Android RecyclerView 通用Adapte，单一类型

小鱼儿 2022-05-28 03:22 118阅读 0赞

项目中使用的通用Adapter 和ViewHolder ，这两个只支持单一ItemType

## CommonAdapter ##

public abstract class CommonAdapter<T> extends RecyclerView.Adapter<ViewHolder> {
        protected Context mContext;
        protected int mLayoutId;
        protected List<T> mDatas;
        protected LayoutInflater mInflater;
        protected ViewGroup mRv;
    
        private OnItemClickListener mOnItemClickListener;
    
        public CommonAdapter setOnItemClickListener(OnItemClickListener onItemClickListener) {
            this.mOnItemClickListener = onItemClickListener;
            return this;
        }
    
        public interface OnItemClickListener<T> {
            void onItemClick(ViewGroup parent, View view, T t, int position);
    
            boolean onItemLongClick(ViewGroup parent, View view, T t, int position);
        }
    
        public OnItemClickListener getmOnItemClickListener() {
            return mOnItemClickListener;
        }
    
        public CommonAdapter(Context context, int layoutId, List<T> datas) {
            mContext = context;
            mInflater = LayoutInflater.from(context);
            mLayoutId = layoutId;
            mDatas = datas;
        }
    
        @Override
        public ViewHolder onCreateViewHolder(final ViewGroup parent, int viewType) {
            ViewHolder viewHolder = ViewHolder.get(mContext, null, parent, mLayoutId, -1);
            if (null == mRv) {
                mRv = parent;
            }
            return viewHolder;
        }
    
        protected int getPosition(RecyclerView.ViewHolder viewHolder) {
            return viewHolder.getAdapterPosition();
        }
    
        protected boolean isEnabled(int viewType) {
            return true;
        }
    
    
        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            holder.updatePosition(position);
            setListener(position, holder);
            convert(holder, mDatas.get(position),position);
        }
    
        protected void setListener(final int position, final ViewHolder viewHolder) {
            if (!isEnabled(getItemViewType(position))) return;
            viewHolder.getConvertView().setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (mOnItemClickListener != null) {
                        mOnItemClickListener.onItemClick(mRv, v, mDatas.get(position), position);
                    }
                }
            });
    
    
            viewHolder.getConvertView().setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    if (mOnItemClickListener != null) {
                        int position = getPosition(viewHolder);
                        return mOnItemClickListener.onItemLongClick(mRv, v, mDatas.get(position), position);
                    }
                    return false;
                }
            });
        }
    
        public abstract void convert(ViewHolder holder, T t,int position);
    
        @Override
        public int getItemCount() {
            return mDatas != null ? mDatas.size() : 0;
        }
    
    
        /** * 刷新数据，初始化数据 * * @param list */
        public void setDatas(List<T> list) {
            if (this.mDatas != null) {
                if (null != list) {
                    List<T> temp = new ArrayList<>();
                    temp.addAll(list);
                    this.mDatas.clear();
                    this.mDatas.addAll(temp);
                } else {
                    this.mDatas.clear();
                }
            } else {
                this.mDatas = list;
            }
            notifyDataSetChanged();
        }
    
        /** * 删除数据 * * @param i */
        public void remove(int i) {
            if (null != mDatas && mDatas.size() > i && i > -1) {
                mDatas.remove(i);
                notifyDataSetChanged();
            }
        }
    
        /** * 加载更多数据 * * @param list */
        public void addDatas(List<T> list) {
            if (list.size() > 0 && null != list) {
                List<T> temp = new ArrayList<>();
                temp.addAll(list);
                if (this.mDatas != null) {
                    this.mDatas.addAll(temp);
                } else {
                    this.mDatas = temp;
                }
                notifyDataSetChanged();
            }
    
        }
    
    
        public List<T> getDatas() {
            return mDatas;
        }
    
    
        public T getItem(int position) {
            if (position > -1 && null != mDatas && mDatas.size() > position) {
                return mDatas.get(position);
            }
            return null;
        }
    }

