在 listView 中保存动态添加的数据

Question

我设计了一个 ListView，我在其中动态添加了数据，但是当我刷新或重新启动我的应用程序时，数组大小变成 zero/no 我添加的 listView 中的数据 previously.How 我可以持有我的 listView 中的数据并将数据添加到 same.if 然后我可以保存它，可以轻松地向其中添加数据。

Activity 2:(我打算从 activity 1 到这里的数组）

    ListView listView=(ListView) findViewById(R.id.AcceptedList);

    ArrayList<PendingPickupBEAN>  listObject = (ArrayList<PendingPickupBEAN>) getIntent().getSerializableExtra("referArray");

    Log.d(TAG," size of intent list " +listObject.size());


    CustomListViewAdapterGet customListViewAdapterGet = new CustomListViewAdapterGet(this,R.layout.list_item_accepted,listObject);
    listView.setAdapter(customListViewAdapterGet);

}

class CustomListViewAdapterGet 扩展 ArrayAdapter {

    Context context;
    LayoutInflater inflater;
    List<PendingPickupBEAN> obj ;



    public CustomListViewAdapterGet(Context context, int resourceId,
                                    ArrayList<PendingPickupBEAN> obj) {

        super(context, resourceId,obj);
        this.context = context;
        this.obj = obj;


        inflater = LayoutInflater.from(context);

    }



    private class ViewHolder {
        TextView txt_pickupID;
        TextView txt_address;
        Button btn_More;



    }

    public View getView(final int position, View view, final ViewGroup parent) {




    final    ArrayAdapter<PendingPickupBEAN> adapter=new ArrayAdapter<PendingPickupBEAN>
                (Activity_Pickup.this,R.layout.list_item_accepted,R.id.Accepted_pickupID);

        final CustomListViewAdapterGet.ViewHolder holder;
        if (view == null) {
            holder = new CustomListViewAdapterGet.ViewHolder();
            view = inflater.inflate(R.layout.list_item_accepted, null);
            holder.txt_pickupID = (TextView) view.findViewById(R.id.Accepted_pickupID);
            holder.btn_More = (Button) view.findViewById(R.id.btn_More);

            view.setTag(holder);
        } else {
            holder = (CustomListViewAdapterGet.ViewHolder) view.getTag();
        }

        holder.txt_pickupID.setText(obj.get(position).getPickupID());


        holder.btn_More.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                holder.btn_More.setBackgroundResource(R.color.colorAccept);


            }
        });

        return view;

    }

}

Answer 1

您可以将数据存储在数据库中。

Answer 2

将您的数据存储在一些永久性存储器上

Store Data in DataBases

Use SharedPreffernce

在 listView 中保存动态添加的数据

Hold dynamically added data in listView

android

listview

arraylist

android-arrayadapter