recyclerview에 gson사용해서 sharedpreference로 저장할때

Question

구글링도많이해봤는데 도저히 모르겠네요save load위치를 잘 모르겠습니다. 지금 위치대로하니 이미 저장되있는것은 편집,삭제가 가능하고 저장이됩니다.그런데 새롭게 생성이 안되네요.. save, load위치가 잘못된건가요??메인package org.techtown.recyclerview_ms; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.DividerItemDecoration; import androidx.recyclerview.widget.GridLayoutManager; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.view.GestureDetector; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import org.json.JSONArray; import org.json.JSONException; import java.lang.reflect.Array; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.Dictionary; import java.util.HashSet; import java.util.Set; import javax.xml.transform.Result; public class MainActivity extends AppCompatActivity { private ArrayList mArrayList; private MsRecyclerAdapter mAdapter; private Data data; //private int count = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); RecyclerView recyclerView = (RecyclerView) findViewById(R.id.mainRecyclerView); recyclerView.setHasFixedSize(true); // 크기일정하게맞추는거양 GridLayoutManager layoutManager = new GridLayoutManager(this, 2); recyclerView.setLayoutManager(layoutManager); mArrayList = new ArrayList<>(); //mAdapter = new MsRecyclerAdapter(mArrayList); mAdapter = new MsRecyclerAdapter(mArrayList, this); recyclerView.setAdapter(mAdapter); DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(), layoutManager.getOrientation()); recyclerView.addItemDecoration(dividerItemDecoration); // 구분선 recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getApplicationContext(), recyclerView, new ClickListener() { @Override public void onClick(View view, int position) { data = mArrayList.get(position); Intent intent = new Intent(getBaseContext(), ResultActivity.class); intent.putExtra("title", data.getTitle()); intent.putExtra("subtitle", data.getSubtitle()); intent.putExtra("contents", data.getContents()); startActivity(intent); } @Override public void onLongClick(View view, int position) { } })); Button buttonInsert = (Button) findViewById(R.id.button); buttonInsert.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // count++; // Data data = new Data(count + "", count + "일차"); // // //mArrayList.add(0, data); //RecyclerView의 첫 줄에 삽입 // mArrayList.add(data); // RecyclerView의 마지막 줄에 삽입 // // mAdapter.notifyDataSetChanged(); AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); View view = LayoutInflater.from(MainActivity.this) .inflate(R.layout.edit_box, null, false); builder.setView(view); final Button ButtonModify = (Button) view.findViewById(R.id.box_modify); final EditText editTextTitle; editTextTitle = (EditText) view.findViewById(R.id.box_title); final EditText editTextSubTitle = (EditText) view.findViewById(R.id.box_subtitle); final EditText editTextContents = (EditText) view.findViewById(R.id.box_contents); ButtonModify.setText("삽입"); final AlertDialog dialog = builder.create(); ButtonModify.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { String strTitle = editTextTitle.getText().toString(); String strSubTitle = editTextSubTitle.getText().toString(); String strContents = editTextContents.getText().toString(); Data data = new Data(strTitle, strSubTitle, strContents); // mArrayList.add(0, data); //첫 줄에 삽입 mArrayList.add(data); //마지막 줄에 삽입 mAdapter.notifyDataSetChanged(); //변경된 데이터를 화면에 반영 dialog.dismiss(); } }); dialog.show(); } }); } public interface ClickListener { void onClick(View view, int position); void onLongClick(View view, int position); } public static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener { private GestureDetector gestureDetector; private MainActivity.ClickListener clickListener; public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final MainActivity.ClickListener clickListener) { this.clickListener = clickListener; gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { @Override public boolean onSingleTapUp(MotionEvent e) { return true; } @Override public void onLongPress(MotionEvent e) { View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); if (child != null && clickListener != null) { clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child)); } } }); } @Override public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { View child = rv.findChildViewUnder(e.getX(), e.getY()); if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) { clickListener.onClick(child, rv.getChildAdapterPosition(child)); } return false; } @Override public void onTouchEvent(RecyclerView rv, MotionEvent e) { } @Override public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { } } private void saveIncomeCategory() { SharedPreferences sharedPreferences = getSharedPreferences("sharedPrefIncomeCategoryList", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); Gson gson = new Gson(); String json = gson.toJson(mArrayList); editor.putString("incomeCategoryList", json); editor.apply(); } private void loadData() { SharedPreferences sharedPreferences = getSharedPreferences("sharedPrefIncomeCategoryList", Context.MODE_PRIVATE); Gson gson = new Gson(); String json = sharedPreferences.getString("incomeCategoryList", null); Type type = new TypeToken>() { }.getType(); mArrayList = gson.fromJson(json, type); if (mArrayList == null) { mArrayList = new ArrayList<>(); } } private void loadKeranjang() { SharedPreferences sharedPreferences= getSharedPreferences("PREF_NAME", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); Gson