save folders data in database

app/src/main/java/com/example/mynotepad/Dialogs/FoldersCustomDialog/CreateNewFolderDialog.java

@@ -2,6 +2,7 @@ package com.example.mynotepad.Dialogs.FoldersCustomDialog;
 
 import android.app.Activity;
 import android.app.Dialog;
+import android.content.Context;
 import android.graphics.drawable.ColorDrawable;
 import android.view.View;
 import android.widget.EditText;
@@ -9,29 +10,35 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import com.example.mynotepad.MainActivity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.FoldersEntity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.R;
 
 import java.util.ArrayList;
+import java.util.List;
 
 public class CreateNewFolderDialog {
-    private TextView cancel , done;
+    private TextView cancel, done;
     private EditText folderName;
-    private Activity activity;
+    private final OnFolderCreatedListener listener;
 
-    public void showDialog(Activity activity){
-        this.activity = activity;
-        Dialog dialog = new Dialog(activity);
+    public CreateNewFolderDialog(OnFolderCreatedListener listener) {
+        this.listener = listener;
+    }
+
+    public void showDialog(Context context) {
+        Dialog dialog = new Dialog(context);
         dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
         dialog.setCancelable(true);
         dialog.setContentView(R.layout.dialog_create_new_folder);
         cancel = dialog.findViewById(R.id.cancel);
         done = dialog.findViewById(R.id.done);
         folderName = dialog.findViewById(R.id.folderName);
-        addListener(dialog);
+        addListener(dialog ,context);
         dialog.show();
     }
 
-    private void addListener(final Dialog dialog) {
+    private void addListener(final Dialog dialog , final Context context) {
         cancel.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -42,33 +49,37 @@ public class CreateNewFolderDialog {
         done.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                if (folderNameIsAcceptable(folderName.getText().toString())) {
-                    //save new folder in sharedPreferences
-                    ArrayList<String> foldersArray = MainActivity.sharedPreferencesClass.getArrayFolders(activity,"folders");
-                    if (foldersArray == null)// if it is the first folder we are creating this  array will be null
-                        foldersArray = new ArrayList<>();
-                    foldersArray.add(folderName.getText().toString());
-                    MainActivity.sharedPreferencesClass.saveArrayFolders(activity ,foldersArray , "folders");
+                if (folderNameIsAcceptable(folderName.getText().toString() , context)) {
+                    //save new folder in dataBase
+                    FoldersEntity folder = new FoldersEntity(folderName.getText().toString());
+                    NoteDataBase.getInstance(context).foldersDAO().insertFolder(folder); // such this method
+                    listener.onCreated(folder);
+
                     dialog.dismiss();
                 }
             }
         });
     }
 
-    private boolean folderNameIsAcceptable(String newFolderName) {
-        if (!newFolderName.equals("")){
-            ArrayList<String> foldersArray = MainActivity.sharedPreferencesClass.getArrayFolders(activity,"folders");
-            if (foldersArray == null)return true;//if it is first time we wanna create a folder no need to check being unique
-            for (String folderName : foldersArray){
-                if (folderName.equals(newFolderName)) {
-                    Toast.makeText(activity , "this folder already exists" , Toast.LENGTH_SHORT).show();
+    private boolean folderNameIsAcceptable(String newFolderName , Context context) {
+        if (!newFolderName.equals("")) {
+            List<FoldersEntity> foldersArray = NoteDataBase.getInstance(context).foldersDAO().getAllFolders();
+            if (foldersArray == null)
+                return true;//if it is first time we wanna create a folder no need to check being unique
+            for (int i = 0; i < foldersArray.size(); i++) {
+                System.out.println(foldersArray.get(i).getFolderName());
+                if (foldersArray.get(i).getFolderName().equals(newFolderName)) {
+                    Toast.makeText(context, "this folder already exists", Toast.LENGTH_SHORT).show();
                     return false;
                 }
             }
             return true;
         }
-        Toast.makeText(activity ,"you should enter a name to create new folder",Toast.LENGTH_SHORT).show();
+        Toast.makeText(context, "you should enter a name to create new folder", Toast.LENGTH_SHORT).show();
         return false;
     }
 
+    public interface OnFolderCreatedListener {
+        void onCreated(FoldersEntity folder);
+    }
 }

app/src/main/java/com/example/mynotepad/Dialogs/FoldersCustomDialog/FolderRecyclerViewAdapter.java

@@ -6,16 +6,19 @@ import android.view.ViewGroup;
 import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.FoldersEntity;
 import com.example.mynotepad.R;
 import java.util.ArrayList;
+import java.util.List;
 
 public class FolderRecyclerViewAdapter extends RecyclerView.Adapter<FolderRecyclerViewAdapter.ViewHolder> {
 
-    private ArrayList<String> foldersName;
+    private List<FoldersEntity> foldersName;
     private Context context;
     private OnFolderClickListener onFolderClickListener;
 
