java - Android - リストビューからスピナーにアイテムを追加する

Question

リストビューからスピナーに項目を追加しようとしています.私の最初のアクティビティにはリストビューが含まれています. アクティビティListViewでSQLiteデータベースを使用して新しい行エントリが挿入されるたびにボタンを使用しており、すべての行がリストビューに適切に追加されています。もう1つは、2番目のアクティビティにスピナーがあります。

そして、各 list_view アイテムを 2 番目のアクティビティのスピナーに追加したいと考えています。

これは私の製品リストアダプタクラスです。

 public class Product_List_Adapter extends BaseAdapter
    {
        @SuppressWarnings("unused")
        private Context mContext;
        private ArrayList<String> Productid_ArrayList;
        private ArrayList<String> ProductName_ArrayList;
        private ArrayList<String> ProductDescription_ArrayList;


        public Product_List_Adapter(Context mContext,
                ArrayList<String> productid_ArrayList,
                ArrayList<String> productName_ArrayList,
                ArrayList<String> productDescription_ArrayList)
        {
            super();
            this.mContext = mContext;
            Productid_ArrayList = productid_ArrayList;
            ProductName_ArrayList = productName_ArrayList;
            ProductDescription_ArrayList = productDescription_ArrayList;
        }




        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return Productid_ArrayList.size();
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public View getView(int pos, View child, ViewGroup parent) {
            // TODO Auto-generated method stub
            Holder mHolder;
            LayoutInflater layoutInflater;

            if(child == null)
            {
                layoutInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                child = layoutInflater .inflate(R.layout.define_products_listrow, null);
                mHolder = new Holder();
                mHolder.txt_product_id = (TextView)child.findViewById(R.id.txt_ProductId);
                mHolder.txt_product_name = (TextView)child.findViewById(R.id.txt_ProductName);
                mHolder.txt_product_description = (TextView)child.findViewById(R.id.txt_ProductDescr);

                child.setTag(mHolder);
            }
            else
            {
                mHolder = (Holder) child.getTag();
            }

            mHolder.txt_product_id.setText(Productid_ArrayList.get(pos));
            mHolder.txt_product_name.setText(ProductName_ArrayList.get(pos));
            mHolder.txt_product_description.setText(ProductDescription_ArrayList.get(pos));

            return child;
        }

        public class Holder {
            TextView txt_product_id;
            TextView txt_product_name;
            TextView txt_product_description;
        }
    }





The ProductDefine Sctivity which is contain Listview



public class DefineProducts_Activity6 extends Activity {

    String log;
    List<String> list_Dataset;
    String[] str_Splitup1;
    String[] str_Splitup2;
    String[] str_Splitup3;

    Product_List_Adapter disadpt;
    //public ArrayAdapter<String> adapter;

    private com.db_mgmt.DbHelper mHelper;
    private SQLiteDatabase dataBase;

    private static ArrayList<String> products_Id_ArrayList = new ArrayList<String>();
    private static ArrayList<String> products_Name_ArrayList = new ArrayList<String>();
    private static ArrayList<String> products_Details_ArrayList = new ArrayList<String>();

    private ListView products_List;
    private AlertDialog.Builder build;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.define_products_listview);

        products_List = (ListView) findViewById(R.id.products_List);
        mHelper = new DbHelper(this);


        //add new record
        findViewById(R.id.btnAdd_DefineProduct).setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                Intent i = new Intent(getApplicationContext(),
                        Add_Define_Product.class);

                i.putExtra("update", false);
                startActivity(i);

            }
        });


        //click to update data
        products_List.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {

                Intent i = new Intent(getApplicationContext(),
                        Add_Define_Product.class);
                i.putExtra("productsName", products_Name_ArrayList.get(arg2));
                i.putExtra("productsDetails", products_Details_ArrayList.get(arg2));
                i.putExtra("productsID", products_Id_ArrayList.get(arg2));
                i.putExtra("update", true);
                startActivity(i);

            }
        });


        //long click to delete data
        products_List.setOnItemLongClickListener(new OnItemLongClickListener() {

            public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                    final int arg2, long arg3) {

                build = new AlertDialog.Builder(DefineProducts_Activity6.this);
                build.setTitle("Delete " + products_Name_ArrayList.get(arg2) + " "
                        + products_Details_ArrayList.get(arg2));
                build.setMessage("Do you want to delete ?");
                build.setPositiveButton("Yes",
                        new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog,
                                    int which) {

                                Toast.makeText(
                                        getApplicationContext(),
                                        products_Name_ArrayList.get(arg2) + " "
                                                + products_Details_ArrayList.get(arg2)
                                                + " is deleted.", Toast.LENGTH_LONG).show();

