android 分类联动效果 模仿每日优鲜
16lz
2021-01-26
public class ClsFragment extends Fragment implements ClsContract.IclsView,LeftAdapter.ItemClickListener{ private RecyclerView rv_left; private RecyclerView rv_right; private ClsPresenter clsPresenter; private LeftAdapter leftAdapter; private RightAdapter rightAdapter; private String cid = "1"; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_cls, container, false); } @Override public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) { rv_left = view.findViewById(R.id.rv_left); rv_right = view.findViewById(R.id.rv_right); initData(); } private void initData() { rv_left.setLayoutManager(new LinearLayoutManager(getActivity())); rv_right.setLayoutManager(new LinearLayoutManager(getActivity())); clsPresenter = new ClsPresenter(this); getleft(cid); clsPresenter.getLeftList(new HashMap()); } private void getleft(String cid) { HashMap parmas = new HashMap<>(); parmas.put("cid",cid); clsPresenter.getRightList(parmas); } @Override public void leftSuccess(List leftClsBeanList) { if (leftAdapter==null){ leftAdapter = new LeftAdapter(leftClsBeanList,getActivity()); rv_left.setAdapter(leftAdapter); leftAdapter.setItemClickListener(this); }else { leftAdapter.notifyDataSetChanged(); } } @Override public void rightSuccess(List rightClsBeanList) { rightAdapter = new RightAdapter(rightClsBeanList,getActivity()); rv_right.setAdapter(rightAdapter); } @Override public void leftfailure(String error) } @Override public void rightfailure(String error) { } @Override public void click(String cid) { getleft(cid); }} public interface ClsContract { public abstract class ClsPresenters{ public abstract void getLeftList(HashMap params); public abstract void getRightList(HashMap params); } public interface IClsModel{ void getLeftList(HashMap params, ClsModel.ClsModelCallback clsModelCallback); void getRightList(HashMap params, ClsModel.ClsModelCallback clsModelCallback); } public interface IclsView{ void leftSuccess(List leftClsBeanList); void rightSuccess(List rightClsBeanList); void leftfailure(String error); void rightfailure(String error); }}public class ClsPresenter extends ClsContract.ClsPresenters { private ClsModel clsModel; private ClsContract.IclsView iclsView; public ClsPresenter(ClsContract.IclsView iclsView) { this.iclsView = iclsView; this.clsModel = new ClsModel(); } @Override public void getLeftList(HashMap params) { clsModel.getLeftList(params, new ClsModel.ClsModelCallback() { @Override public void leftsuccess(String result) { LeftClsBean leftClsBean = new Gson().fromJson(result,LeftClsBean.class); List data = leftClsBean.data; iclsView.leftSuccess(data); } }); } @Override public void getRightList(HashMap params) { clsModel.getRightList(params, new ClsModel.ClsModelCallback() { @Override public void leftsuccess(String result) { } @Override public void rightsuccess(String result) { RightClsBean rightClsBean = new Gson().fromJson(result,RightClsBean.class); List data = rightClsBean.data; iclsView.rightSuccess(data); } }); }}public class ClsModel implements ClsContract.IClsModel { @Override public void getLeftList(HashMap params, final ClsModelCallback clsModelCallback) { OkhttpUtils.getInstance().doPost(ClsApi.LEFT_API, params, new OkHttpCallback() { @Override public void Success(String result) { if (clsModelCallback!=null){ clsModelCallback.leftsuccess(result); } } @Override public void Failure(String msg) { if (clsModelCallback!=null){ clsModelCallback.leftfailure(msg); } } }); } @Override public void getRightList(HashMap params, final ClsModelCallback clsModelCallback) { OkhttpUtils.getInstance().doPost(ClsApi.RIGHT_API, params, new OkHttpCallback() { @Override public void Success(String result) { if (clsModelCallback!=null){ clsModelCallback.rightsuccess(result); } } @Override public void Failure(String msg) { if (clsModelCallback!=null){ clsModelCallback.rightfailure(msg); } } }); } public interface ClsModelCallback{ void leftsuccess(String result); void rightsuccess(String result); void leftfailure(String error); void rightfailure(String error); }} public class LeftAdapter extends RecyclerView.Adapter{ private List list; private Context context; public LeftAdapter(List list, Context context) { this.list = list; this.context = context; } @NonNull @Override public leftViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View view = LayoutInflater.from(context).inflate(R.layout.left_layout_item,viewGroup,false); leftViewHolder leftViewHolder = new leftViewHolder(view); return leftViewHolder; } @Override public void onBindViewHolder(@NonNull leftViewHolder leftViewHolder, int i) { final LeftClsBean.Cls cls = list.get(i); leftViewHolder.tv_name.setText(cls.name); leftViewHolder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (itemClickListener!=null){ itemClickListener.click(cls.cid); } } }); } @Override public int getItemCount() { return list==null?0:list.size(); } class leftViewHolder extends RecyclerView.ViewHolder { private final TextView tv_name; public leftViewHolder(@NonNull View itemView) { super(itemView); tv_name = itemView.findViewById(R.id.tv_name); } } private ItemClickListener itemClickListener; public void setItemClickListener(ItemClickListener itemClickListener){ this.itemClickListener = itemClickListener; } public interface ItemClickListener{ void click(String cid); }} public class RightAdapter extends RecyclerView.Adapter{ private List list; private Context context; public RightAdapter(List list, Context context) { this.list = list; this.context = context; } @NonNull @Override public rightViewHodler onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View view = LayoutInflater.from(context).inflate(R.layout.right_layout_item,viewGroup,false); rightViewHodler rightViewHodler = new rightViewHodler(view); return rightViewHodler; } @Override public void onBindViewHolder(@NonNull rightViewHodler rightViewHodler, int i) { RightClsBean.DataBean dataBean = list.get(i); List list = dataBean.list; rightViewHodler.tv_name.setText(dataBean.name); rightViewHodler.recyclerView.setLayoutManager(new GridLayoutManager(context,3)); rightViewHodler.recyclerView.setAdapter(new RightItemAdapter(context,list)); } @Override public int getItemCount() { return list==null?0:list.size(); } class rightViewHodler extends RecyclerView.ViewHolder{ private final TextView tv_name; private final RecyclerView recyclerView; public rightViewHodler(@NonNull View itemView) { super(itemView); tv_name = itemView.findViewById(R.id.tv_name); recyclerView = itemView.findViewById(R.id.rv); } }} public class RightItemAdapter extends RecyclerView.Adapter{ private Context context; private List listBeans; public RightItemAdapter(Context context, List listBeans) { this.context = context; this.listBeans = listBeans; } @NonNull @Override public rightitemViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { View view = LayoutInflater.from(context).inflate(R.layout.rightitem_layout_item,viewGroup,false); rightitemViewHolder rightitemViewHolder = new rightitemViewHolder(view); return rightitemViewHolder; } @Override public void onBindViewHolder(@NonNull rightitemViewHolder rightitemViewHolder, int i) { RightClsBean.DataBean.ListBean listBean = listBeans.get(i); rightitemViewHolder.tv_name.setText(listBean.name); Glide.with(context).load(listBean.icon).into(rightitemViewHolder.imageView); } @Override public int getItemCount() { return listBeans==null?0:listBeans.size(); } class rightitemViewHolder extends RecyclerView.ViewHolder { private final TextView tv_name; private final ImageView imageView; public rightitemViewHolder(@NonNull View itemView) { super(itemView); tv_name = itemView.findViewById(R.id.tv_name); imageView = itemView.findViewById(R.id.iv); } }} 更多相关文章
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