Мобильное приложение для создания каталога домашней библиотеки

getAdapterPosition();if (position != RecyclerView.NO_POSITION) {listener.onItemClick(v, position); } } } }); } @Overridepublic void onBindGroupViewHolder(CatalogViewHolder holder, intflatPosition,ExpandableGroup group) {holder.setTitle(group); }public Object getItem(int position) {ExpandableListPositionelp = expandableList.getUnflattenedPosition(position);return expandableList.groups.get(elp.groupPos).getItems().get(elp.childPos); }public Catalog getCatalog(intflatPos) {ExpandableListPositionelp = expandableList.getUnflattenedPosition(flatPos);return (Catalog)expandableList.groups.get(elp.groupPos); }public void updateList(final List list) {this.originalItems = list; List groups = (ArrayList) this.originalItems;getGroups().clear();getGroups().addAll(groups);notifyDataSetChanged(); }}packagecom.example.catbooks.ui.catalogs;importandroid.app.Dialog;importandroid.os.Bundle;importandroid.view.View;importandroid.view.Window;importandroid.view.WindowManager;importandroid.widget.EditText;importandroidx.appcompat.app.AlertDialog;importandroidx.fragment.app.DialogFragment;importandroidx.lifecycle.Observer;importandroidx.lifecycle.ViewModelProvider;importcom.example.catbooks.R;importcom.example.catbooks.db.Catalog;importcom.example.catbooks.model.CatBooksViewModel;importcom.example.catbooks.utils.Utils;public class CatalogDialog extends DialogFragment {privateUtils.OnCloseDialogListener listener;public void setListener(Utils.OnCloseDialogListener listener) {this.listener = listener; }private static final String TAG = CatalogDialog.class.getSimpleName();private Catalog catalog;privateEditTextedtCatalogName;privateCatBooksViewModelcatBooksViewModel; @Overridepublic Dialog onCreateDialog(Bundle savedInstanceState) {catBooksViewModel =newViewModelProvider(getActivity()).get(CatBooksViewModel.class);catalog = (Catalog) getArguments().getSerializable("catalog");AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); View view = getActivity().getLayoutInflater().inflate(R.layout.dialog_catalog, null);edtCatalogName = (EditText) view.findViewById(R.id.edtCatalogName);if(catalog != null) {edtCatalogName.setText(catalog.getName()); }catBooksViewModel.getNameCatalog().observe(getActivity(), new Observer() { @Overridepublic void onChanged(String item) {if(item != null)edtCatalogName.setText(item); } });view.findViewById(R.id.btnYes).setOnClickListener(new View.OnClickListener() { @Overridepublic void onClick(View v) {if(catalog != null) {catalog.setName(edtCatalogName.getText().toString()); }dismiss(); } });view.findViewById(R.id.btnNo).setOnClickListener(new View.OnClickListener() { @Overridepublic void onClick(View v) {catalog = null;dismiss(); } });edtCatalogName.requestFocus();builder.setView(view); Dialog dialog = builder.create();dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);return dialog; } @Overridepublic void onStop() {super.onStop();if(listener != null && catalog != null)listener.OnCloseDialog(getActivity(), catalog); }}packagecom.example.catbooks.ui.catalogs;import static com.example.catbooks.ui.catalogs.CatalogAdapter.DOUBLE_CLICK_TIME_DELTA;import static com.example.catbooks.ui.catalogs.CatalogAdapter.lastClickTime;importandroid.app.Activity;importandroid.content.Context;importandroid.os.Bundle;importandroid.view.LayoutInflater;importandroid.view.Menu;importandroid.view.MenuInflater;importandroid.view.MenuItem;importandroid.view.View;importandroid.view.ViewGroup;importandroidx.annotation.NonNull;importandroidx.appcompat.widget.SearchView;importandroidx.fragment.app.Fragment;importandroidx.fragment.app.FragmentManager;importandroidx.fragment.app.FragmentTransaction;importandroidx.lifecycle.ViewModelProvider;importandroidx.recyclerview.widget.DefaultItemAnimator;importandroidx.recyclerview.widget.LinearLayoutManager;importandroidx.recyclerview.widget.RecyclerView;importcom.example.catbooks.MainActivity;importcom.example.catbooks.R;importcom.example.catbooks.databinding.FragmentCatalogsBinding;importcom.example.catbooks.db.Book;importcom.example.catbooks.db.Catalog;importcom.example.catbooks.db.SQLiteDB;importcom.example.catbooks.utils.Utils;import com.google.android.material.floatingactionbutton.FloatingActionButton;import com.thoughtbot.expandablerecyclerview.listeners.OnGroupClickListener;importjava.util.List;public class CatalogsFragment extends Fragment {private static final String TAG = CatalogsFragment.class.getSimpleName();;privateCatalogsViewModelcatalogsViewModel;privateFragmentCatalogsBinding binding;privateSQLiteDBdb;privateRecyclerViewrecyclerView;privateCatalogAdapter adapter;privateFloatingActionButton fab;private List items;public View onCreateView(LayoutInflaterinflater, ViewGroup container, Bundle savedInstanceState) {catalogsViewModel =newViewModelProvider(this).get(CatalogsViewModel.class);binding = FragmentCatalogsBinding.inflate(inflater, container, false); View root = binding.getRoot();db = SQLiteDB.getInstance(getActivity());setHasOptionsMenu(true);recyclerView = (RecyclerView) root.findViewById(R.id.recyclerCatalogs);recyclerView.setLayoutManager(new LinearLayoutManager(root.getContext()));recyclerView.setHasFixedSize(true);RecyclerView.ItemAnimator animator = recyclerView.getItemAnimator();if (animator instanceofDefaultItemAnimator) { ((DefaultItemAnimator) animator).setSupportsChangeAnimations(false); }items = db.getCatalogList();adapter = new CatalogAdapter(getContext(), items);recyclerView.setAdapter(adapter);adapter.setOnItemClickListener(new Utils.OnItemClickListener() { @Overridepublic void onItemClick(View itemView, int position) { Book book = (Book) adapter.getItem(position);ShowBookDialog(book); } });adapter.setOnGroupClickListener(new OnGroupClickListener() { @OverridepublicbooleanonGroupClick(intflatPos) {longclickTime = System.currentTimeMillis();if (clickTime - lastClickTime < DOUBLE_CLICK_TIME_DELTA){ShowCalalogDialog(adapter.getCatalog(flatPos));lastClickTime = 0; } else {adapter.toggleGroup(flatPos); }lastClickTime = clickTime;return false; } });return root; }public void ShowCalalogDialog(Catalog catalog) { Bundle bundle = new Bundle();bundle.putSerializable("catalog", catalog);CatalogDialogcatalogDialog = new CatalogDialog();catalogDialog.setListener(new Utils.OnCloseDialogListener() { @Overridepublic void OnCloseDialog(Activity activity, Object obj) { Catalog cat = (Catalog)obj;if(cat.getId() == 0) {db.insertCatalog(cat); } else {db.updateCatalog(cat); }items = db.getCatalogList();adapter.updateList(items); } });FragmentManager manager = getActivity().getSupportFragmentManager();FragmentTransaction transaction = manager.beginTransaction();catalogDialog.setArguments(bundle);catalogDialog.show(transaction, "catalogDialog"); }public void ShowBookDialog(Book book) { Bundle bundle = new Bundle();bundle.putSerializable("book", book);BookDialogbookDialog = new BookDialog();bookDialog.setListener(new Utils.OnCloseDialogListener() { @Overridepublic void OnCloseDialog(Activity activity, Object obj) { Book bk = (Book)obj;if(bk.getId() == 0) {db.insertBook(bk); } else {db.updateBook(bk); }items = db.getCatalogList();adapter.updateList(items); } });FragmentManager manager = getActivity().getSupportFragmentManager();FragmentTransaction transaction = manager.beginTransaction();bookDialog.setArguments(bundle);bookDialog.show(transaction, "bookDialog"); } @Overridepublic void onDestroyView() {super.onDestroyView();binding = null; } @Overridepublic void onCreateOptionsMenu(Menu menu, MenuInflaterinflater) {super.onCreateOptionsMenu(menu, inflater);menu.clear();inflater.inflate(R.menu.main, menu);MenuItem item = menu.findItem(R.id.menu_search);SearchViewsearchView = new SearchView(((MainActivity) getContext()).getSupportActionBar().getThemedContext());item.setShowAsAction(MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW | MenuItem.SHOW_AS_ACTION_IF_ROOM);item.setActionView(searchView);searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @OverridepublicbooleanonQueryTextSubmit(String query) {return false; } @OverridepublicbooleanonQueryTextChange(String newText) {adapter.getFilter().filter(newText);return true; } });searchView.setOnClickListener(new View.OnClickListener() { @Overridepublic void onClick(View v) { } } ); } @Overridepublic void onResume() {super.onResume();FloatingActionButton fab = (FloatingActionButton) getActivity().findViewById(R.id.fab);fab.show();fab.setOnClickListener(new View.OnClickListener() { @Overridepublic void onClick(View view) {ShowCalalogDialog(new Catalog("", null, 0)); } }); } @Overridepublic void onAttach(@NonNull Context context) {super.onAttach(context); }}packagecom.example.catbooks.ui.catalogs;importandroidx.lifecycle.LiveData;importandroidx.lifecycle.MutableLiveData;importandroidx.lifecycle.ViewModel;public class CatalogsViewModel extends ViewModel {privateMutableLiveData mText;publicCatalogsViewModel() {mText = new MutableLiveData<>();mText.setValue("This is home fragment"); }publicLiveData getText() {returnmText; }}packagecom.example.catbooks.ui.catalogs;import static android.view.animation.Animation.RELATIVE_TO_SELF;importandroid.view.View;importandroid.view.animation.RotateAnimation;importandroid.widget.ImageView;importandroid.widget.TextView;importcom.example.catbooks.R;importcom.example.catbooks.db.Catalog;importcom.thoughtbot.expandablerecyclerview.models.ExpandableGroup;import com.thoughtbot.expandablerecyclerview.viewholders.GroupViewHolder;public class CatalogViewHolder extends GroupViewHolder {privateTextViewcatalogName;privateImageView arrow;publicCatalogViewHolder(View itemView) {super(itemView);catalogName = (TextView) itemView.findViewById(R.id.itemCatalogName);arrow = (ImageView) itemView.findViewById(R.id.itemCatalogArrow); }public void setTitle(ExpandableGroup item) {if (item instanceof Catalog) {catalogName.setText(item.getTitle()); } } @Overridepublic void expand() {animateExpand(); } @Overridepublic void collapse() {animateCollapse(); }private void animateExpand() {RotateAnimation rotate =newRotateAnimation(360, 180, RELATIVE_TO_SELF, 0.5f, RELATIVE_TO_SELF, 0.5f);rotate.setDuration(300);rotate.setFillAfter(true);arrow.setAnimation(rotate); }private void animateCollapse() {RotateAnimation rotate =newRotateAnimation(180, 360, RELATIVE_TO_SELF, 0.5f, RELATIVE_TO_SELF, 0.5f);rotate.setDuration(300);rotate.setFillAfter(true);arrow.setAnimation(rotate); }}ПРИЛОЖЕНИЕББлок-схемыалгоритмаРисунок Б.1 – Блок-схема создания новой книги