-    public FolderRecyclerViewAdapter(ArrayList<String> foldersName , Context context) {
+    public FolderRecyclerViewAdapter(List<FoldersEntity> foldersName , Context context) {
         this.foldersName = foldersName;
         this.context = context;
     }
@@ -29,7 +32,7 @@ public class FolderRecyclerViewAdapter extends RecyclerView.Adapter<FolderRecycl
 
     @Override
     public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
-        holder.folderName.setText(foldersName.get(position));
+        holder.folderName.setText(foldersName.get(position).getFolderName());
     }
 
     @Override

app/src/main/java/com/example/mynotepad/Dialogs/FoldersCustomDialog/FoldersDialog.java

 package com.example.mynotepad.Dialogs.FoldersCustomDialog;
 
-import android.app.Activity;
 import android.app.Dialog;
+import android.content.Context;
 import android.graphics.drawable.ColorDrawable;
 import android.view.View;
 import android.widget.LinearLayout;
 
+import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
-import com.example.mynotepad.MainActivity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.FoldersEntity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.R;
 
-public class FoldersDialog {
+public class FoldersDialog extends Dialog{
     private RecyclerView recyclerView;
     private LinearLayout addNewFolder;
     private String selectedFolderName;
     private FolderRecyclerViewAdapter folderRecyclerViewAdapter;
-    public void showDialog(final Activity activity){
-        final Dialog dialog = new Dialog(activity);
+
+    public FoldersDialog(@NonNull final Context context) {
+        super(context);
+        final Dialog dialog = new Dialog(context);
         dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
         dialog.setCancelable(true);
         dialog.setContentView(R.layout.dialog_folders);
         addNewFolder = dialog.findViewById(R.id.addFolder);
         recyclerView = dialog.findViewById(R.id.recyclerView2);
-        if (MainActivity.sharedPreferencesClass.getArrayFolders(activity,"folders")!= null) {
-            folderRecyclerViewAdapter = new FolderRecyclerViewAdapter(MainActivity.sharedPreferencesClass.getArrayFolders(activity, "folders"), activity);
+        folderRecyclerViewAdapter = new FolderRecyclerViewAdapter(NoteDataBase.getInstance(context).foldersDAO().getAllFolders(), context);
         recyclerView.setAdapter(folderRecyclerViewAdapter);
-            recyclerView.setLayoutManager(new LinearLayoutManager(activity, LinearLayoutManager.VERTICAL, false));
+        recyclerView.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false));
         folderRecyclerViewAdapter.setOnFolderClickListener(new OnFolderClickListener() {
             @Override
             public void itemClicked(String folderName) {
                 selectedFolderName = folderName;
                 dialog.dismiss();
             }
-            });
+
+            @Override
+            public void itemLongClicked() {
+
             }
+        });
         dialog.show();
 
         addNewFolder.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                CreateNewFolderDialog createNewFolderDialog = new CreateNewFolderDialog();
-                createNewFolderDialog.showDialog(activity);
-                folderRecyclerViewAdapter.notifyDataSetChanged();
+                CreateNewFolderDialog createNewFolderDialog = new CreateNewFolderDialog(new CreateNewFolderDialog.OnFolderCreatedListener() {
+                    @Override
+                    public void onCreated(FoldersEntity folder) {
+                        folderRecyclerViewAdapter.notifyDataSetChanged(); // call this method back when you create the directory
+                    }
+                });
+                createNewFolderDialog.showDialog(context);
             }
         });
     }

app/src/main/java/com/example/mynotepad/Dialogs/FoldersCustomDialog/OnFolderClickListener.java

 package com.example.mynotepad.Dialogs.FoldersCustomDialog;
 
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.FoldersEntity;
+
 public interface OnFolderClickListener {
     void itemClicked(String folderName);
+    void itemLongClicked();
 }

app/src/main/java/com/example/mynotepad/MainActivity.java

@@ -27,7 +27,7 @@ import com.google.android.material.navigation.NavigationView;
 
 public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
 
-    public static NoteDataBase noteDataBase;
+    private NoteDataBase noteDataBase;
     private DrawerLayout drawerLayout;
     private ImageView theme;
     private NavigationView navigationView;
@@ -59,8 +59,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
     }
 
     private void init() {
-        noteDataBase = Room.databaseBuilder(this, NoteDataBase.class, "RoomDb").fallbackToDestructiveMigration().allowMainThreadQueries().build();
-
+        noteDataBase = NoteDataBase.getInstance(this);
         drawerLayout = findViewById(R.id.drawerLayout);
         Toolbar toolbar = findViewById(R.id.toolbar_main);
         navigationView = findViewById(R.id.main_menu);//menu drawer in ui

app/src/main/java/com/example/mynotepad/MenuFeatures/AllArchivedNotes/ArchivedNoesListFragment.java

