从Sqlite数据库通过列表视图获得行的ID

Question

我需要从sqlite数据库填充列表视图。现在当我点击列表中的行时，它将显示在详细视图中。我想从sqlite表中获取行标识，我想传递给下一个意图。如何获得sqlite表的id。

这是我的代码，

public class Message_Adapter extends ArrayAdapter<Message> { 
     Activity activity; 
     int layoutResourceId; 
     Message user; 
     ArrayList<Message> data = new ArrayList<Message>(); 

     public Message_Adapter(Activity act, int layoutResourceId, 
      List<Message> data) { 
      super(act, layoutResourceId, data); 
      this.layoutResourceId = layoutResourceId; 
      this.activity = act; 
      this.data = (ArrayList<Message>) data; 
      notifyDataSetChanged(); 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      View row = convertView; 
      UserHolder holder = null; 

      if (row == null) { 
      LayoutInflater inflater = LayoutInflater.from(activity); 

      row = inflater.inflate(layoutResourceId, parent, false); 
      holder = new UserHolder(); 
      holder.fromnum = (TextView) row.findViewById(R.id.fromno); 
      holder.tonum = (TextView) row.findViewById(R.id.tonum); 
      holder.body= (TextView) row.findViewById(R.id.msgbody); 
      holder.date = (TextView) row.findViewById(R.id.msgdate); 
      holder.delete = (Button) row.findViewById(R.id.btn_delete); 
      holder.status = (TextView) row.findViewById(R.id.staty); 
      row.setTag(holder); 
      } else { 
      holder = (UserHolder) row.getTag(); 
      } 
      user = data.get(position); 

      holder.delete.setTag(user.getID()); 
      holder.fromnum.setText(user.getmsgfrom()); 
      holder.tonum.setText(user.getto()); 
      holder.body.setText(user.getmsg()); 
      holder.date.setText(user.getdate()); 
      holder.status.setText(user.getstatus()); 

      itemClickListener = new OnItemClickListener() { 
       @Override 
        public void onItemClick(AdapterView<?> arg0, View view, 
          int pos, long arg3) { 

       int product = user.getID(); 

        // Launching new Activity on selecting single List Item 
        Intent i = new Intent(getApplicationContext(), DetailedMsg.class); 
        // sending data to new activity 
        i.putExtra("Product", product); 
        startActivity(i); 

        } 
        }; 


      holder.delete.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(final View v) { 
       // TODO Auto-generated method stub 

       // show a message while loader is loading 

       AlertDialog.Builder adb = new AlertDialog.Builder(activity); 
       adb.setTitle("Delete?"); 
       adb.setMessage("Are you sure you want to delete "); 
       final int user_id = Integer.parseInt(v.getTag().toString()); 
       adb.setNegativeButton("Cancel", null); 
       adb.setPositiveButton("Ok", 
        new AlertDialog.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, 
         int which) { 
         // MyDataObject.remove(positionToRemove); 
         DatabaseHandler dBHandler = new DatabaseHandler(
          activity.getApplicationContext()); 
         dBHandler.Delete_Contact(user_id); 
         InboxActivity.this.onResume(); 

        } 
        }); 
       adb.show(); 
      } 

      }); 
      return row; 

     } 



     } 
     class UserHolder { 
      TextView fromnum; 
      TextView tonum; 
      TextView body; 
      TextView date; 
      TextView status; 
      Button delete; 
     } 

Answer 1

long arg3是id。所以这应该工作：

 ..... 

    i.putExtra("idInDB", arg3); 

    .....