I want to keep the checkbox values even if the recycler view is intent to another activity. But I don't know how to do it.
After intenting, checkbox value is initialized.
This is my recycler view code.
I send the checkbox position to another activity in onBindViewHolder
package com.example.teamproject.adapters;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.preference.PreferenceManager;
import android.util.Log;
import android.util.SparseBooleanArray;
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.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.android.volley.Response;
import com.example.teamproject.HeaderViewHolder;
import com.example.teamproject.BasicActivity;
import com.example.teamproject.MyPostActivity;
import com.example.teamproject.MyPostViewActivity;
import com.example.teamproject.MyProfileActivity;
import com.example.teamproject.PostViewActivity;
import com.example.teamproject.R;
import com.example.teamproject.models.Post;
import com.example.teamproject.myPostResult;
import java.util.ArrayList;
import java.util.logging.Handler;
public class MyPostAdapter extends RecyclerView.Adapter < MyPostAdapter.CustomViewHolder > {
private CompoundButton.OnCheckedChangeListener onCheckedChangeListener;
private SparseBooleanArray mSelectedItems = new SparseBooleanArray(0); //Item의 클릭 상태를 저장할 array 객체
private ArrayList < myPostResult > arrayList;
public static ArrayList < myPostResult > myPostArr = new ArrayList < myPostResult > ();
private Context context;
private final int TYPE_HEADER = 0;
private final int TYPE_ITEM = 1;
private final int TYPE_FOOTER = 2;
private Button button;
private View.OnLongClickListener onLongClickListener;
private static final String TAG = "BAAM";
private String[] checkarray;
public static int position;
private boolean isMyValueChecked;
public CheckBox checkBox;
public SharedPreferences sharedPreferences;
public MyPostAdapter(ArrayList < myPostResult > arrayList, Context context) {
this.arrayList = arrayList;
this.context = context;
}
@NonNull
@Override
public CustomViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { //리스트뷰가 어댑터에 연결된다음에 최초로 뷰홀더만듬
context = parent.getContext();
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post, parent, false);
CustomViewHolder holder = new CustomViewHolder(view);
SharedPreferences sharedPreferences = view.getContext().getSharedPreferences("My preference", Context.MODE_PRIVATE);
isMyValueChecked = sharedPreferences.getBoolean("checkbox", false);
return holder;
}
@Override
public void onBindViewHolder(@NonNull CustomViewHolder holder, int position) {
//final Post post=arrayList.get(position);
final myPostResult objincome = arrayList.get(position);
holder.email.setText("작성자 : " + MyProfileActivity.UserNickname);
Log.d(TAG, "POSTADATER : " + MyProfileActivity.UserNickname);
holder.title.setText(arrayList.get(position).getBoard_title());
holder.contents.setText(arrayList.get(position).getBoard_content());
holder.checkBox.setText("Checkbox" + position);
// holder.checkBox.setOnCheckedChangeListener(null);
holder.checkBox.setChecked(objincome.isSelected());
holder.checkBox.setTag(position);
holder.checkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Integer pos = (Integer) holder.checkBox.getTag();
Toast.makeText(context, arrayList.get(pos).getBoard_title() + "clicked!", Toast.LENGTH_SHORT).show();
Log.d(TAG, "checkbox pos111 ;" + pos);
if (arrayList.get(pos).isSelected()) {
Log.d(TAG, "checkbox pos ;" + position);
Toast.makeText(context, "Hihi!", Toast.LENGTH_SHORT).show();
Log.d(TAG, "ssibal ;" + "뒤질래?");
arrayList.get(pos).setSelected(false);
} else {
Intent intent1 = new Intent(context, MyPostActivity.class);
intent1.putExtra("pos", pos);
context.startActivity(intent1);
sharedPreferences = v.getContext().getSharedPreferences("My preference", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("id", holder.checkBox.isChecked());
editor.commit();
arrayList.get(pos).setSelected(true);
Log.d(TAG, "checkbox pos ;" + position);
}
}
});
isMyValueChecked = sharedPreferences.getBoolean("id", false);
holder.checkBox.setChecked(isMyValueChecked);
myPostArr = arrayList;
}
@Override
public int getItemViewType(int position) {
if (position == 0)
return TYPE_HEADER;
else if (position == arrayList.size() + 1)
return TYPE_FOOTER;
else
return TYPE_ITEM;
}
@Override
public int getItemCount() {
return (arrayList != null ? arrayList.size() : 0);
}
public class CustomViewHolder extends RecyclerView.ViewHolder {
private TextView title;
private TextView contents;
private TextView email;
CheckBox checkBox;
Integer pos;
public CustomViewHolder(@NonNull View ItemView) {
super(ItemView);
this.email = ItemView.findViewById(R.id.item_post_email);
this.title = ItemView.findViewById(R.id.item_post_title);
this.contents = ItemView.findViewById(R.id.item_post_contents);
this.checkBox = ItemView.findViewById(R.id.checkBox);
//
itemView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final int position = getAdapterPosition(); //현재 클릭된 리사이클러뷰의 위치 파악
if (position != RecyclerView.NO_POSITION) {
Intent intent = new Intent(context, MyPostViewActivity.class);
intent.putExtra("pos", position);
Log.d(TAG, "POSTADATER : " + MyProfileActivity.UserNickname);
Log.d(TAG, "POSTADATER pos : " + position);
context.startActivity(intent);
}
}
});
}
}
}