@@ -23,6 +23,7 @@ import com.example.mynotepad.MenuFeatures.AllArchivedNotes.MyArchivedNotesRecycl
 import com.example.mynotepad.MenuFeatures.AllArchivedNotes.MyArchivedNotesRecyclerView.OnArchivedItemClickListener;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.DateEntity;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.Note;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.MyNote;
 import com.example.mynotepad.MenuFeatures.Calender.MyCalenderRecyclerView.TimePicker.MyDate;
 import com.example.mynotepad.MenuFeatures.CustomToolbarOption;
@@ -34,8 +35,6 @@ import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import java.util.ArrayList;
 import java.util.List;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
-
 
 public class ArchivedNoesListFragment extends Fragment {
     private FloatingActionButton addNoteButton;
@@ -117,7 +116,7 @@ public class ArchivedNoesListFragment extends Fragment {
                     bundle.putString("noteDateType", item.getType());
                     //change the fragment
                     navController.navigate(R.id.action_archivedNoesListFragment_to_noteFragment3, bundle);
-                } else if (item.getType().equals("date")) {
+                } else if (item.getType().equals("date")) {//todo date should be removed
                     //set noteFragment data
                     final Bundle bundle = new Bundle();
                     bundle.putString("title", item.getTitle());
@@ -171,15 +170,15 @@ public class ArchivedNoesListFragment extends Fragment {
 
     private void updateToUnarchiveInDataBase() {
         if (chosenDateOrNote.getType().equals("note")) {
-            noteDataBase.noteDao().updateNote(chosenDateOrNote.getTitle(), chosenDateOrNote.getDescription(), false, chosenDateOrNote.getId() , chosenDateOrNote.getFolders());
+            NoteDataBase.getInstance(getContext()).noteDao().updateNote(chosenDateOrNote.getTitle(), chosenDateOrNote.getDescription(), false, chosenDateOrNote.getId() , chosenDateOrNote.getFolders());
         } else if (chosenDateOrNote.getType().equals("date")) {
-            noteDataBase.dateNoreDAO().updateDate(chosenDateOrNote.getTitle(), chosenDateOrNote.getDescription(), false, chosenDateOrNote.getId() , chosenDateOrNote.getFolders());
+            NoteDataBase.getInstance(getContext()).dateNoreDAO().updateDate(chosenDateOrNote.getTitle(), chosenDateOrNote.getDescription(), false, chosenDateOrNote.getId() , chosenDateOrNote.getFolders());
         }
     }
 
 
     private void setAllNoteListAndTitles() {
-        entityNotes = noteDataBase.noteDao().getAll();
+        entityNotes = NoteDataBase.getInstance(getContext()).noteDao().getAll();
         myNotes = new ArrayList<>();
         for (Note note : entityNotes) {
             MyNote myNote = new MyNote(note.getTitle(), note.getDescription(), note.isarchived(), note.getID() , note.getFolders());
@@ -189,7 +188,7 @@ public class ArchivedNoesListFragment extends Fragment {
 
     private void setAllDateNoteListAndTitles() {
         //get data from database to set in recyclerView
-        entityDates = noteDataBase.dateNoreDAO().getAllDateNotes();
+        entityDates = NoteDataBase.getInstance(getContext()).dateNoreDAO().getAllDateNotes();
         myDates = new ArrayList<>();
         for (DateEntity dateEntity : entityDates) {
             MyDate myDate = new MyDate(dateEntity.getDate(), dateEntity.getDescription(), dateEntity.isarchived(), dateEntity.getID() , dateEntity.getFolders());

app/src/main/java/com/example/mynotepad/MenuFeatures/AllNotes/AllNotesListFragment.java

 package com.example.mynotepad.MenuFeatures.AllNotes;
 
-import android.app.Activity;
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
@@ -23,6 +22,7 @@ import com.example.mynotepad.Dialogs.CustomDialog;
 import com.example.mynotepad.Dialogs.FoldersCustomDialog.FoldersDialog;
 import com.example.mynotepad.Dialogs.onCustomDialogClickListener;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.Note;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.MyAllNotesAdaptor;
 import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.MyNote;
 import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.OnAllNotesItemClickListener;
@@ -35,7 +35,6 @@ import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import java.util.ArrayList;
 import java.util.List;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
 
 
 public class AllNotesListFragment extends Fragment {
@@ -51,7 +50,6 @@ public class AllNotesListFragment extends Fragment {
     private NavController navController;
     private LinearLayout allNotesListLayout;
     private CustomDialog customDialog;
-    public static Activity activityyyyyyyyyyyy;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -66,7 +64,6 @@ public class AllNotesListFragment extends Fragment {
         init(view);
         setBg(Utils.sTheme);
         addListeners();
-        activityyyyyyyyyyyy = getActivity();
     }
 
