avoid NullPointerExceptions when contact data rows with custom types have no LABEL

src/at/bitfire/davdroid/resource/Event.java

@@ -122,7 +122,7 @@ public class Event extends Resource {
 		ComponentList events = ical.getComponents(Component.VEVENT);
 		if (events == null || events.isEmpty())
 			return;
-		VEvent event = (VEvent)events.get(0); 
+		VEvent event = (VEvent)events.get(0);
 		
 		if (event.getUid() != null)
 			uid = event.getUid().getValue();

src/at/bitfire/davdroid/resource/LocalAddressBook.java

@@ -212,7 +212,9 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 				number.addType(Contact.PHONE_TYPE_MMS);
 				break;
 			case Phone.TYPE_CUSTOM:
-				number.addType(TelephoneType.get(labelToXName(cursor.getString(1))));
+				String customType = cursor.getString(1);
+				if (customType != null && !customType.isEmpty())
+					number.addType(TelephoneType.get(labelToXName(customType)));
 			}
 			c.getPhoneNumbers().add(number);
 		}
@@ -234,7 +236,9 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 				email.addType(Contact.EMAIL_TYPE_MOBILE);
 				break;
 			case Email.TYPE_CUSTOM:
-				email.addType(EmailType.get(labelToXName(cursor.getString(2))));
+				String customType = cursor.getString(2);
+				if (customType != null && !customType.isEmpty())
+					email.addType(EmailType.get(labelToXName(customType)));
 				break;
 			}
 			c.getEmails().add(email);
@@ -310,7 +314,9 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 					impp.addType(ImppType.WORK);
 					break;
 				case Im.TYPE_CUSTOM:
-					impp.addType(ImppType.get(labelToXName(cursor.getString(2))));
+					String customType = cursor.getString(2);
+					if (customType != null && !customType.isEmpty())
+						impp.addType(ImppType.get(labelToXName(customType)));
 					break;
 				}
 				c.getImpps().add(impp);
@@ -351,7 +357,9 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 				address.addType(AddressType.WORK);
 				break;
 			case StructuredPostal.TYPE_CUSTOM:
-				address.addType(AddressType.get(labelToXName(cursor.getString(2))));
+				String customType = cursor.getString(2);
+				if (customType != null && !customType.isEmpty())
+					address.addType(AddressType.get(labelToXName(customType)));
 				break;
 			}
 			address.setStreetAddress(cursor.getString(3));

src/at/bitfire/davdroid/resource/LocalCollection.java

@@ -100,9 +100,6 @@ public abstract class LocalCollection<T extends Resource> {
 		LinkedList<T> fresh = new LinkedList<T>();
 		while (cursor != null && cursor.moveToNext()) {
 			T resource = findById(cursor.getLong(0), true);
-			/*String	uid = randomUID(),
-					resourceName = uid.replace("@", "_") + fileExtension();
-			resource.setUid(uid);*/
 			resource.initialize();
 
 			// new record: set generated UID + remote file name in database

src/at/bitfire/davdroid/webdav/WebDavResource.java

@@ -294,7 +294,7 @@ public class WebDavResource {
 			multiget.prop.addressData = new DavProp.DavPropAddressData();
 		else if (type == MultigetType.CALENDAR)
 			multiget.prop.calendarData = new DavProp.DavPropCalendarData();
-		
+				
 		multiget.hrefs = new ArrayList<DavHref>(names.length);
 		for (String name : names)
 			multiget.hrefs.add(new DavHref(location.resolve(name).getRawPath()));