구조
MainActivity 아이템 추가 버튼
DiaglogFragment [ TabLayout + ViewPager ]
- Fragment1 [ RecyclerView ] (1 Page)
- Fragment2 [ RecyclerView ] (2 Page)
- Fragment3 [ RecyclerView ] (3 Page)
( Fragment1,2,3 은 중복이라 재활용 예정 )
MainActivity
FragmentManager fm = getSupportFragmentManager();
ArrayList<ArrayList<ProductModel.ODS0>> items = new ArrayList<>();
items.add(productList1);
items.add(productList2);
items.add(productList3);
productFragment = ProductFragment.newInstance(items);
productFragment.show(fm, "productFragment");
- newInstance(items)로 리스트를 넘겨줌 (각각 1,2,3 Page에서 보여질 리스트들)
- DialogFragment 상속한 ProductFragment 화면을 띄움
ProductFragment extends DialogFragment
public static ProductFragment newInstance(ArrayList<ArrayList<ProductModel.ODS0>> items) {
ProductFragment fragment = new ProductFragment();
Bundle args = new Bundle();
args.putSerializable(KEY_DATA,items);
fragment.setArguments(args);
return fragment;
}
- Bundle에 리스트를 넣어 Fragment에 이식
- 리스트가 하나였다면 putParcelableArrayList로 하지만 이 경우에는 리스트의 리스트이므로 어쩔수 없이
putSerializable을 사용함
cf) Model 클래스를 Serializable보다 Parcelable 이 좋다고 함 ( 이유는 모르겠지만 Parcelable 쓰는게 안정적이라고 함 )
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_product_list, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
tabLayout = view.findViewById(R.id.product_pick_tablayout);
viewPager = view.findViewById(R.id.product_pick_viewpager);
tabLayout.addTab(tabLayout.newTab().setText(R.string.product_type_1));
tabLayout.addTab(tabLayout.newTab().setText(R.string.product_type_2));
tabLayout.addTab(tabLayout.newTab().setText(R.string.product_type_3));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(viewPager);
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
ProductTabPagerAdapter pagerAdapter = new ProductTabPagerAdapter(
getChildFragmentManager(),
getContext(),
(List<ArrayList<ProductModel.ODS0>>) getArguments().getSerializable(KEY_DATA)
);
viewPager.setAdapter(pagerAdapter);
viewPager.setOffscreenPageLimit(2);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
btn_product_pick_save = view.findViewById(R.id.btn_product_pick_save);
btn_product_pick_save.setOnClickListener(v -> dismiss());
viewPager.setCurrentItem(0);
}
- * Fragment 생성 주기 -> onCreate -> onViewCreated
- onViewCreated 함수에서 위젯연결 및 이벤트 처리하는게 더 깔끔한듯
- FragmentStatePagerAdapter ( ProductTabPagerAdapter )에 리스트를 PagerAdapter에 넘길때 getArguments().getSerializable(KEY_DATA) 하면 되지만
이 경우에는 리스트의 리스트를 넘겨야해서 (List<ArrayList<ProductModel.ODS0>>) 캐스팅
ProductTabPagerAdapter
public class ProductTabPagerAdapter extends FragmentStatePagerAdapter {
private Context context;
private List<ArrayList<ProductModel.ODS0>> items;
public ProductTabPagerAdapter(FragmentManager childFragmentManager, Context context, List<ArrayList<ProductModel.ODS0>> items) {
super(childFragmentManager);
this.context = context;
this.items = items;
}
@Override
public int getItemPosition(@NonNull Object object) {
return POSITION_NONE;
}
@Override
public Fragment getItem(int i) {
return ProductFilterFragment.newInstance(items.get(i));
}
@Override
public int getCount() {
return items.size();
}
@Nullable
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return context.getString(R.string.product_type_1);
case 1:
return context.getString(R.string.product_type_2);
case 2:
return context.getString(R.string.product_type_3);
default:
return null;
}
}
}
ProductFilterFragment ( 각 RecyclerView 를 가지고 있는 Fragmet )
public static ProductFilterFragment newInstance(ArrayList<ProductModel.ODS0> list) {
Bundle args = new Bundle();
args.putParcelableArrayList(KEY_DATA, list);
ProductFilterFragment fragment = new ProductFilterFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
RecyclerView recyclerView = view.findViewById(R.id.product_pick_recycler);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
adapter = new MyProductRecyclerViewAdapter(getArguments().getParcelableArrayList(KEY_DATA), mListener);
recyclerView.setAdapter(adapter);
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFilterFragmentInteractionListener) {
mListener = (OnFilterFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFilterFragmentInteractionListener {
void onFilterFragmentInteractionListener(ProductModel.ODS0 productModel);
}
리스너 연결과 어댑터에 리스트 연결
MyProductRecyclerViewAdapter (리사이클러뷰 어댑터)
public class MyProductRecyclerViewAdapter extends RecyclerView.Adapter<MyProductRecyclerViewAdapter.ViewHolder> {
private final OnFilterFragmentInteractionListener mListener;
private List<ProductModel.ODS0> productModels;
public MyProductRecyclerViewAdapter(List<ProductModel.ODS0> productModels, OnFilterFragmentInteractionListener listener) {
this.productModels = productModels;
mListener = listener;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.fragment_product_pick, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
holder.mItem = productModels.get(position);
holder.g_code.setText(productModels.get(position).getGCODE());
holder.g_name.setText(productModels.get(position).getGNAME());
holder.g_type.setText(productModels.get(position).getItem_type_nm());
holder.stk_cnt.setText(productModels.get(position).getSTKCNT().toString());
if (productModels.get(position).isSelected()) {
holder.view_foreground.setBackgroundColor(Color.LTGRAY);
} else {
holder.view_foreground.setBackgroundColor(Color.WHITE);
}
}
@Override
public int getItemCount() {
return productModels.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public final LinearLayout view_foreground;
public final View mView;
public final TextView g_code;
public final TextView g_name;
public final TextView g_type;
public final TextView stk_cnt;
public ProductModel.ODS0 mItem;
public ViewHolder(View view) {
super(view);
mView = view;
view_foreground = view.findViewById(R.id.view_foreground);
g_code = view.findViewById(R.id.g_code);
g_name = view.findViewById(R.id.g_name);
g_type = view.findViewById(R.id.g_type);
stk_cnt = view.findViewById(R.id.stk_cnt);
view_foreground.setOnClickListener(view1 -> {
if (null != mListener) {
productModels.get(getAdapterPosition()).setSelected(true);
notifyItemChanged(getAdapterPosition());
mListener.onFilterFragmentInteractionListener(mItem);
}
});
}
}
}
긴 여정 끝에 MainActivity에서 리스너를 받음
@Override
public void onFilterFragmentInteractionListener(ProductModel.ODS0 item) {
리스트 선택시 작업
}
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