public void onWidgetClick(int id, View.OnClickListener listener) {
            View view = getView(id);
            view.setOnClickListener(listener);
        }
    }

    //item的点击事件
    public interface OnItemClickListener {
        void onClick(int position);
        void onLongClick(int position);
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        mListener = listener;
    }

}
           

MainActivity.java

public class MainActivity extends AppCompatActivity {
    private CommonAdapter<MyItemClass> mainAdapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mainAdapter = new CardAdapter<MyItemClass>(mListItem) {
            @Override
            public int getLayoutId(int ViewType) {
                return R.layout.my_item;
            }

            @Override
            public void convert(ViewHolder holder, MyItemClass data, int position) {
                holder.setText(R.id.git_name, data.getLogin());
                holder.setText(R.id.git_id, data.getId());
                holder.setText(R.id.git_blog, data.getBlog());
                holder.onWidgetClick(R.id.git_name, new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Toast.makeText(MainActivity.this, data.getLogin(), Toast.LENGTH_SHORT).show();
                    }
                });
            }
        };
        RecyclerView recyclerView = findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(mainAdapter);
    }
}