## ViewHolder ##

public class ViewHolder extends RecyclerView.ViewHolder { 
        private SparseArray<View> mViews;
        private int mPosition;
        private View mConvertView;
        protected Context mContext;
        private int mLayoutId;
    
        public ViewHolder(Context context, View itemView, ViewGroup parent, int position) {
            super(itemView);
            mContext = context;
            mConvertView = itemView;
            mPosition = position;
            mViews = new SparseArray<View>();
            mConvertView.setTag(this);
    // itemView.setBackgroundDrawable(itemView.getResources().getDrawable(R.drawable.app_listview_item_bg));
        }
    
        public ViewHolder(Context context, View itemView) {
            super(itemView);
            mContext = context;
            mConvertView = itemView;
            mViews = new SparseArray<View>();
        }
    
    
        public static ViewHolder get(Context context, View convertView,
                                     ViewGroup parent, int layoutId, int position) {
            if (convertView == null) {
                View itemView = LayoutInflater.from(context).inflate(layoutId, parent,
                        false);
                ViewHolder holder = new ViewHolder(context, itemView, parent, position);
                holder.mLayoutId = layoutId;
                return holder;
            } else {
                ViewHolder holder = (ViewHolder) convertView.getTag();
                holder.mPosition = position;
                return holder;
            }
        }
    
    
        /** * 通过viewId获取控件 * * @param viewId * @return */
        public <T extends View> T getView(int viewId) {
            View view = mViews.get(viewId);
            if (view == null) {
                view = mConvertView.findViewById(viewId);
                mViews.put(viewId, view);
            }
            return (T) view;
        }
    
        public View getConvertView() {
            return mConvertView;
        }
    
    
        /** * 设置TextView的值 * * @param viewId * @param text * @return */
        public ViewHolder setText(int viewId, CharSequence text) {
            TextView tv = getView(viewId);
            tv.setText(text);
            return this;
        }
    
        public ViewHolder setSelected(int viewId, boolean selected) {
            View v = getView(viewId);
            v.setSelected(selected);
            return this;
        }
    
        public ViewHolder setImageResource(int viewId, int resId) {
            ImageView view = getView(viewId);
            view.setImageResource(resId);
            return this;
        }
    
        public ViewHolder setImageBitmap(int viewId, Bitmap bitmap) {
            ImageView view = getView(viewId);
            view.setImageBitmap(bitmap);
            return this;
        }
    
        public ViewHolder setImageDrawable(int viewId, Drawable drawable) {
            ImageView view = getView(viewId);
            view.setImageDrawable(drawable);
            return this;
        }
    
        public ViewHolder setBackgroundColor(int viewId, int color) {
            View view = getView(viewId);
            view.setBackgroundColor(color);
            return this;
        }
    
        public ViewHolder setBackgroundRes(int viewId, int backgroundRes) {
            View view = getView(viewId);
            view.setBackgroundResource(backgroundRes);
            return this;
        }
    
        public ViewHolder setTextColor(int viewId, int textColor) {
            TextView view = getView(viewId);
            view.setTextColor(textColor);
            return this;
        }
    
        public ViewHolder setTextColorRes(int viewId, int textColorRes) {
            TextView view = getView(viewId);
            view.setTextColor(mContext.getResources().getColor(textColorRes));
            return this;
        }
    
        @SuppressLint("NewApi")
        public ViewHolder setAlpha(int viewId, float value) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                getView(viewId).setAlpha(value);
            } else {
                // Pre-honeycomb hack to set Alpha value
                AlphaAnimation alpha = new AlphaAnimation(value, value);
                alpha.setDuration(0);
                alpha.setFillAfter(true);
                getView(viewId).startAnimation(alpha);
            }
            return this;
        }
    
        public ViewHolder setVisible(int viewId, boolean visible) {
            View view = getView(viewId);
            view.setVisibility(visible ? View.VISIBLE : View.GONE);
            return this;
        }
    
        public ViewHolder linkify(int viewId) {
            TextView view = getView(viewId);
            Linkify.addLinks(view, Linkify.ALL);
            return this;
        }
    
        public ViewHolder setTypeface(Typeface typeface, int... viewIds) {
            for (int viewId : viewIds) {
                TextView view = getView(viewId);
                view.setTypeface(typeface);
                view.setPaintFlags(view.getPaintFlags() | Paint.SUBPIXEL_TEXT_FLAG);
            }
            return this;
        }
    
        public ViewHolder setProgress(int viewId, int progress) {
            ProgressBar view = getView(viewId);
            view.setProgress(progress);
            return this;
        }
    
        public ViewHolder setProgress(int viewId, int progress, int max) {
            ProgressBar view = getView(viewId);
            view.setMax(max);
            view.setProgress(progress);
            return this;
        }
    
        public ViewHolder setMax(int viewId, int max) {
            ProgressBar view = getView(viewId);
            view.setMax(max);
            return this;
        }
    
        public ViewHolder setRating(int viewId, float rating) {
            RatingBar view = getView(viewId);
            view.setRating(rating);
            return this;
        }
    
        public ViewHolder setRating(int viewId, float rating, int max) {
            RatingBar view = getView(viewId);
            view.setMax(max);
            view.setRating(rating);
            return this;
        }
    
        public ViewHolder setTag(int viewId, Object tag) {
            View view = getView(viewId);
            view.setTag(tag);
            return this;
        }
    
        public ViewHolder setTag(int viewId, int key, Object tag) {
            View view = getView(viewId);
            view.setTag(key, tag);
            return this;
        }
    
        public ViewHolder setChecked(int viewId, boolean checked) {
            Checkable view = (Checkable) getView(viewId);
            view.setChecked(checked);
            return this;
        }
    
