Верхняя и нижняя колода в приложении бронирования автобусов не сохраняет данные при смене колоды

Question

Я работаю над приложением бронирования автобусов.Я создал макет для спящего автобуса.Он создан правильно.У меня есть верхняя и нижняя палуба в автобусе.Поэтому, когда я открываю макет, по умолчанию открывается нижняя колода.И если выбрать несколько мест и перейти на верхнюю палубу, а затем снова перейти на нижнюю палубу, то это создаст новый адаптер, и я не вижу выбранные места.

SearSelectionSleeperActivity

public class SeatSelectionSleeper extends AppCompatActivity implements AdapterView.OnItemClickListener{


    RecyclerView recyclerView;
    RecyclerView recyclerViewupper;
    SeatSelectionSleeper.SeatAdapter seatAdapter;
    List<SeatSelectionSleeper.SeatDetails> seatDetailsList;
    RecyclerView.LayoutManager layoutManager;
    RecyclerView.LayoutManager layoutManagerUpper;
    List seatNo;
    TextView txtSeatNo;
    TextView fare;
    public Bitmap seatIcon;
    public Bitmap seatSelect;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_seat_selection_sleeper);


        RadioGroup radioGroup = (RadioGroup) findViewById(R.id.busDeckSelectionButtons);

        final RelativeLayout driver = (RelativeLayout) findViewById(R.id.driver);

        seatIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.sleeping_available);
        seatSelect = BitmapFactory.decodeResource(this.getResources(), R.drawable.sleeper_select);

        recyclerView = (RecyclerView) findViewById(R.id.recycler);
        recyclerViewupper = (RecyclerView) findViewById(R.id.recyclerupper);
        layoutManager = new GridLayoutManager(this, 4);
        layoutManagerUpper = new GridLayoutManager(this, 4);
        recyclerView.setLayoutManager(layoutManager);
        seatAdapter = new SeatSelectionSleeper.SeatAdapter(SeatSelectionSleeper.this, loadBustListSeats());
        recyclerView.setAdapter(seatAdapter);

        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch (checkedId){
                    case R.id.lowerDeck:
                        recyclerView.setLayoutManager(layoutManager);
                        seatAdapter = new SeatSelectionSleeper.SeatAdapter(SeatSelectionSleeper.this, loadBustListSeats());
                        recyclerView.setAdapter(seatAdapter);
                        driver.setVisibility(View.VISIBLE);
                        recyclerView.setVisibility(View.VISIBLE);
                        recyclerViewupper.setVisibility(View.GONE);
                        break;
                    case R.id.upperDeck:
                        recyclerViewupper.setLayoutManager(layoutManagerUpper);
                        seatAdapter = new SeatSelectionSleeper.SeatAdapter(SeatSelectionSleeper.this, loadBustListSeatsUpper());
                        recyclerViewupper.setAdapter(seatAdapter);
                        driver.setVisibility(View.GONE);
                        recyclerView.setVisibility(View.GONE);
                        recyclerViewupper.setVisibility(View.VISIBLE);
                        break;
                }
            }
        });
    }

    public class SeatDetails {
        String name;
        boolean isBlank;
        boolean isSelected;

        public SeatDetails(String name, boolean isBlank, boolean isSelected) {
            this.name = name;
            this.isBlank = isBlank;
            this.isSelected = isSelected;
        }

        public String getName() {
            return name;
        }

        public void setSelected(boolean selected) {
            isSelected = selected;
        }

    }

    public List<SeatSelectionSleeper.SeatDetails> loadBustListSeats() {

        seatDetailsList = new ArrayList<SeatSelectionSleeper.SeatDetails>();
        int seatSerialNumber = 1;
        for (int i = 0; i < 24; i++) {
            if (isBlankSeat(i)) {
                seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("", true, false));
            } else {
                if (i == 0) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A5", false, false));
                }   else if (i == 2) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A1",false, false));
                }  else if (i == 3) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A2",false, false));
                } else if (i == 4) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B5",false, false));
                } else if (i == 6) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B1",false, false));
                }  else if (i == 7) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B2",false, false));
                } else if (i == 8) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C5",false, false));
                } else if (i == 10) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C1",false, false));
                } else if (i == 11) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C2",false, false));
                } else if (i == 12) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D5",false, false));
                } else if (i == 14) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D1",false, false));
                } else if (i == 15) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D2",false, false));
                } else if (i == 16) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E5",false, false));
                }  else if (i == 18) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E1",false, false));
                }  else if (i == 19) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E2",false, false));
                } else if (i == 20) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F5",false, false));
                }else if (i == 22) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F1",false, false));
                }else if (i == 23) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F2",false, false));
                }
            }
        }
        return seatDetailsList;
    }

