An alternative to store key-value paired properties in appSettings in web.config we can use Sharepoint_config database by creating our own SPPersistedObject. First we have to create a class which inherits from SPPersistedObject and decorate its properties with [Persisted]: namespace Takana.SharePoint { public class Settings: SPPersistedObject { \[Persisted\] public string DbConString; public LinkCheckerPersistedSettings() { } public LinkCheckerPersistedSettings(string name, SPPersistedObject parent) : base(name, parent) { } } } ```Then we must create such an object.

Now a user can choose what to see on the map. Maybe only bike pumps or everything. To do that I created a new class ListPreferenceMultiSelect extends ListPreference which is more or less taken from DroidWeb tutorial. The source ListPreferenceMultiSelect.java was improved a little bit: The constructor checks if entries are not empty before creating indices. For the second a new method was added: prepareValueToStore, the opposite one of parseStoredValue. Here is my ListPreferenceMultiSelect.