@Override
public int getItemViewType(int position) {
final int contactTileAdapterCount = mContactTileAdapter.getCount();
final int contactEntryListAdapterCount = mContactEntryListAdapter.getCount();
// There should be four kinds of types that are usually used, and one more exceptional
// type (IGNORE_ITEM_VIEW_TYPE), which sometimes comes from mContactTileAdapter.
//
// The four ordinary view types have the index equal to or more than 0, and less than
// mContactTileAdapter.getViewTypeCount()+ mContactEntryListAdapter.getViewTypeCount() + 2.
// (See also this class's getViewTypeCount())
//
// We have those values for:
// - The view types mContactTileAdapter originally has
// - The view types mContactEntryListAdapter originally has
// - mAccountFilterHeaderContainer ("all" section's account header), and
// - mLoadingView
//
// Those types should not be mixed, so we have a different range for each kinds of types:
// - Types for mContactTileAdapter ("tile" and "frequent" sections)
// They should have the index, >=0 and <mContactTileAdapter.getViewTypeCount()
//
// - Types for mContactEntryListAdapter ("all" sections)
// They should have the index, >=mContactTileAdapter.getViewTypeCount() and
// <(mContactTileAdapter.getViewTypeCount() + mContactEntryListAdapter.getViewTypeCount())
//
// - Type for "all" section's account header
// It should have the exact index
// mContactTileAdapter.getViewTypeCount()+ mContactEntryListAdapter.getViewTypeCount()
//
// - Type for "loading" view used during "all" section is being loaded.
// It should have the exact index
// mContactTileAdapter.getViewTypeCount()+ mContactEntryListAdapter.getViewTypeCount() + 1
//
// As an exception, IGNORE_ITEM_VIEW_TYPE (-1) will be remained as is, which will be used
// by framework's Adapter implementation and thus should be left as is.
if (position < contactTileAdapterCount) { // For "tile" and "frequent" sections
return mContactTileAdapter.getItemViewType(position);
} else if (position == contactTileAdapterCount) { // For "all" section's account header
return mContactTileAdapter.getViewTypeCount() + mContactEntryListAdapter.getViewTypeCount();
} else { // For "all" section
if (mContactEntryListAdapter.isLoading()) { // "All" section is being loaded.
return mContactTileAdapter.getViewTypeCount()
+ mContactEntryListAdapter.getViewTypeCount()
+ 1;
} else {
// "-1" for mAccountFilterHeaderContainer
final int localPosition = position - contactTileAdapterCount - 1;
final int type = mContactEntryListAdapter.getItemViewType(localPosition);
// IGNORE_ITEM_VIEW_TYPE must be handled differently.
return (type < 0) ? type : type + mContactTileAdapter.getViewTypeCount();
}
}
}
@Override
public int getViewTypeCount() {
// "+2" for mAccountFilterHeaderContainer and mLoadingView
return (mContactTileAdapter.getViewTypeCount()
+ mContactEntryListAdapter.getViewTypeCount()
+ 2);
}