How to get last ListView item position

Question

I created a listview with radiobutton. The listview is like the image below:

And my getView is:

public View getView(final int position, View convertView, ViewGroup parent) {
    ViewHolder holder = null;
    PaymentData rowItem = getItem(position);
    LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    if (convertView == null) {
        convertView = mInflater.inflate(
                com.android.paypal.homeactivity.R.layout.list_item, null);
        holder = new ViewHolder();
        holder.radioBtn = (RadioButton) convertView
                .findViewById(com.android.paypal.homeactivity.R.id.rdb_payment_method);
        holder.btPaymentMethod = (Button) convertView
                .findViewById(com.android.paypal.homeactivity.R.id.bt_item_event);
        convertView.setTag(holder);
    } else
        holder = (ViewHolder) convertView.getTag();

    holder.radioBtn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            if ((position != mSelectedPosition) && (mSelectedRB != null)) {
                mSelectedRB.setChecked(false);
            }

            mSelectedPosition = position;
            mSelectedRB = (RadioButton) v;
        }
    });

    if (mSelectedPosition != position) {
        holder.radioBtn.setChecked(false);
    } else {
        holder.radioBtn.setChecked(true);
        if (mSelectedRB != null && holder.radioBtn != mSelectedRB) {
            mSelectedRB = holder.radioBtn;
        }
    }

    holder.radioBtn.setText(rowItem.getRdbText());
    holder.btPaymentMethod.setText(rowItem.getBtText());
    return convertView;

}

I want to auto checked the last radiobutton when the screen comes first. How can I achieve this.

Solution 1

Hold a boolean to say whether user has himself selected anything. Let the boolean be userSelected = false;

Now you could do in getView():

if(position==getCount()-1 && userSelected==false)
    holder.radioBtn.setChecked(true);
else
    holder.radioBtn.setChecked(false);

In onItemClick, when the user has made a selection himself, just set userSelected=true;

Solution 2

Your last position is , int lastpostion = getcount() -1; where getcount() is a method in the adpater class

Comments

[androidcodehunter]

At first I want to check the last position. Is this is last position then I want radion button setChecked(true).

[androidcodehunter]

Exactly what I want. Thank you Aswin Kumar.

[Sagar Vasoya]

it's Correct Answer