                                dataBase.delete(
                                        DbHelper.TABLE_DEFINE_PRODUCT_NAME,
                                        DbHelper.KEY_ID + "="
                                                + products_Id_ArrayList.get(arg2), null);
                                displayData();
                                dialog.cancel();
                            }
                        });

                build.setNegativeButton("No",
                        new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog,
                                    int which) {
                                dialog.cancel();
                            }
                        });
                AlertDialog alert = build.create();
                alert.show();

                return true;
            }
        });
    }



    @Override
    protected void onResume() {
        displayData();
        super.onResume();
    }

    /**
     * displays data from SQLite
     */
    private void displayData() {
        dataBase = mHelper.getWritableDatabase();
        Cursor mCursor = dataBase.rawQuery("SELECT * FROM "
                + DbHelper.TABLE_DEFINE_PRODUCT_NAME, null);

        products_Id_ArrayList.clear();
        products_Name_ArrayList.clear();
        products_Details_ArrayList.clear();


        if (mCursor.moveToFirst()) 
        {
            do 
            {
                products_Id_ArrayList.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_ID)));
                products_Name_ArrayList.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_PRODUCTS_NAME)));
                products_Details_ArrayList.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_PRODUCTS_DETAILS)));

            } while (mCursor.moveToNext());
        }


        SharedPreferences spdata =
            PreferenceManager.getDefaultSharedPreferences(this);
        String strDataSet1 = spdata.getString("LISTS_ID",",");
        String strDataSet2 = spdata.getString("LISTS_NAME", "");
        String strDataSet3 = spdata.getString("LISTS_Detail", "");


        Log.e(log,strDataSet1);
        Log.e(log,strDataSet2);
        Log.e(log,strDataSet3);

        list_Dataset = Arrays.asList(strDataSet1.split(","));
        list_Dataset = Arrays.asList(strDataSet3.split(","));
        list_Dataset = Arrays.asList(strDataSet2.split(","));

        str_Splitup1 = strDataSet1.split(",");
        str_Splitup2 = strDataSet2.split(",");
        str_Splitup3 = strDataSet3.split(",");


        List<String> items1 = Arrays.asList(strDataSet1.split(","));
        List<String> items2 = Arrays.asList(strDataSet2.split(","));
        List<String> items3 = Arrays.asList(strDataSet3.split(","));

        ArrayList<String> itemsarraylist = new ArrayList<String>();

        for (int j = 0; j < items2.size(); j++)
        {
            itemsarraylist.add(j, items2.get(j));

        }


disadpt = new Product_List_Adapter(DefineProducts_Activity6.this,products_Id_ArrayList, products_Name_ArrayList, products_Details_ArrayList);
        products_List.setAdapter(disadpt);
        disadpt.notifyDataSetChanged();
        mCursor.close();
    }



}

score 0 · Accepted Answer

これはarrayList

ArrayList<HashMap<String, String>> rssItemList = new ArrayList<HashMap<String, String>>();

これはasyncTaskクラスです

class loadStoreItems extends AsyncTask<String, Void, ArrayList<HashMap<String, String>>> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        rssItemList.clear();
    }

    @Override
    protected ArrayList<HashMap<String, String>> doInBackground(
            String... args) {
        // updating UI from Background Thread
        FeedDBHandler rssDb = new FeedDBHandler(getApplicationContext());

        // listing all RSSItems from SQLite
        List<RSSItem> rssList = rssDb.getAllItems();

        // loop through each RSSItem
        for (int i = 0; i < rssList.size(); i++) {

            RSSItem s = rssList.get(i);

            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();

            // adding each child node to HashMap key => value

            map.put(TAG_TITLE, s.getTitle());
            map.put(TAG_LINK, s.getLink());
            map.put(TAG_CATEGORY, s.getCategory());
            map.put(TAG_DESRIPTION, s.getDescription());
            map.put(TAG_PUB_DATE, s.getPubdate());
            // adding HashList to ArrayList
            rssItemList.add(map);

        }
        return rssItemList;
    }

これは役に立ちます。

このコードを実行できます。

score 0 · Accepted Answer

ListView にコンテンツを追加し、ListItem 値ごとに onItemClickListener を使用します。以下のコードで目標を達成できます。

文字列配列の代わりにグローバル変数にこれを使用します

グローバルクラス

    class GlobalClass extends Application {
    public static List<String> myVal = new ArrayList<String>() ;
    }

ホームアクティビティ

OnItemClickListener

    listView.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {

         String clickedvalue =(String) parent.getItemAtPosition(position); 
         myVal.add(clickedvalue);

         }
    }); 
}

これで、クリックされたすべての値が ListArray に含まれます。

その後、..経由で送信できます

    intent.putParcelableArrayListExtra( "addresses", addyExtras );

お役に立てば幸いです。

java - Android - リストビューからスピナーにアイテムを追加する

2 に答える 2

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