主鍵select從清單中選擇

Question

我在應用程序中工作，它有多個清單，用戶可以從中選擇項目，項目是從SQLite生成的。
我已經使用了以下內容，但它只是給我選擇的一個字符串。

這是我Product.java

list = (ListView)findViewById(android.R.id.list); 
     list.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 


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

      try { 
       sampleDB = this.openOrCreateDatabase(SAMPLE_DB_NAME, MODE_PRIVATE, null); 

       sampleDB.execSQL("CREATE TABLE IF NOT EXISTS " + 
         SAMPLE_TABLE_NAMES + 
         " (_id INTEGER PRIMARY KEY AUTOINCREMENT, pro_name text);"); 
       sampleDB.execSQL("INSERT INTO " + 
         SAMPLE_TABLE_NAMES + 
         " Values ('1','Milk');"); 
       sampleDB.execSQL("INSERT INTO " + 
         SAMPLE_TABLE_NAMES + 
         " Values ('2','Sugar');"); 
       sampleDB.execSQL("INSERT INTO " + 
         SAMPLE_TABLE_NAMES + 
         " Values ('3','Oil');"); 
      } 
      finally{ 
       if (sampleDB != null) 
        sampleDB.execSQL("DELETE FROM " + SAMPLE_TABLE_NAMES); 
        sampleDB.close(); 
      } 
     setListAdapter(new ArrayAdapter<String>(this, 
       android.R.layout.simple_list_item_checked, new ArrayList())); 

     new AddStringTask().execute(); 
    } 

    class AddStringTask extends AsyncTask<Void, String, Void> { 
     @Override 
     protected Void doInBackground(Void... unused) { 
      for (String item : items) { 
       publishProgress(item); 
       SystemClock.sleep(100); 
      } 

      return (null); 
     } 

     @Override 
     protected void onProgressUpdate(String... item) { 
      ((ArrayAdapter) getListAdapter()).add(item[0]); 
     } 

     @Override 
     protected void onPostExecute(Void unused) { 
      setSelection(3); 
      Toast.makeText(Product.this, "Done!", Toast.LENGTH_SHORT).show(); 
     } 
    } 

    @Override 
    protected void onListItemClick(ListView l, View v, int position, long id) { 
     CheckedTextView check = (CheckedTextView) v; 
     check.setChecked(!check.isChecked()); 
     String selection = l.getItemAtPosition(position).toString(); 
     Toast.makeText(this, selection, Toast.LENGTH_SHORT).show(); 
     if(check.isChecked()) 
     { 
      Toast.makeText(Product.this, "Item are Checked!", Toast.LENGTH_SHORT).show(); 
     } 
     if(!check.isChecked()&&!check.isChecked()) 
     { 
      Toast.makeText(Product.this, "Item are not checked!", Toast.LENGTH_SHORT).show(); 
     } 
    } 


    public View getView(final int position, View convertView, ViewGroup parent) 
    { 
     cursor.moveToPosition(position); 
     LayoutInflater inf=getLayoutInflater(); 
     vi=inf.inflate(R.layout.total, null); 
     vi.setTag(cursor.getInt(0)); 
     return vi; 
    } 

這裏是Final.java

setContentView(R.layout.total); 
     txtEmps=(TextView)findViewById(R.id.txtEmps); 
     txtPro=(TextView)findViewById(R.id.txtPro); 
     list = (ListView)findViewById(android.R.id.list); 

     startPKCounter(); 
     } 
    @Override 
    protected void onStart() { 
     // TODO Auto-generated method stub 

     try{ 

      dbHelper=new DatabaseHelper(this); 
         txtEmps.setText(txtEmps.getText()+String.valueOf(dbHelper.getEmployeeCount())); 
      } 
     finally 
      { 
      } 
     super.onStart(); 
    } 
    private void startPKCounter() { 
     // TODO Auto-generated method stub 
     Toast.makeText(this, "Counted", Toast.LENGTH_SHORT).show(); 
    } 

    protected void onListItemClick(ListView l, View v, int position, long id) 
    { 
     int primaryValue= (int)v.getTag(cursor); 
     Toast.makeText(Final.this, primaryValue+"", Toast.LENGTH_SHORT).show(); 
    } 

這是給我的v.getTag錯誤（）。

Answer 1

protected void onListItemClick(ListView l, View v, int position, long id) 

查看long id的部分？那（id）是您點擊的列表項的主鍵。