Helpful Samples

Contact Sync Adapter http://developer.android.com/resources/samples/SampleSyncAdapter/index.html

Simple Contact Selection Example http://www.pocketmagic.net/?p=1870

LDAP Library: http://www.unboundid.com/products/ldap-sdk/

Android Preferences: http://www.kaloer.com/android-preferences

Alternative, but not used LDAP Library:

JOpenLDAP repository URL http://www.openldap.org/software/repo/openldap-jldap.git

OR:

git clone git://git.openldap.org/openldap-jldap.git jldap

If you want to compile JOpenLDAP with Java 1.6, the javac.xml script must be changed. Just change the target version from 1.2 to 1.6. After this little modification, the project might not compile faultless, but there will be a jldap.jar library in the debug_lib directory, which can be used in the android project.