protected ArrayList<String> readTeams() {
		ArrayList<String> teams = new ArrayList<String>();
		try {
			for (String prefKey : prefs.keys()) {
				if (prefKey.startsWith(PROP_TEAM_PRAEFIX)) {
					String value = prefs.get(prefKey, null);
					if (value != null) {
						String[] s = prefKey.split("\\.");
						if (s != null && s.length > 1
								&& s[0].equals(PROP_TEAM_PRAEFIX)) {
							teams.add(prefs.get(prefKey, ""));
						}
					}
				}
			}
		} catch (BackingStoreException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if (teams.isEmpty()) {
			teams.add("+DieApomatiker");
		}
		return teams;
	}