 
@@ -159,8 +156,7 @@ public class AllNotesListFragment extends Fragment {
 
             @Override
             public void onFolderClicked() {
-                FoldersDialog foldersDialog = new FoldersDialog();
-                foldersDialog.showDialog(getActivity());
+                FoldersDialog foldersDialog = new FoldersDialog(getContext());
             }
         });
     }
@@ -176,7 +172,7 @@ public class AllNotesListFragment extends Fragment {
         customDialog.setOnCustomDialogClickListener(new onCustomDialogClickListener() {
             @Override
             public void yesClicked() {
-                noteDataBase.noteDao().deleteNote(note);
+                NoteDataBase.getInstance(getContext()).noteDao().deleteNote(note);
                 myNotes.remove(myChosenNote);
                 myAdaptor.notifyDataSetChanged();
             }
@@ -205,7 +201,7 @@ public class AllNotesListFragment extends Fragment {
     }
 
     private void updatearchivedNotesInDataBase() {
-        noteDataBase.noteDao().updateNote(myChosenNote.getTitle(), myChosenNote.getDescription()
+        NoteDataBase.getInstance(getContext()).noteDao().updateNote(myChosenNote.getTitle(), myChosenNote.getDescription()
                 , myChosenNote.isArchived(), myChosenNote.getId(), myChosenNote.getFolders());
     }
 
@@ -238,7 +234,7 @@ public class AllNotesListFragment extends Fragment {
 
 
     private void setAllNoteListAndTitles() {
-        entityNotes = noteDataBase.noteDao().getAll();
+        entityNotes = NoteDataBase.getInstance(getContext()).noteDao().getAll();
         myNotes = new ArrayList<>();
         for (Note note : entityNotes) {
             MyNote myNote = new MyNote(note.getTitle(), note.getDescription(), note.isarchived(), note.getID(), note.getFolders());

app/src/main/java/com/example/mynotepad/MenuFeatures/AllNotes/DataBase/FoldersDAO.java

+package com.example.mynotepad.MenuFeatures.AllNotes.DataBase;
+
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.Query;
+
+import java.util.List;
+
+@Dao
+public interface FoldersDAO {
+
+    // a method list type
+    @Query("SELECT * FROM FoldersEntity")
+    List<FoldersEntity> getAllFolders();
+
+    //insert data in database
+    @Insert
+    void insertFolder(FoldersEntity foldersEntity);
+
+    //delete data in database
+    @Delete
+    void deleteFolder(FoldersEntity foldersEntity);
+
+
+    //update data
+    @Query("UPDATE FoldersEntity SET folderName = :folderName  Where ID = :id")
+    void updateDate(String folderName, int id);
+}

app/src/main/java/com/example/mynotepad/MenuFeatures/AllNotes/DataBase/FoldersEntity.java

+package com.example.mynotepad.MenuFeatures.AllNotes.DataBase;
+
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+
+
+@Entity
+public class FoldersEntity {
+    @PrimaryKey(autoGenerate = true)
+    int ID;
+    @ColumnInfo(name = "FolderName")
+    String folderName;
+
+
+    public FoldersEntity(String folderName) {
+        this.folderName = folderName;
+    }
+
+    public int getID() {
+        return ID;
+    }
+
+    public String getFolderName() {
+        return folderName;
+    }
+}
\ No newline at end of file

app/src/main/java/com/example/mynotepad/MenuFeatures/AllNotes/DataBase/NoteDataBase.java

 package com.example.mynotepad.MenuFeatures.AllNotes.DataBase;
 
+import android.content.Context;
+
 import androidx.room.Database;
+import androidx.room.Room;
 import androidx.room.RoomDatabase;
 import androidx.room.TypeConverters;
 
-@Database(entities = {Note.class, DateEntity.class ,PicsEntity.class},version = 1)
+@Database(entities = {Note.class, DateEntity.class ,PicsEntity.class , FoldersEntity.class},version = 1)
 @TypeConverters({Converters.class})
 public abstract class NoteDataBase extends RoomDatabase {
 
+    private static NoteDataBase instance;
+
     public abstract NoteDAO noteDao();
     public abstract DateNoreDAO dateNoreDAO();
     public abstract PicsDao picsDao();
+    public abstract FoldersDAO foldersDAO();
+
+    public static NoteDataBase getInstance(Context context) {
+        if (instance == null)
+            instance = Room.databaseBuilder(context, NoteDataBase.class, "RoomDb")
+                    .fallbackToDestructiveMigration()
+                    .allowMainThreadQueries() // this code may block the main thread, every database transaction must be executed on background thread no
+                    .build();// as long as this method is called no, if you remove this method then you should call every single method of your DAOs on a background thread
+        return instance;
+    }
 }

app/src/main/java/com/example/mynotepad/MenuFeatures/AllNotes/Note/NoteFragment.java