    
    
        /** * 关于事件的 */
        public ViewHolder setOnClickListener(int viewId,
                                             View.OnClickListener listener) {
            View view = getView(viewId);
            view.setOnClickListener(listener);
            return this;
        }
    
        public ViewHolder setOnTouchListener(int viewId,
                                             View.OnTouchListener listener) {
            View view = getView(viewId);
            view.setOnTouchListener(listener);
            return this;
        }
    
        public ViewHolder setOnLongClickListener(int viewId,
                                                 View.OnLongClickListener listener) {
            View view = getView(viewId);
            view.setOnLongClickListener(listener);
            return this;
        }
    
        public void updatePosition(int position) {
            mPosition = position;
        }
    
        public int getLayoutId() {
            return mLayoutId;
        }
    
        /** * 隐藏或展示Item * * @param visible */
        public void setItemVisible(boolean visible) {
            View v = getConvertView();
            if (null != v) {
                if (visible) {
                    if (null != v.getLayoutParams()) {
                        v.getLayoutParams().width = AbsListView.LayoutParams.MATCH_PARENT;
                        v.getLayoutParams().height = AbsListView.LayoutParams.WRAP_CONTENT;
                    } else {
                        v.setLayoutParams(new AbsListView.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.WRAP_CONTENT));
                    }
                    v.setVisibility(View.VISIBLE);
                } else {
                    if (null != v.getLayoutParams()) {
                        v.getLayoutParams().width = -1;
                        v.getLayoutParams().height = 1;
                    } else {
                        v.setLayoutParams(new AbsListView.LayoutParams(-1, 1));
                    }
                    v.setVisibility(View.GONE);
                }
            }
        }
    
        public void setHItemVisible(boolean visible) {
            View v = getConvertView();
            if (null != v) {
                if (visible) {
                    if (null != v.getLayoutParams()) {
                        v.getLayoutParams().width = AbsListView.LayoutParams.WRAP_CONTENT;
                        v.getLayoutParams().height = AbsListView.LayoutParams.WRAP_CONTENT;
                    } else {
                        v.setLayoutParams(new AbsListView.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.WRAP_CONTENT));
                    }
                    v.setVisibility(View.VISIBLE);
                } else {
                    if (null != v.getLayoutParams()) {
                        v.getLayoutParams().width = -1;
                        v.getLayoutParams().height = 1;
                    } else {
                        v.setLayoutParams(new AbsListView.LayoutParams(-1, 1));
                    }
                    v.setVisibility(View.GONE);
                }
            }
        }
    
    }

## 使用 ##

mRecyclerView.setAdapter(mAdapter = new CommonAdapter<CartoonMoiveItemBean>(getActivity(), R.layout.cartton_item, data) {
                @Override
                public void convert(ViewHolder holder, CartoonMoiveItemBean cartoonMoiveItemBean, int position) {
                    NoNullUtils.setText((TextView) holder.getView(R.id.movie_name), cartoonMoiveItemBean.getTitle());
    //                NoNullUtils.setText((TextView) holder.getView(R.id.movie_title), cartoonMoiveItemBean.getTitle());
                    SimpleDraweeView draweeView = holder.getView(R.id.cartoon_simpleview);
                    draweeView.setAspectRatio(1.75f);
                    draweeView.setImageURI(cartoonMoiveItemBean.getThumbnail_url());
                }
            });

mAdapter.setOnItemClickListener(new CommonAdapter.OnItemClickListener<CartoonMoiveItemBean>() {
                @Override
                public void onItemClick(ViewGroup parent, View view, CartoonMoiveItemBean cartoonMoiveItemBean, int position) {
                    JumpUtils.toCartoomWebViewFragment(getActivity(),cartoonMoiveItemBean.getUrl());
                }
    
                @Override
                public boolean onItemLongClick(ViewGroup parent, View view, CartoonMoiveItemBean cartoonMoiveItemBean, int position) {
                    return false;
                }
    
            });