RecyclerView与ViewBinding结合简单封装weixin43508425的博客-

RecyclerView与ViewBinding结合简单封装

先进行BaseRecyclerViewAdapter抽象封装

//简单的封装        单布局 多布局    复用ViewHolder public abstract class BaseRecyclerViewAdapter<V> extends RecyclerView.Adapter<BaseRecyclerViewAdapter.ViewHolder> {       protected ArrayList<V> list;      protected Context context;      protected boolean isSizeCrrect;        public BaseRecyclerViewAdapter(ArrayList<V> list, Context context, boolean isSizeCrrect) {          this.list = list;         this.context = context;         this.isSizeCrrect = isSizeCrrect;     }      @Override     public int getItemViewType(int position) {          return getViewType(position);     }      @NonNull     @Override     public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {         return new ViewHolder(getViewBinding(viewType, LayoutInflater.from(context), parent));     }        @Override     public void onBindViewHolder(@NonNull ViewHolder holder, int position) {         setData(holder.v, list.get(position));     }      @Override     public int getItemCount() {          if (isSizeCrrect) {             //如果  list.size()   为正确             return list.size();          } else {             //如果  list.size()   为错误             return getListSize(list.size());         }     }       static class ViewHolder extends RecyclerView.ViewHolder {          ViewBinding v;         ViewHolder(ViewBinding viewBinding) {             super(viewBinding.getRoot());             v= viewBinding;         }     }      /*      这里返回的是   实际大小 不等于    list.size()     *     *     比如:   列表的末尾要显示一个添加图片的按钮布局   就要用到这个抽象方法  来给适配器实际的列表大小     * */     protected abstract int getListSize(int size);       /*     *       这个多布局判断抽象方法   需实现类 实现操作     * */     protected abstract int getViewType(int position);       /*     *       获取   ViewBinding   实现类        * */     protected abstract ViewBinding getViewBinding(int viewType, LayoutInflater from, ViewGroup parent);      /*     *     给ViewBinding   布局设置数据  点击事件等操作     * */     protected abstract void setData(ViewBinding viewBinding, V entity);  } 

再进行UtilsRecyclerViewAdapter抽象封装

//   列表工具类     可以自行添加 public  abstract class UtilsRecyclerViewAdapter <V>extends BaseRecyclerViewAdapter<V> {               public UtilsRecyclerViewAdapter(ArrayList<V> list, Context context, boolean isSizeCrrect) {         super(list, context, isSizeCrrect);     }       //------------------------------------------------------------------      protected void setText(TextView view, String o){         view.setText(o);     }      protected void setText(EditText view, String o){         view.setText(o);     }      protected void setOnClick(View view, View.OnClickListener v){         view.setOnClickListener(v);     }      //---------------------------------------------------------------------------------------------------------------------------      /*     *             在指定位置  插入  单个  数据     *     * */     protected void setInsertItem(V item,int position){         this.list.add(position,item);         notifyItemRangeInserted(position,1);         notifyItemRangeChanged(position,getItemCount());     }      /*      *              从指定位置 插入  多个  数据      *      * */     protected void setInsertList(ArrayList<V> list,int position){         this.list.addAll(position,list);         notifyItemRangeInserted(position,list.size());         notifyItemRangeChanged(position,getItemCount());     }       /*      *               插入  多个  数据      *      * */     protected void setInsertList(ArrayList<V> list){         this.list.addAll(list);         notifyItemRangeInserted(0,this.list.size());         notifyItemRangeChanged(0,getItemCount());     }      /*      *              从指定位置  删除  多个  数据      *      * */     protected void setDeleteItem(V item,int position){         if(item == null ){             this.list.remove(position);         }else {             this.list.remove(item);         }         notifyItemRemoved(position);         notifyItemRangeChanged(position,getItemCount());     }               /*      *              删除  多个  数据      * */     protected void setDeleteList(ArrayList<V> list){         this.list.removeAll(list);         notifyDataSetChanged();     }      /*     *        清空数据     * */     protected void setClear() {         if(this.list.size() > 0){             this.list.clear();         }     }      /*      *        清空数据  再   添加列表数据      * */     protected void setClearAddList(ArrayList<V> list){         setClear();         setDeleteList(list);     } } 

注意:

    UtilsRecyclerViewAdapter  只是一个工具抽象类，     如果不需要可以只使用BaseRecyclerViewAdapter  就可以 

HomeAdapter 抽象实现类

public class HomeAdapter extends UtilsRecyclerViewAdapter<entity> {       public HomeAdapter(ArrayList<entity> list, Context context, boolean isSizeCrrect) {         super(list, context, isSizeCrrect);      }        @Override     protected int getListSize(int size) {         return list.size();     }      @Override     protected int getViewType(int position) {         if(position % 2 == 0){             return 0;         }else {             return 1;         }     }      @Override     protected ViewBinding getViewBinding(int viewType, LayoutInflater from, ViewGroup parent) {          if(viewType == 0){             return ItemLayoutBinding.inflate(from,parent,false);         }else {             return Item2LayoutBinding.inflate(from,parent,false);         }     }      @Override     protected void setData(ViewBinding viewHolder, entity entity) {          if(viewHolder instanceof ItemLayoutBinding){             ((ItemLayoutBinding) viewHolder).text.setText("1111111111");             ((ItemLayoutBinding) viewHolder).text.setOnClickListener(v -> {                 Toast toast = Toast.makeText(context, null, Toast.LENGTH_SHORT);                 toast.setText(((ItemLayoutBinding) viewHolder).text.getText().toString());                 toast.show();             });              return;         }         if(viewHolder instanceof Item2LayoutBinding){             ((Item2LayoutBinding) viewHolder).textView.setText("2222222222");             ((Item2LayoutBinding) viewHolder).textView.setOnClickListener(v -> {                 Toast toast = Toast.makeText(context, null, Toast.LENGTH_SHORT);                 toast.setText(((Item2LayoutBinding) viewHolder).textView.getText().toString());                 toast.show();             });         }     }  } 

感谢大家的观看，如觉写的不好请见谅，谢谢！