@@ -21,12 +21,12 @@ import com.example.mynotepad.MenuFeatures.AllArchivedNotes.ArchivedNoesListFragm
 import com.example.mynotepad.MenuFeatures.AllNotes.AllNotesListFragment;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.DateEntity;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.Note;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.Calender.CalenderNotesListFragment;
 import com.example.mynotepad.MenuFeatures.Utils;
 import com.example.mynotepad.R;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -101,10 +101,10 @@ public class NoteFragment extends Fragment {
                 else if (type.equals("noteDate")) {
                     System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++");
                     if (noteDateType.equals("note")) {
-                        noteDataBase.noteDao().updateNote(titleTxt.getText().toString(), bodyTxt.getText().toString(),
+                        NoteDataBase.getInstance(getContext()).noteDao().updateNote(titleTxt.getText().toString(), bodyTxt.getText().toString(),
                                 true, ArchivedNoesListFragment.chosenDateOrNote.getId() , null);//todo ooooooooooooooooooooooo
                     } else if (noteDateType.equals("date")) {
-                        noteDataBase.dateNoreDAO().updateDate(titleTxt.getText().toString(), bodyTxt.getText().toString(),
+                        NoteDataBase.getInstance(getContext()).dateNoreDAO().updateDate(titleTxt.getText().toString(), bodyTxt.getText().toString(),
                                 true, ArchivedNoesListFragment.chosenDateOrNote.getId() , ArchivedNoesListFragment.chosenDateOrNote.getFolders());
                     }
                 }
@@ -123,10 +123,10 @@ public class NoteFragment extends Fragment {
     private void saveNote() {
         if (isAnewNote) {
             note = new Note(titleTxt.getText().toString(), bodyTxt.getText().toString(), false , null);//todo oooooooooooooooooooo add folders
-            noteDataBase.noteDao().insertNote(note);
+            NoteDataBase.getInstance(getContext()).noteDao().insertNote(note);
             Toast.makeText(getActivity(), "saved", Toast.LENGTH_SHORT).show();
         } else {
-            noteDataBase.noteDao().updateNote(titleTxt.getText().toString(), bodyTxt.getText().toString(),
+            NoteDataBase.getInstance(getContext()).noteDao().updateNote(titleTxt.getText().toString(), bodyTxt.getText().toString(),
                     AllNotesListFragment.myChosenNote.isArchived(), AllNotesListFragment.myChosenNote.getId() ,AllNotesListFragment.myChosenNote.getFolders());
             Toast.makeText(getActivity(), "updated", Toast.LENGTH_SHORT).show();
         }
@@ -136,10 +136,10 @@ public class NoteFragment extends Fragment {
     private void saveCalenderNote() {
         if (isAnewNote) {
             dateEntity = new DateEntity(titleTxt.getText().toString(), bodyTxt.getText().toString(), false , null); // todo ooooooooooooooooooooooooooo add foldesr==rs
-            noteDataBase.dateNoreDAO().insertDateNote(dateEntity);
+            NoteDataBase.getInstance(getContext()).dateNoreDAO().insertDateNote(dateEntity);
             Toast.makeText(getActivity(), "saved", Toast.LENGTH_SHORT).show();
         } else {
-            noteDataBase.dateNoreDAO().updateDate(titleTxt.getText().toString(), bodyTxt.getText().toString(),
+            NoteDataBase.getInstance(getContext()).dateNoreDAO().updateDate(titleTxt.getText().toString(), bodyTxt.getText().toString(),
                     CalenderNotesListFragment.myChosenDateNote.isArchived(), CalenderNotesListFragment.myChosenDateNote.getId() ,CalenderNotesListFragment.myChosenDateNote.getFolders() );
             Toast.makeText(getActivity(), "updated", Toast.LENGTH_SHORT).show();
         }

app/src/main/java/com/example/mynotepad/MenuFeatures/Calender/CalenderNotesListFragment.java

 package com.example.mynotepad.MenuFeatures.Calender;
 
 import android.app.AlertDialog;
+
 import android.content.DialogInterface;
-import android.content.Intent;
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
@@ -21,6 +21,7 @@ import android.widget.LinearLayout;
 import android.widget.Toast;
 
