Clearing RadioGroup inside a ListView

Question

I have a custom ListView set by an ArrayAdapter. Each row has a TextView and 3 RadioButtons.

The objects which populate the AdapterView look like this:

public class MyItem {

    public String title = "";
    public boolean rb1 = false;
    public boolean rb2 = false;
    public boolean rb3 = false;

    public MyItem(String title, boolean rb1, boolean rb2, boolean rb3) {
        this.title = title;
        this.rb1 = rb1;
        this.rb2 = rb2;
        this.rb3 = rb3;
    }

}

Inside the getView() method, I'm setting a OnLongClickListener, because I'd like to clear the selection after a long press on a row:

public class MyAdapter extends ArrayAdapter<MyItem> {

    private Context context;
    private int layoutResourceId;
    private ArrayList<MyItem> items = null;

    public MyAdapter(Context context, int textViewResourceId, ArrayList<MyItem> objects) {
        super(context, textViewResourceId, objects);
        this.layoutResourceId = textViewResourceId;
        this.context = context;
        this.items = objects;
    }

    @Override
    public View getView(final int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        View row = convertView;
        final MyItemHolder holder;

        if (row == null) {
            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            row = inflater.inflate(layoutResourceId, parent, false);
            holder = new MyItemHolder();
            holder.tvTitle = (TextView) row.findViewById(R.id.tvTitle);
            holder.rb1 = (RadioButton) row.findViewById(R.id.rb1);
            holder.rb2 = (RadioButton) row.findViewById(R.id.rb2);
            holder.rb3 = (RadioButton) row.findViewById(R.id.rb3);
            row.setTag(holder);
        } else {
            holder = (MyItemHolder)row.getTag();
        }

        String title = items.get(position).title;
        Boolean rb1Checked = items.get(position).rb1;
        Boolean rb2Checked = items.get(position).rb2;
        Boolean rb3Checked = items.get(position).rb3;

        holder.tvTitle.setText(title);
        holder.rb1.setChecked(rb1Checked);
        holder.rb2.setChecked(rb2Checked);
        holder.rb3.setChecked(rb3Checked);

        row.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                items.get(position).rb1 = false;
                items.get(position).rb2 = false;
                items.get(position).rb3 = false;
                holder.rb1.setChecked(false);
                holder.rb2.setChecked(false);
                holder.rb3.setChecked(false);
                notifyDataSetChanged();
                return true;
            }
        });

        return row;
    }

    static class MyItemHolder  {
        TextView tvTitle;
        RadioButton rb1;
        RadioButton rb2;
        RadioButton rb3;
    }

}

This way it works, BUT... Let's say, the first RadioButton was selected, after a long press on the row, none of the RadioButtons are selected, but I'm unable to select the first one again. I can select the second or third one, but not the first one.

Try using `your_radiobutton1.setChecked(false);` and do this for all of your RadioButtons inside the specific item that you want to clear. — dalla92, Dec 22 '17 at 10:46

score 1 · Accepted Answer · answered Dec 22 '17 at 11:06

1

You can solve this problem by using

radioGroup.clearCheck()

instead of

radioButtonA.setChecked(false)

In order to do this, you need to get the reference to the radio group for every item you want to clear.

answered Dec 22 '17 at 11:06

dalla92

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Clearing RadioGroup inside a ListView

1 Answers1