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POAndroid ListView with multiple select and custom adapter
 

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  1. POAndroid ListView with multiple select and custom adapter
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    <p>I have a <code>ListView</code> with a custom adapter. The <code>ListView</code> allows multiple select, but somehow it's not recognising when an item is selected.</p> <p>I've already made the adapter items extend Checkable, but still the <code>getCheckedItemPositions()</code>returns an array of falses.</p> <p>I guess there's something fundamental I'm doing wrong, but I have been unable so far to find examples of multiple select ListViews where the adapter was not an ArrayAdapter using the default layout for multiple selects.</p> <p>Any help would be much appreciated.</p> <p>Code is below:</p> <p>Main class:</p> <pre><code>listView = (ListView) findViewById(R.id.cardlist); tca = new TextCardAdapter(mInflater); listView.setAdapter(tca); </code></pre> <p>Adapter:</p> <pre><code>public class TextCardAdapter extends BaseAdapter { private int count = 0; private List&lt;CheckableCard&gt; cardList = new ArrayList&lt;CheckableCard&gt;(); private LayoutInflater mInflater; public TextCardAdapter(LayoutInflater inflater) { this.mInflater = inflater; } @Override public int getCount() { return count; } @Override public Object getItem(int position) { return cardList.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { final ViewHolder holder; if (convertView == null) { convertView = mInflater.inflate(R.layout.textlayout_row, null, false); convertView.setClickable(true); holder = new ViewHolder(); holder.text = (TextView) convertView.findViewById(R.id.card_name); holder.checkbox = (CheckBox) convertView.findViewById(R.id.checkbox); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } final CheckableCard card = cardList.get(position); holder.text.setText(card.card.toString()); holder.checkbox.setChecked(card.isChecked()); holder.checkbox.setOnClickListener(card.checkListener); convertView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { card.checkListener.onClick(v); holder.checkbox.setChecked(card.isChecked()); } }); return convertView; } public void add(Card card) { cardList.add(new CheckableCard(card)); count++; notifyDataSetChanged(); } public void addAll(Collection&lt;Card&gt; cardColl) { for (Card c : cardColl) add(c); } public void removeAll() { count = 0; cardList.clear(); notifyDataSetChanged(); } public Card getCard(int position) { CheckableCard cc = (CheckableCard) getItem(position); if (cc == null) return null; return cc.card; } public class CheckableCard implements Checkable { private boolean checked = false; public final Card card; public final OnClickListener checkListener; public CheckableCard(Card card) { this.card = card; checkListener = new OnClickListener() { @Override public void onClick(View v) { toggle(); } }; } @Override public boolean isChecked() { return checked; } @Override public void setChecked(boolean checked) { this.checked = checked; } @Override public void toggle() { checked = !checked; } } static class ViewHolder { TextView text; CheckBox checkbox; } } </code></pre>
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    1. COhave you found any solution for this problem?
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    2. COI found a generic method to solve your kind of problem in a similar stackoverflow question ( http://stackoverflow.com/questions/2652109/multiple-choice-list-with-custom-view ): http://www.marvinlabs.com/2010/10/custom-listview-ability-check-items/
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    3. COMy solution eventually was to store the list of CheckableCards, and when retrieving all checked cards, iterating through the list and returning the ones which returned isChecked() as true.
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