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.DateEntity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.Calender.MyCalenderRecyclerView.MyCalenderAdaptor;
 import com.example.mynotepad.MenuFeatures.Calender.MyCalenderRecyclerView.OnCalenderItemClickListener;
 import com.example.mynotepad.MenuFeatures.Calender.MyCalenderRecyclerView.TimePicker.MyDate;
@@ -33,8 +34,6 @@ import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import java.util.ArrayList;
 import java.util.List;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
-
 
 public class CalenderNotesListFragment extends Fragment {
 
@@ -178,7 +177,7 @@ public class CalenderNotesListFragment extends Fragment {
         alert.setPositiveButton("yes", new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialogInterface, int i) {
-                noteDataBase.dateNoreDAO().deleteDateNote(entityDates.get(myDates.indexOf(myChosenDateNote)));
+                NoteDataBase.getInstance(getContext()).dateNoreDAO().deleteDateNote(entityDates.get(myDates.indexOf(myChosenDateNote)));
                 myDates.remove(myChosenDateNote);
                 myAdaptor.notifyDataSetChanged();
             }
@@ -209,13 +208,13 @@ public class CalenderNotesListFragment extends Fragment {
     }
 
     private void updatearchivedDatesInDataBase() {
-        noteDataBase.dateNoreDAO().updateDate(myChosenDateNote.getDate(), myChosenDateNote.getDescription(), myChosenDateNote.isArchived(), myChosenDateNote.getId() , myChosenDateNote.getFolders());
+        NoteDataBase.getInstance(getContext()).dateNoreDAO().updateDate(myChosenDateNote.getDate(), myChosenDateNote.getDescription(), myChosenDateNote.isArchived(), myChosenDateNote.getId() , myChosenDateNote.getFolders());
     }
 
 
     private void setAllDateNoteListAndTitles() {
         //get data from database to set in recyclerView
-        entityDates = noteDataBase.dateNoreDAO().getAllDateNotes();
+        entityDates = NoteDataBase.getInstance(getContext()).dateNoreDAO().getAllDateNotes();
         myDates = new ArrayList<>();
         for (DateEntity dateEntity : entityDates) {
             MyDate myDate = new MyDate(dateEntity.getDate(), dateEntity.getDescription(), dateEntity.isarchived(), dateEntity.getID() , dateEntity.getFolders());

app/src/main/java/com/example/mynotepad/MenuFeatures/Calender/MyCalenderRecyclerView/TimePicker/TimePickerFragment.java

@@ -21,6 +21,7 @@ import android.widget.Toast;
 import com.alirezaafkar.sundatepicker.DatePicker;
 import com.alirezaafkar.sundatepicker.interfaces.DateSetListener;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.DateEntity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.Calender.Date;
 import com.example.mynotepad.MenuFeatures.Utils;
 import com.example.mynotepad.R;
@@ -29,8 +30,6 @@ import com.google.android.material.snackbar.Snackbar;
 
 import java.util.Calendar;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
-
 public class TimePickerFragment extends Fragment {
 
     private DateEntity dateEntity;
@@ -137,6 +136,6 @@ public class TimePickerFragment extends Fragment {
     private void saveDateNote() {
         //todo save in data base
         dateEntity = new DateEntity(chosenDate.getText().toString(), description.getText().toString(), false , null);//todo ooooooooo add folders
-        noteDataBase.dateNoreDAO().insertDateNote(dateEntity);
+        NoteDataBase.getInstance(getContext()).dateNoreDAO().insertDateNote(dateEntity);
     }
 }
\ No newline at end of file

app/src/main/java/com/example/mynotepad/MenuFeatures/Folders/FoldersListFragment.java

 package com.example.mynotepad.MenuFeatures.Folders;
 
-import android.app.AlertDialog;
-import android.content.Context;
-import android.content.SharedPreferences;
+
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
@@ -15,19 +13,12 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
-
 import com.example.mynotepad.Dialogs.FoldersCustomDialog.FolderRecyclerViewAdapter;
-import com.example.mynotepad.Dialogs.FoldersCustomDialog.OnFolderClickListener;
-import com.example.mynotepad.MainActivity;
-import com.example.mynotepad.MenuFeatures.AllNotes.AllNotesListFragment;
+import com.example.mynotepad.MainActivity;;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.CustomToolbarOption;
 import com.example.mynotepad.MenuFeatures.Utils;
 import com.example.mynotepad.R;
-import com.google.gson.Gson;
-import com.google.gson.reflect.TypeToken;
-
-import java.lang.reflect.Type;
-import java.util.ArrayList;
 
 
 public class FoldersListFragment extends Fragment {
@@ -53,6 +44,17 @@ public class FoldersListFragment extends Fragment {
 
