A ListView with pinned section headers for Android
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README.markdown

README.markdown

PinnedHeaderListView

This library provides a sectioned ListView with pinned headers. A custom adapter is provided which must be extended and used with the custom ListView.

The usage of this library is simple. You need to create an adapter that extends SectionedBaseAdapter.

There are 6 methods that need to be overridden:

  • public Object getItem(int section, int position);
  • public long getItemId(int section, int position);
  • public int getSectionCount();
  • public int getCountForSection(int section);
  • public View getItemView(int section, int position, View convertView, ViewGroup parent);
  • public View getSectionHeaderView(int section, View convertView, ViewGroup parent);

getItemView and getSectionHeaderView should be treated as you would the getItemView method from a normal Adapter. The same goes for getItem and getItemId.

getSectionCount and getCountForSectionreplace the getCount() method from a standard adapter. You should return the number of sections in your list in getSectionCount and the number of items in a section in getCountForSection.

In addition to these methods, there are a few others you may override:

  • public int getItemViewType(int section, int position);
  • public int getItemViewTypeCount();
  • public int getSectionHeaderViewType(int section);
  • public int getSectionHeaderViewTypeCount();

These replace the getViewTypeCount() and getItemViewType(int position) methods from a standard adapter

Note that you can return the same ItemViewType for a header and a non header and these will be cached seperately by the underlying ListView.
That is, you will never get a header view passed in as the convertView in public View getItemView(int section, int position, View convertView, ViewGroup parent);, nor will you get an item view passed in as the convertView in public View getSectionHeaderView(int section, View convertView, ViewGroup parent);

See the provided example for more details.

License

Copyright (c) 2012, James Smith
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Neither the name of the nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL James Smith BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.