gson = new Gson(); String json = sharedPreferences.getString("mykeranjang",null); Type type = new TypeToken>(){}.getType(); mArrayList = gson.fromJson(json,type); if (mArrayList==null){ mArrayList = new ArrayList<>(); } } private void saveKeranjang() { SharedPreferences sharedPreferences= getSharedPreferences("PREF_NAME", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); Gson gson = new Gson(); String json = gson.toJson(mArrayList); editor.putString("mykeranjang",json); editor.apply(); } }어뎁터입니다package org.techtown.recyclerview_ms; import android.app.AlertDialog; import android.content.Context; import android.content.SharedPreferences; import android.view.ContextMenu; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.recyclerview.widget.RecyclerView; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.HashSet; import java.util.Set; public class MsRecyclerAdapter extends RecyclerView.Adapter { private ArrayList dList; private Context mContext; public MsRecyclerAdapter(ArrayList list, Context context) { dList = list; mContext = context; loadData(); } // 1. 컨텍스트 메뉴를 사용하라면 RecyclerView.ViewHolder를 상속받은 클래스에서 // OnCreateContextMenuListener 리스너를 구현해야 합니다. public class MsViewHolder extends RecyclerView.ViewHolder implements View.OnCreateContextMenuListener { protected TextView title; protected TextView subtitle; protected TextView contents; public MsViewHolder(@NonNull View itemView) { super(itemView); this.title = itemView.findViewById(R.id.item_title); this.subtitle = itemView.findViewById(R.id.item_subtitle); this.contents = itemView.findViewById(R.id.item_contents); itemView.setOnCreateContextMenuListener(this); //2. OnCreateContextMenuListener 리스너를 현재 클래스에서 구현한다고 설정해둡니다. } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { // 3. 컨텍스트 메뉴를 생성하고 메뉴 항목 선택시 호출되는 리스너를 등록해줍니다. ID 1001, 1002로 어떤 메뉴를 선택했는지 //리스너에서 구분하게 됩니다. MenuItem Edit = menu.add(Menu.NONE, 1001, 1, "편집"); MenuItem Delete = menu.add(Menu.NONE, 1002, 2, "삭제"); Edit.setOnMenuItemClickListener(onEditMenu); Delete.setOnMenuItemClickListener(onEditMenu); } // 4. 컨텍스트 메뉴에서 항목 클릭시 동작을 설정합니다. private final MenuItem.OnMenuItemClickListener onEditMenu = new MenuItem.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) { case 1001: // 5. 편집 항목을 선택시 AlertDialog.Builder builder = new AlertDialog.Builder(mContext); // alertdialog는 창띄우는거!! // 다이얼로그를 보여주기 위해 edit_box.xml 파일을 사용합니다. View view = LayoutInflater.from(mContext) .inflate(R.layout.edit_box, null, false); builder.setView(view); final Button ButtonModify = (Button) view.findViewById(R.id.box_modify); final EditText editTextTitle = (EditText) view.findViewById(R.id.box_title); final EditText editTextSubTitle = (EditText) view.findViewById(R.id.box_subtitle); final EditText editTextContents = (EditText) view.findViewById(R.id.box_contents); // 6. 해당 줄에 입력되어 있던 데이터를 불러와서 다이얼로그에 보여줍니다. editTextTitle.setText(dList.get(getAdapterPosition()).getTitle()); editTextSubTitle.setText(dList.get(getAdapterPosition()).getSubtitle()); editTextSubTitle.setText(dList.get(getAdapterPosition()).getContents()); final AlertDialog dialog = builder.create(); ButtonModify.setOnClickListener(new View.OnClickListener() { // 7. 수정 버튼을 클릭하면 현재 UI에 입력되어 있는 내용으로 public void onClick(View v) { String strTitle = editTextTitle.getText().toString(); String strSubTitle = editTextSubTitle.getText().toString(); String strContents = editTextContents.getText().toString(); // editor.putString("text1", strTitle); // key, value를 이용하여 저장하는 형태 // editor.putString("text2", strSubTitle); // key, value를 이용하여 저장하는 형태 // editor.putString("text3", strContents); // key, value를 이용하여 저장하는 형태 // editor.apply(); Data data = new Data(strTitle, strSubTitle, strContents); // 8. ListArray에 있는 데이터를 변경하고 dList.set(getAdapterPosition(), data); // 9. 어댑터에서 RecyclerView에 반영하도록 합니다. notifyItemChanged(getAdapterPosition()); dialog.dismiss(); } }); dialog.show(); break; case 1002: dList.remove(getAdapterPosition()); notifyItemRemoved(getAdapterPosition()); notifyItemRangeChanged(getAdapterPosition(), dList.size()); break; } saveIncomeCategory(); return true; } }; } @NonNull @Override public MsRecyclerAdapter.MsViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()) .inflate(R.layout.item, parent, false); MsViewHolder ms = new MsViewHolder(view); return ms; } @Override public void onBindViewHolder(@NonNull MsRecyclerAdapter.MsViewHolder holder, int position) { holder.title.setText(dList.get(position).getTitle()); holder.subtitle.setText(dList.get(position).getSubtitle()); holder.contents.setText(dList.get(position).getContents()); } @Override public int getItemCount() { return dList.size(); } private void saveIncomeCategory() { SharedPreferences sharedPreferences = mContext.getSharedPreferences("sharedPrefIncomeCategoryList", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); Gson gson = new Gson(); String json = gson.toJson(dList); editor.putString("incomeCategoryList", json); editor.apply(); } private void loadData() { SharedPreferences sharedPreferences = mContext.getSharedPreferences("sharedPrefIncomeCategoryList", Context.MODE_PRIVATE); Gson gson = new Gson(); String json = sharedPreferences.getString("incomeCategoryList", null); Type type = new TypeToken>() { }.getType(); dList = gson.fromJson(json, type); if (dList == null) { dList = new ArrayList<>(); } } }

recyclerview에 gson사용해서 sharedpreference로 저장할때

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#gson 목록