Question

I am new to android and am trying to develop a new android app. But I am struggling to siolve one of the problems in my project.

I am using a listview extended from baseadapter and need to add a button in each row of thelistview. When I click on the button in any row of the listview, I want that it should be removed. However when I do so, some of the other buttons also get removed in the listview.

How can I solve this problem? Thank you..

Answer 1

You have an adapter, activity and some sort of data source

In your adapter you attach some data to buttons to be able to tell one from another:

public class ExpAdapter extends ListAdapter {

    @Override
    public View getView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
                /* SOME CODE HERE*/
        convertViewButton.setTag(buttonId);
        return convertView;
    }
                /* SOME CODE HERE*/
}

in your activity you mark button id as the one to be hidden:

        public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            storageOfHiddenButtonsIds.add((Long)arg1.getTag());
        }};

and then ListAdapter changes like this:

@Override
public View getView(int groupPosition, boolean isExpanded,
        View convertView, ViewGroup parent) {
            /* SOME CODE HERE*/

    convertViewButton.setTag(buttonId);

    if(storageOfHiddenButtonsIds.contains(buttonId))
    {
      convertViewButton.setVisiblity(View.GONE);
    }
    return convertView;
}

and when you want your adatper to change you, don’t forget to call

this.expAdapterAllTaks.notifyDataSetChanged();

Sorry for any errors in my code, but i just wanted to give you an idea.