    public List<SeatSelectionSleeper.SeatDetails> loadBustListSeatsUpper() {

        seatDetailsList = new ArrayList<SeatSelectionSleeper.SeatDetails>();
        int seatSerialNumber = 1;
        for (int i = 0; i < 24; i++) {
            if (isBlankSeat(i)) {
                seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("", true, false));
            } else {
                if (i == 0) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A6", false, false));
                }   else if (i == 2) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A3",false, false));
                }  else if (i == 3) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("A4",false, false));
                } else if (i == 4) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B6",false, false));
                } else if (i == 6) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B3",false, false));
                }  else if (i == 7) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("B4",false, false));
                } else if (i == 8) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C6",false, false));
                } else if (i == 10) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C3",false, false));
                } else if (i == 11) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("C4",false, false));
                } else if (i == 12) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D6",false, false));
                } else if (i == 14) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D3",false, false));
                } else if (i == 15) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("D4",false, false));
                } else if (i == 16) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E6",false, false));
                }  else if (i == 18) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E3",false, false));
                }  else if (i == 19) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("E4",false, false));
                } else if (i == 20) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F6",false, false));
                }else if (i == 22) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F3",false, false));
                }else if (i == 23) {
                    seatDetailsList.add(new SeatSelectionSleeper.SeatDetails("F4",false, false));
                }
            }
        }
        return seatDetailsList;
    }


    public boolean isBlankSeat(int i) {
        if ((24 - (i - 1)) < 4)
            return false;
        else
            return i % 4 == 1 ;
    }
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {


    }



    public void seatSelected(int pos)
    {
        seatDetailsList.get(pos).setSelected(true);
        charge = charge + amt;
        fare.setText(String.valueOf(charge));
        seatNo.add(seatDetailsList.get(pos).getName());
        txtSeatNo.setText(seatNo.toString().replace("[","").replace("]",""));
        seatAdapter.notifyDataSetChanged();
    }

    public void seatDeselected(int pos)
    {
        seatDetailsList.get(pos).setSelected(false);
        charge = charge - amt;
        fare.setText(String.valueOf(charge));
        seatNo.remove(seatDetailsList.get(pos).getName());
        txtSeatNo.setText(seatNo.toString().replace("[","").replace("]",""));
        seatAdapter.notifyDataSetChanged();
    }


    public class SeatAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{


        class ViewHolderOriginal extends RecyclerView.ViewHolder{

            ImageView imageView;
            ViewHolderOriginal(View itemView) {
                super(itemView);
                imageView= (ImageView) itemView.findViewById(R.id.item_image);

            }
        }


        class ViewHolderBlank extends RecyclerView.ViewHolder{
            ViewHolderBlank(View itemView) {
                super(itemView);

            }
        }



        public Context cntx;
        public SeatAdapter(Context context, List<SeatSelectionSleeper.SeatDetails> list){
            this.cntx = context;
            seatDetailsList = list;
        }

        // 0= Original view 1= Blank View
        @Override
        public int getItemViewType(int position) {
            if((getItemCount() -(position-1))<4)
                return 0;
            else
                return position % 4 == 1 ? 1 : 0;
        }

        @Override
        public int getItemCount() {
            return seatDetailsList.size();
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

            LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            if (viewType == 1)
                return new SeatSelectionSleeper.SeatAdapter.ViewHolderBlank(inflater.inflate(R.layout.item_blank, parent, false));
            else
                return new SeatSelectionSleeper.SeatAdapter.ViewHolderOriginal(inflater.inflate(R.layout.seatrow_grid_sleep, parent, false));
        }


        @Override
        public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
            if (holder instanceof SeatSelection.SeatAdapter.ViewHolderBlank) {

            } else if
                    (holder instanceof SeatSelectionSleeper.SeatAdapter.ViewHolderOriginal) {
                SeatSelectionSleeper.SeatDetails seatDetails = seatDetailsList.get(position);

                if (seatDetails.isSelected){
                    ((SeatSelectionSleeper.SeatAdapter.ViewHolderOriginal) holder).imageView.setImageBitmap(seatSelect);
                }else {
                    ((SeatSelectionSleeper.SeatAdapter.ViewHolderOriginal) holder).imageView.setImageBitmap(seatIcon);
                }

                holder.itemView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        SeatSelectionSleeper.SeatDetails seatDetails = seatDetailsList.get(position);

                        if (seatDetails.isSelected){
                            seatDeselected(position);
                        }
                        else
                        {
                            seatSelected(position);
                        }
                    }
                });
            }
        }

    }
}

Answer 1

Каждый раз, когда вы меняете адаптер, вы создаете новый SeatSelectionSleeper.SeatDetails список объектов из loadBustListSeats() и loadBustListSeatsUpper(), поэтому ваш сравнительный объект seatDetails.isSelected будет иметь значение false при замене адаптера.

Одно простое решение, вы можете попытаться использовать свой объект seatNo list для достижения этого,

Вместо использования приведенного ниже кода в вашем адаптере,

if (seatDetails.isSelected)

Используйте это,

if (seatNo.contains(seatDetails.getName()))

Потому что вы добавляете и удаляете, когда место выбрано или удалено имя места в этом списке.