java - 基于矩阵位置[行][列]的Gridview项集

Question

我需要在 Android 应用程序中设计公交车座位 View ，并且我有矩阵格式的座位位置。例如

a1.row=4;
a1.column=5;

我只需要根据它们的矩阵位置在gridview中设置这些座位。矩阵中的其他空格将为空白或空。显示这些座位 View 后，如果我选择特定座位，则该座位相关对象将被添加到对象列表中，如果我取消选择，它将从对象列表中删除。谁能帮我找到解决方案？是否可以使用 gridview 来实现此目的，但我将使用其矩阵位置在 GridView 中设置项目

Answer 1

试试这个代码

Activity 类

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;

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

        recyclerView = findViewById(R.id.rv_list);
        showSeatList();
    }

    private void showSeatList()
    {

        List<SeatModel> seatModels = new ArrayList<>();

        seatModels.add(new SeatModel("1","A",false));
        seatModels.add(new SeatModel("2","B",false));
        seatModels.add(new SeatModel("3","C",false));
        seatModels.add(new SeatModel("4","D",false));
        seatModels.add(new SeatModel("5","E",false));
        seatModels.add(new SeatModel("6","F",false));
        seatModels.add(new SeatModel("7","G",false));
        seatModels.add(new SeatModel("8","H",false));
        seatModels.add(new SeatModel("9","I",false));
        seatModels.add(new SeatModel("10","J",false));

        SeatSelectionAdapter adapter = new SeatSelectionAdapter(this,seatModels);
        recyclerView.setLayoutManager(new GridLayoutManager(this, 5));
        recyclerView.setAdapter(adapter);

    }

}

适配器类

public class SeatSelectionAdapter  extends RecyclerView.Adapter<SeatSelectionAdapter.ViewHolder>
{
    private List<SeatModel> seatModelList;
    private LayoutInflater inflater;
    private Context context;

    public SeatSelectionAdapter(Context context, List<SeatModel>models)
    {
        this.seatModelList = models;
        inflater = LayoutInflater.from(context);
        this.context = context;
    }

    @NonNull
    @Override
    public SeatSelectionAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = inflater.inflate(R.layout.model_seat,parent,false);
        return new SeatSelectionAdapter.ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull SeatSelectionAdapter.ViewHolder holder, int position) {
        SeatModel model = seatModelList.get(position);
        holder.setData(model);
    }

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

    class ViewHolder extends RecyclerView.ViewHolder
    {
        private CardView cardView;
        private LinearLayout lnLayout;
        private TextView tvSeat;

        private ViewHolder(View view) {
            super(view);
            tvSeat = view.findViewById(R.id.tv_seat);
            cardView = view.findViewById(R.id.cv_card);
            lnLayout = view.findViewById(R.id.ln_layout);
        }

        @SuppressLint({"SetTextI18n", "ClickableViewAccessibility"})
        private void setData(final SeatModel model)
        {
            tvSeat.setText(model.getSeat());
            if(model.isSelect())
                lnLayout.setBackgroundColor(context.getResources().getColor(R.color.colorAccent));
            else lnLayout.setBackgroundColor(context.getResources().getColor(R.color.white));

            cardView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(model.isSelect())
                    {
                        model.setSelect(false);
                        Toast.makeText(context,"Seat not selected",Toast.LENGTH_LONG).show();
                    }
                    else{
                        model.setSelect(true);
                        Toast.makeText(context,"Seat selected",Toast.LENGTH_LONG).show();
                    }



                    notifyDataSetChanged();
                }
            });

        }
    }
}

模型类

public class SeatModel
{
    private String id,seat;
    private boolean isSelect;

    public SeatModel(String id, String seat, boolean isSelect) {
        this.id = id;
        this.seat = seat;
        this.isSelect = isSelect;
    }

    public boolean isSelect() {
        return isSelect;
    }

    public void setSelect(boolean select) {
        isSelect = select;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getSeat() {
        return seat;
    }

    public void setSeat(String seat) {
        this.seat = seat;
    }
}