Question

I have implemented one custom adapter for my list view having checkbox and text item. I can get the position through my overridden parameter. but how to get the id of my list row ?

following is code for custom adapter –

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View rowView = convertView;
        if (rowView == null) {
            LayoutInflater inflater = context.getLayoutInflater();
            rowView = inflater.inflate(R.layout.reminder_row, null);
            ViewHolder viewHolder = new ViewHolder();
            viewHolder.text = (TextView) rowView.findViewById(R.id.reminderRowTextId);
            viewHolder.reminderCheckBox = (CheckBox) rowView.findViewById(R.id.CheckBoxId);
            rowView.setTag(viewHolder);
        }

        final int pos = position;
        final ViewHolder holder = (ViewHolder) rowView.getTag();
        int idRow = holder.text.getId();
        Log.i(TAG, "id of item selected-->" + idRow); <<<<<<------- IT IS GIVING SOME VALUE LIKE 2030771-------->>>
        String s = names[position];
        holder.text.setText(s);

        holder.reminderCheckBox.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (holder.reminderCheckBox.isChecked()) {
                    Toast.makeText(getContext(), "pos-->chkd" + pos, Toast.LENGTH_SHORT).show();
                    long longPos = (long)pos;
                    dbHelper.completeTask(longPos + 1);

                } else {
                    Toast.makeText(getContext(), "pos-->un--chkd" + pos, Toast.LENGTH_SHORT).show();
                }
            }
        });

        holder.text.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getContext(), "TEXT CLICKED" + pos , Toast.LENGTH_SHORT).show();

                Intent intent = new Intent(context,ReminderModificationActivity.class);
                long longPos = (long)pos;
                intent.putExtra(TasksDBAdapter.KEY_ROWID, longPos + 1);
                Log.i(TAG, "row clickd --> " + longPos);
                ((Activity) context).startActivityForResult(intent, ACTIVITY_EDIT);
            }
        });
        return rowView;
    }

EDIT 1.1

public static final String KEY_TITLE = "title";                  
    public static final String KEY_BODY = "body";
    public static final String KEY_DATE_TIME = "reminder_date_time"; 
    public static final String KEY_ROWID = "_id";                
    public static final String KEY_IS_COMPLETE = "is_complete";
    private static final String TAG = "TasksDBAdapter";

private static final String DATABASE_CREATE =                        
           "create table " + DATABASE_TABLE + " ("
                   + KEY_ROWID + " integer primary key autoincrement, "
                   + KEY_IS_COMPLETE + " boolean default 'false', "
                   + KEY_TITLE + " text not null, " 
                   + KEY_BODY + " text , " 
                   + KEY_DATE_TIME + " text);"; 

Please have a look at marked line. Can anyone please help me with how to get the id. Please be detailed as I m learning android.
Thanks in advance,
Ray

Answer 1

You’re calling getId() on a TextView, which according to the docs returns the value associated with the android:id attribute. This value is auto generated, and is probably the same as R.id.reminderRowTextId.

Basically, you’re not actually setting a meaningful ID in your ViewHolder class. Just add another member variable, and store whatever you need.

To elaborate, an adapter is used to describe the size of a backing list/array, and provide a View for each element. To do this properly, you implement getView() and getItem().

getItem() takes a position, which is a parameter to getView(). Pass in position to getItem(), which will give you your item from SQLite. Get that object’s ID, and set a variable in ViewHolder.