     }
 
+    private void setBg(String sTheme) {
+        switch (sTheme) {
+            case "dark":
+                listLayout.setBackgroundResource(R.drawable.main_bg_dark);
+                break;
+            case "bright":
+                listLayout.setBackgroundResource(R.drawable.main_bg_bright);
+                break;
+        }
+    }
+
     private void init(View view) {
         listLayout = view.findViewById(R.id.allNoteListLayout);
         recyclerView = view.findViewById(R.id.recyclerView);
@@ -60,34 +62,82 @@ public class FoldersListFragment extends Fragment {
         customToolbarOption.setVisibility(View.GONE);
         allNoteToolBar = view.findViewById(R.id.toolbar);
         allNoteToolBar.setEnabled(false);
-      //  if (MainActivity.sharedPreferencesClass.getArrayFolders(getActivity(),"folders")!= null) {
-        SharedPreferences  sharedPreferences = getActivity().getPreferences(Context.MODE_PRIVATE);
-        Gson gson = new Gson();
-        String json = sharedPreferences.getString("folders", null);
-        System.out.println(json+"+++++++++++++++++++++++++++++++++++++++++++++++");
-
-        Type type = new TypeToken<ArrayList<String>>() {}.getType();
-        ArrayList<String> a = gson.fromJson(json, type);
-            folderRecyclerViewAdapter = new FolderRecyclerViewAdapter(a, getActivity());
+        folderRecyclerViewAdapter = new FolderRecyclerViewAdapter(NoteDataBase.getInstance(getContext()).foldersDAO().getAllFolders(), getActivity());
         recyclerView.setAdapter(folderRecyclerViewAdapter);
         recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false));
-            folderRecyclerViewAdapter.setOnFolderClickListener(new OnFolderClickListener() {
-                @Override
-                public void itemClicked(String folderName) {
+        // folderRecyclerViewAdapter.setOnFolderClickListener(new OnFolderClickListener() {
+//            @Override
+//            public void itemClicked(String folderName) {
+//
+//            }
+//        });
+//    }
 
-                }
-            });
-       // }
-    }
+//    private void addListeners() {
+//
+//        // add listener to recyclerView
+//        folderRecyclerViewAdapter.setOnFolderClickListener(new OnFolderClickListener() {
+//            @Override
+//            public void itemClicked(String folderName) {
+//
+//                if (item.getType().equals("note")) {
+//                    //set noteFragment data
+//                    final Bundle bundle = new Bundle();
+//                    bundle.putString("title", item.getTitle());
+//                    bundle.putString("bodyTxt", item.getDescription());
+//                    bundle.putString("type", "noteDate");
+//                    bundle.putString("noteDateType", item.getType());
+//                    //change the fragment
+//                    navController.navigate(R.id.action_archivedNoesListFragment_to_noteFragment3, bundle);
+//                } else if (item.getType().equals("date")) {
+//                    //set noteFragment data
+//                    final Bundle bundle = new Bundle();
+//                    bundle.putString("title", item.getTitle());
+//                    bundle.putString("bodyTxt", item.getDescription());
+//                    bundle.putString("type", "noteDate");
+//                    bundle.putString("noteDateType", item.getType());
+//                    //change the fragment
+//                    navController.navigate(R.id.action_archivedNoesListFragment_to_noteFragment3, bundle);
+//                }
+//
+//            }
+//
+//            @Override
+//            public void onItemLongClicked(DateOrNote item) {
+//                chosenDateOrNote = item;
+//                customToolbarOption.setVisibility(View.VISIBLE);
+//                customToolbarOption.hideRecycleBin();
+//                customToolbarOption.hideFolder();
+//                allNoteToolBar.setVisibility(View.GONE);
+//            }
+//        });
+//
+//        //add listener to custom toolbar option and set being archived or not to be saved in database
+//        customToolbarOption.setCustomToolbarOptionListener(new CustomToolbarOptionListener() {
+//            @Override
+//            public void onStarClicked() {
+//                customToolbarOption.setBlackStar();
+//                myarchivedAdaptor.getDateOrNoteList().remove(chosenDateOrNote);
+//                updateToUnarchiveInDataBase();
+//                Toast.makeText(getContext(), "unarchived", Toast.LENGTH_SHORT).show();
+//            }
+//
+//
+//            @Override
+//            public void onDeleteClicked() {
+//            }
+//
+//            @Override
+//            public void onCloseClicked() {
+//                closeClicked(customToolbarOption);
+//            }
+//
+//            @Override
+//            public void onFolderClicked() {
+//
+//            }
+//        });
+//    }
 
-    private void setBg(String sTheme) {
-        switch (sTheme) {
-            case "dark":
-                listLayout.setBackgroundResource(R.drawable.main_bg_dark);
-                break;
-            case "bright":
-                listLayout.setBackgroundResource(R.drawable.main_bg_bright);
-                break;
-        }
     }
 }
\ No newline at end of file

app/src/main/java/com/example/mynotepad/MenuFeatures/Pics/ChoosingPicsFragment.java

