Data Loaded From SQLitE Databse Is Not Saving In The Model Class ArrayList Android

I am retrieving data from my SQLite database. I checked that my data is retrieving successfully but this is not saving in the ArrayList of my Model Class by logging values. and the

Solution 1:

Try with the following code.

 class Adapter extends RecyclerView.Adatper<RecyclerViewAdapter.RecyclerViewHolder>(){
 //add new method in adapter class
 Public void dataChange(ArrayList<Model> itemList){
  //update your previous list with the new list
  previousList = itemList;
  notifyDataSetChanged()
  }

}


public void ReadSqliteData(Context context){
ArrayList<Model> list = new ArrayList<>();
Adpter adpter = new Adpter(list,context);
SQLiteDatabase database = getWritableDatabase();
Cursor cursor = database.rawQuery("Select name, image from orders",null);
while (cursor.moveToNext()){
Model model = new Model();
model.setImage(cursor.getString(0));            
model.setName(cursor.getString(1));    
list.add(model);
}
//call adapter dataChange() method from here
adpter.dataChange(list);
cursor.close();
database.close();
}

Solution 2:

From the adapter class, create public function to set the new items by

// Adapter Class
public void setItems(List<Model> newItems) {
    this.list = newItems;      <-- Here you need to replace with new items
    notifyDataSetChanged();
}

public int getItemsCount() {
    return list.size();
}

From your activity adapter.setItems(newItems);

Solution 3:

this is happening because I am using different Variables for ArrayListand Adpter. simply passing ArrayListand Adpter as a parameter to ReadSqliteData() Method which is used to set LayoutManager and Adpter to the RecyclerView the problem will be solved.,

ReadSqliteData(Context context, ArrayList list,Adpter adpter){ //code here }

public void ReadSqliteData(Context context, ArrayList<Model> list,Adpter adpter){
SQLiteDatabase database = getWritableDatabase();
Cursor cursor = database.rawQuery("Select name, image from orders",null);
Model model = new Model();
while (cursor.moveToNext()){
model.setImage(cursor.getString(0));            
model.setName(cursor.getString(1));    
list.add(model);
}
adpter.notifyDataSetChanged();
cursor.close();
database.close();
}

Note:- Only the `list and adapter that I am passing as parameters are used to set layout manager and Adapter to recycler view in my Activity class