Simple container for checked items for the android list view. With the 'Rule', you could control the checked state of a certain item.

gistfile1.java

public class CheckedItemData {

	SparseBooleanArray mCheckedItemStates = new SparseBooleanArray();
	LinkedList<Rule> mRules = new LinkedList<Rule>();

	public void addRule(Rule rule) {
		mRules.add(rule);
	}
	
	public int getCount() {
		return mCheckedItemStates.size();
	}
	
	public void clear() {
		mCheckedItemStates.clear();
	}

	public boolean isItemChecked(int id) {
		return mCheckedItemStates.get(id);
	}

	public boolean setItemChecked(int id, boolean value) {
		boolean oldValue = mCheckedItemStates.get(id);
		if (oldValue != value) {
			for (Rule rule : mRules) {
				if (!rule.apply(id, oldValue)) {
					return false;
				}
			}
			if (value) {
				mCheckedItemStates.put(id, value);
			} else {
				mCheckedItemStates.delete(id);
			}
			return true;
		}
		return false;
	}

	public boolean toggleItem(int id) {
		return setItemChecked(id, !isItemChecked(id));
	}

	public int[] getCheckedItemIds() {
		int count = mCheckedItemStates.size();
		int[] result = new int[count];
		for (int i = 0; i < count; i++) {
			result[i] = mCheckedItemStates.keyAt(i);
		}
		return result;
	}

	public abstract static class Rule {
		public boolean apply(int id, boolean value) {
			if (validate(id, value)) {
				return true;
			} else {
				onFailed(id, value);
				return false;
			}
		}
		protected abstract boolean validate(int id, boolean value);
		protected abstract void onFailed(int id, boolean value);
	}

	public static class Unmodifiable extends Rule {
		
		private int[] mTargets;
		
		public Unmodifiable(int[] targets) {
			this.mTargets = targets;
		}

		@Override
		public boolean validate(int id, boolean value) {
			for (int targetId : mTargets) {
				if (targetId == id) {
					return false;
				}
			}
			return true;
		}

		@Override
		public void onFailed(int id, boolean value) {
			Log.i("Unmodifiable", "You cannot change the state of " + id);
		}

	}

}