How to use

withMultiSelect

method

in

com.mikepenz.fastadapter.FastAdapter

/**
 * get the adapter (null safe)
 *
 * @return the FastAdapter used with this drawer
 */
protected FastAdapter<IDrawerItem> getAdapter() {
  if (mAdapter == null) {
    mAdapter = FastAdapter.with(Arrays.asList(mHeaderAdapter, mItemAdapter, mFooterAdapter), Arrays.<IAdapterExtension<IDrawerItem>>asList(mExpandableExtension));
    mAdapter.withSelectable(true);
    mAdapter.withMultiSelect(false);
    mAdapter.withAllowDeselection(false);
    mAdapter.setHasStableIds(mHasStableIds);
  }
  return mAdapter;
}

mAdapter.withMultiSelect(mMultiSelect);
if (mMultiSelect) {
  mAdapter.withSelectOnLongClick(false);

mFastAdapter.withMultiSelect(true);
mFastAdapter.withSelectOnLongClick(true);
mFastAdapter.withSelectionListener(new ISelectionListener<SimpleItem>() {

mFastAdapter.withMultiSelect(true);
mFastAdapter.withSelectOnLongClick(true);
mFastAdapter.withOnPreClickListener(new OnClickListener<IItem>() {

.addExtension(mExpandableExtension)
.withSelectable(true)
.withMultiSelect(true)
.withSelectOnLongClick(true)
.withOnPreClickListener(new OnClickListener<IItem>() {

mFastAdapter.withMultiSelect(true);
mFastAdapter.withSelectOnLongClick(false);
selectExtension = mFastAdapter.getExtension(SelectExtension.class);

mFastAdapter.withMultiSelect(true);
mFastAdapter.withSelectOnLongClick(false);