打造RecyclerView的万能适配器

public class RecyclerViewHolder extends RecyclerView.ViewHolder {

private SparseArray<View> mViews;//集合类，layout里包含的View,以view的id作为key，value是view对象
private Context mContext;//上下文对象

public RecyclerViewHolder(Context ctx, View itemView) {
super(itemView);
mContext = ctx;
mViews = new SparseArray<View>();
}

private <T extends View> T findViewById(int viewId) {
View view = mViews.get(viewId);
if (view == null) {
view = itemView.findViewById(viewId);
mViews.put(viewId, view);
}
return (T) view;
}

public View getView(int viewId) {
return findViewById(viewId);
}

public TextView getTextView(int viewId) {
return (TextView) getView(viewId);
}

public Button getButton(int viewId) {
return (Button) getView(viewId);
}

public ImageView getImageView(int viewId) {
return (ImageView) getView(viewId);
}

public ImageButton getImageButton(int viewId) {
return (ImageButton) getView(viewId);
}

public EditText getEditText(int viewId) {
return (EditText) getView(viewId);
}

public RecyclerViewHolder setText(int viewId, String value) {
TextView view = findViewById(viewId);
view.setText(value);
return this;
}

public RecyclerViewHolder setBackground(int viewId, int resId) {
View view = findViewById(viewId);
view.setBackgroundResource(resId);
return this;
}

public RecyclerViewHolder setClickListener(int viewId, View.OnClickListener listener) {
View view = findViewById(viewId);
view.setOnClickListener(listener);
return this;
}
}

<pre name="code" class="java">public abstract class BaseRecyclerAdapter<T> extends RecyclerView.Adapter<RecyclerViewHolder> {protected final List<T> mData;protected final Context mContext;protected LayoutInflater mInflater;private OnItemClickListener mClickListener;private OnItemLongClickListener mLongClickListener;public BaseRecyclerAdapter(Context ctx, List<T> list) {mData = (list != null) ? list : new ArrayList<T>();mContext = ctx;mInflater = LayoutInflater.from(ctx);}@Overridepublic RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {final RecyclerViewHolder holder = new RecyclerViewHolder(mContext,mInflater.inflate(getItemLayoutId(viewType), parent, false));if (mClickListener != null) {holder.itemView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {mClickListener.onItemClick(holder.itemView, holder.getLayoutPosition());}});}if (mLongClickListener != null) {holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {@Overridepublic boolean onLongClick(View v) {mLongClickListener.onItemLongClick(holder.itemView, holder.getLayoutPosition());return true;}});}return holder;}@Overridepublic void onBindViewHolder(RecyclerViewHolder holder, int position) {bindData(holder, position, mData.get(position));}@Overridepublic int getItemCount() {return mData.size();}public void add(int pos, T item) {mData.add(pos, item);notifyItemInserted(pos);}public void delete(int pos) {mData.remove(pos);notifyItemRemoved(pos);}public void setOnItemClickListener(OnItemClickListener listener) {mClickListener = listener;}public void setOnItemLongClickListener(OnItemLongClickListener listener) {mLongClickListener = listener;}abstract public int getItemLayoutId(int viewType);abstract public void bindData(RecyclerViewHolder holder, int position, T item);public interface OnItemClickListener {public void onItemClick(View itemView, int pos);}public interface OnItemLongClickListener {public void onItemLongClick(View itemView, int pos);}}

使用：collegeAdapter=new BaseRecyclerAdapter(getActivity(),myCollegeBean) {@Overridepublic int getItemLayoutId(int viewType) {return R.layout.item_college;}@Overridepublic void bindData(RecyclerViewHolder holder, int position, Object item) {MytCollegeBean bean= (MytCollegeBean) item;InfoUtils.setPicture(mContext, holder.getImageView(R.id.college_vp_images),bean.thumb, R.mipmap.app_default_icon);holder.setText(R.id.college_name,bean.name);holder.setText(R.id.college_info,bean.description);}};点击事件：collegeAdapter.setOnItemClickListener(new BaseRecyclerAdapter.OnItemClickListener() {@Overridepublic void onItemClick(View itemView, int pos) {Intent intent = new Intent(getActivity(), CollegeDetailsActivity.class);intent.putExtra(Constant.ICollege.COLLEGE_NAME,myCollegeBean.get(pos).name);intent.putExtra(Constant.ICollege.COLLEGE_ID,myCollegeBean.get(pos).id);startActivity(intent);}});