Merge "Fixed group and child view caching in SimpleExpandableListAdapter." (6a8186fb) · Commits · e / os / android_frameworks_base

core/java/android/widget/SimpleExpandableListAdapter.java

+52 −0

Original line number	Diff line number	Diff line
		@@ -38,6 +38,8 @@ import java.util.Map;
		*/
		public class SimpleExpandableListAdapter extends BaseExpandableListAdapter {
		private List<? extends Map<String, ?>> mGroupData;
		// Keeps track of if a group is currently expanded or not
		private boolean[] mIsGroupExpanded;
		private int mExpandedGroupLayout;
		private int mCollapsedGroupLayout;
		private String[] mGroupFrom;
		@@ -196,6 +198,8 @@ public class SimpleExpandableListAdapter extends BaseExpandableListAdapter {
		int childLayout, int lastChildLayout, String[] childFrom,
		int[] childTo) {
		mGroupData = groupData;
		// Initially all groups are not expanded
		mIsGroupExpanded = new boolean[groupData.size()];
		mExpandedGroupLayout = expandedGroupLayout;
		mCollapsedGroupLayout = collapsedGroupLayout;
		mGroupFrom = groupFrom;
		@@ -298,4 +302,52 @@ public class SimpleExpandableListAdapter extends BaseExpandableListAdapter {
		return true;
		}

		/**
		* {@inheritDoc}
		* @return 1 for the last child in a group, 0 for the other children.
		*/
		@Override
		public int getChildType(int groupPosition, int childPosition) {
		final int childrenInGroup = getChildrenCount(groupPosition);
		return childPosition == childrenInGroup - 1 ? 1 : 0;
		}

		/**
		* {@inheritDoc}
		* @return 2, one type for the last child in a group, one for the other children.
		*/
		@Override
		public int getChildTypeCount() {
		return 2;
		}

		/**
		* {@inheritDoc}
		* @return 1 for an expanded group view, 0 for a collapsed one.
		*/
		@Override
		public int getGroupType(int groupPosition) {
		return mIsGroupExpanded[groupPosition] ? 1 : 0;
		}

		/**
		* {@inheritDoc}
		* @return 2, one for a collapsed group view, one for an expanded one.
		*/
		@Override
		public int getGroupTypeCount() {
		return 2;
		}

		/** {@inheritDoc} */
		@Override
		public void onGroupCollapsed(int groupPosition) {
		mIsGroupExpanded[groupPosition] = false;
		}

		/** {@inheritDoc} */
		@Override
		public void onGroupExpanded(int groupPosition) {
		mIsGroupExpanded[groupPosition] = true;
		}
		}