@@ -23,6 +23,7 @@ import android.widget.Toast;
 import com.example.mynotepad.Dialogs.AddTxtToPicsDialog.AddTextToPicDialog;
 import com.example.mynotepad.Dialogs.AddTxtToPicsDialog.OnSavePicListenerClick;
 import com.example.mynotepad.MainActivity;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.PicsEntity;
 import com.example.mynotepad.MenuFeatures.Pics.Camera.CameraActivity;
 import com.example.mynotepad.MenuFeatures.Utils;
@@ -35,7 +36,6 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
 import static com.example.mynotepad.MenuFeatures.Pics.Camera.CameraActivity.getOutputMediaFile;
 
 public class ChoosingPicsFragment extends Fragment {
@@ -144,7 +144,7 @@ public class ChoosingPicsFragment extends Fragment {
             @Override
             public void saveClicked(String editTextTxt) {
                 PicsEntity picsEntity = new PicsEntity(newFilePath, editTextTxt);
-                noteDataBase.picsDao().insertPicsNote(picsEntity);
+                NoteDataBase.getInstance(getContext()).picsDao().insertPicsNote(picsEntity);
             }
         });
     }

app/src/main/java/com/example/mynotepad/MenuFeatures/Pics/Gallery/NotedPicsListFragment.java

@@ -12,15 +12,11 @@ import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Toast;
 
 import com.example.mynotepad.Dialogs.CustomDialog;
 import com.example.mynotepad.Dialogs.onCustomDialogClickListener;
-import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.DateEntity;
-import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.Note;
+import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.NoteDataBase;
 import com.example.mynotepad.MenuFeatures.AllNotes.DataBase.PicsEntity;
-import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.MyNote;
-import com.example.mynotepad.MenuFeatures.AllNotes.MyNoteRecyclerView.OnAllNotesItemClickListener;
 import com.example.mynotepad.MenuFeatures.CustomToolbarOption;
 import com.example.mynotepad.MenuFeatures.Pics.PicsActivity;
 import com.example.mynotepad.R;
@@ -28,7 +24,6 @@ import com.example.mynotepad.R;
 import java.util.ArrayList;
 import java.util.List;
 
-import static com.example.mynotepad.MainActivity.noteDataBase;
 
 public class NotedPicsListFragment extends Fragment {
 
@@ -62,7 +57,7 @@ public class NotedPicsListFragment extends Fragment {
     }
 
     private void setData() {
-        picsEntityList = noteDataBase.picsDao().getAllPicsNotes();
+        picsEntityList = NoteDataBase.getInstance(getContext()).picsDao().getAllPicsNotes();
         myGalleryPics = new ArrayList<>();
         for (PicsEntity picsEntity : picsEntityList) {
             MyGalleryPic myGalleryPic = new MyGalleryPic(picsEntity.getUrl(), picsEntity.getTxt());
@@ -102,7 +97,7 @@ public class NotedPicsListFragment extends Fragment {
         customDialog.setOnCustomDialogClickListener(new onCustomDialogClickListener() {
             @Override
             public void yesClicked() {
-                noteDataBase.picsDao().deletePicsNote(pic);
+                NoteDataBase.getInstance(getContext()).picsDao().deletePicsNote(pic);
                 myGalleryPics.remove(myChosenPic);
                 adapter.notifyDataSetChanged();
             }

app/src/main/java/com/example/mynotepad/SharedPreferencesClass.java

@@ -28,22 +28,4 @@ public class SharedPreferencesClass {
         Utils.sTheme = sharedPref.getString(activity.getString(R.string.saved_high_score_key), "bright");
     }
 
-    public void saveArrayFolders(Activity activity ,ArrayList<String> list, String key) {
-        sharedPreferences = activity.getSharedPreferences(key ,Context.MODE_PRIVATE);
-        editor = sharedPreferences.edit();
-        Gson gson = new Gson();
-        String json = gson.toJson(list);
-        editor.remove(key);
-        editor.putString(key, json);
-        editor.apply();
-    }
-
-    public ArrayList<String> getArrayFolders(Activity activity ,String key) {
-        sharedPreferences = activity.getSharedPreferences(key ,Context.MODE_PRIVATE);
-        Gson gson = new Gson();
-        String json = sharedPreferences.getString(key, null);
-        System.out.println(json+"+++++++++++++++++++++++++++++++++++++++++++++++");
-        Type type = new TypeToken<ArrayList<String>>() {}.getType();
-        return gson.fromJson(json, type);
-    }
 }

app/src/main/res/drawable/bg_row_simple.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+
+    <solid android:color="?colorOnPrimary"/>
+
+    <corners android:radius="20dp"/>
+
+</shape>
\ No newline at end of file

app/src/main/res/layout/custom_folder_item.xml

@@ -3,9 +3,10 @@
     android:layout_width="match_parent"
     android:layout_height="80dp"
     android:orientation="horizontal"
-    android:background="?colorOnPrimary"
+    android:background="@drawable/bg_row_simple"
     android:layout_marginLeft="5dp"
     android:layout_margin="5dp"
+
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
         <ImageView
@@ -23,5 +24,6 @@
             android:layout_weight="4"
             android:text="@string/txt"
             android:textSize="20dp"
-            android:gravity="center_vertical"/>
+            android:gravity="center_vertical"
+            android:layout_marginRight="20dp"/>
     </LinearLayout>