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PORefresh of a listview in a CustomArrayAdaptor with checbox
 

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  1. PORefresh of a listview in a CustomArrayAdaptor with checbox
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    <p>I'm trying to implement a custom array adaptor that has to visualise a list view with one text and one checkbox. I need to remember the selection and I want that every time one option is chececked all the others become unchecked as a radiobutton.</p> <p>This is my code </p> <pre><code>public class RAnswerAdapter extends ArrayAdapter&lt;RAnswer&gt; { private final ArrayList&lt;RAnswer&gt; list; private final Activity context; public RAnswerAdapter(Activity context, ArrayList&lt;RAnswer&gt; list) { super(context, R.layout.answer_item, list); this.context = context; this.list = list; } static class ViewHolder { protected TextView text; protected CheckBox checkbox; } @Override public View getView(int position, View convertView, ViewGroup parent) { View view = null; if (convertView == null) { LayoutInflater inflator = context.getLayoutInflater(); view = inflator.inflate(R.layout.answer_item_radio, null); final ViewHolder viewHolder = new ViewHolder(); viewHolder.text = (TextView) view.findViewById(R.id.answerName); viewHolder.checkbox = (CheckBox) view.findViewById(R.id.checkAnsw); viewHolder.checkbox .setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { Answer element = (Answer) viewHolder.checkbox.getTag(); for(Answer a: list) //if true if(a.isSelected()) //I set at false a.setSelected(false); //I set the new at true element.setSelected(buttonView.isChecked()); //I refresh the list notifyDataSetChanged(); } }); view.setTag(viewHolder); viewHolder.checkbox.setTag(list.get(position)); } else { view = convertView; ((ViewHolder) view.getTag()).checkbox.setTag(list.get(position)); } ViewHolder holder = (ViewHolder) view.getTag(); holder.text.setText(list.get(position).getAnswer_option()); holder.checkbox.setChecked(list.get(position).isSelected()); return view; } </code></pre> <p>}</p> <p>The code actually works in a strange way... The first 4 element of the list work perfectly and all the others aren't checkable! Why this? Where is the error?</p> <p>Thanks for the help</p>
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    1. USmichoprogrammer
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    1. COAre the first four elements the only visible elements? ie The error happens when you scroll to a row and check that box?
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    2. COAlso, please post the logcat errors otherwise we just have to guess...
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    3. COIf there are less then four elements the error happens only on the first (ex: there are 3 elements and it works only on the first 2 elements). They aren't the only visible. Usually I can see at least 8 elements. I know that is very strange! In the logcat there are no errors!
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      1. USmichoprogrammer
 

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