Use last path segment as collection display name if there's no DAV:displayName

* use last path segment as collection display name if there's no DAV:displayName
* add Contacts Provider Settings again to show contacts without groups in all clients (bluetooth cars etc.)

app/build.gradle

@@ -17,8 +17,8 @@ android {
         minSdkVersion 14
         targetSdkVersion 22
 
-        versionCode 92
-        versionName "1.0.2"
+        versionCode 93
+        versionName "1.0.3"
 
         buildConfigField "long", "buildTime", System.currentTimeMillis() + "L"
     }

app/src/main/java/at/bitfire/davdroid/DavUtils.java

@@ -8,9 +8,20 @@
 
 package at.bitfire.davdroid;
 
+import android.support.annotation.NonNull;
+import android.text.TextUtils;
+
+import org.w3c.dom.Text;
+
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import ezvcard.util.StringUtils;
+import okhttp3.HttpUrl;
+
 public class DavUtils {
 
     public static String ARGBtoCalDAVColor(int colorWithAlpha) {
@@ -19,4 +30,16 @@ public class DavUtils {
         return String.format("#%06X%02X", color, alpha);
     }
 
+    public static String lastSegmentOfUrl(@NonNull String url) {
+        // the list returned by HttpUrl.pathSegments() is unmodifiable, so we have to create a copy
+        List<String> segments = new LinkedList<>(HttpUrl.parse(url).pathSegments());
+        Collections.reverse(segments);
+
+        for (String segment : segments)
+            if (!TextUtils.isEmpty(segment))
+                return segment;
+
+        return "/";
+    }
+
 }

app/src/main/java/at/bitfire/davdroid/resource/LocalCalendar.java

@@ -35,6 +35,7 @@ import java.util.LinkedList;
 import java.util.List;
 
 import at.bitfire.davdroid.App;
+import at.bitfire.davdroid.DavUtils;
 import at.bitfire.davdroid.model.CollectionInfo;
 import at.bitfire.ical4android.AndroidCalendar;
 import at.bitfire.ical4android.AndroidCalendarFactory;
@@ -43,6 +44,7 @@ import at.bitfire.ical4android.CalendarStorageException;
 import at.bitfire.ical4android.DateUtils;
 import at.bitfire.vcard4android.ContactsStorageException;
 import lombok.Cleanup;
+import okhttp3.HttpUrl;
 
 public class LocalCalendar extends AndroidCalendar implements LocalCollection {
 
@@ -89,7 +91,7 @@ public class LocalCalendar extends AndroidCalendar implements LocalCollection {
     private static ContentValues valuesFromCollectionInfo(CollectionInfo info) {
         ContentValues values = new ContentValues();
         values.put(Calendars.NAME, info.url);
-        values.put(Calendars.CALENDAR_DISPLAY_NAME, info.displayName);
+        values.put(Calendars.CALENDAR_DISPLAY_NAME, !TextUtils.isEmpty(info.displayName) ? info.displayName : DavUtils.lastSegmentOfUrl(info.url));
         values.put(Calendars.CALENDAR_COLOR, info.color != null ? info.color : defaultColor);
 
         if (info.readOnly)

app/src/main/java/at/bitfire/davdroid/resource/LocalTaskList.java

@@ -15,18 +15,21 @@ import android.database.Cursor;
 import android.net.Uri;
 import android.os.RemoteException;
 import android.support.annotation.NonNull;
+import android.text.TextUtils;
 
 import org.dmfs.provider.tasks.TaskContract.TaskLists;
 import org.dmfs.provider.tasks.TaskContract.Tasks;
 
 import java.io.FileNotFoundException;
 
+import at.bitfire.davdroid.DavUtils;
 import at.bitfire.davdroid.model.CollectionInfo;
 import at.bitfire.ical4android.AndroidTaskList;
 import at.bitfire.ical4android.AndroidTaskListFactory;
 import at.bitfire.ical4android.CalendarStorageException;
 import at.bitfire.ical4android.TaskProvider;
 import lombok.Cleanup;
+import okhttp3.HttpUrl;
 
 public class LocalTaskList extends AndroidTaskList implements LocalCollection {
 
@@ -67,7 +70,7 @@ public class LocalTaskList extends AndroidTaskList implements LocalCollection {
     private static ContentValues valuesFromCollectionInfo(CollectionInfo info) {
         ContentValues values = new ContentValues();
         values.put(TaskLists._SYNC_ID, info.url);
-        values.put(TaskLists.LIST_NAME, info.displayName);
+        values.put(TaskLists.LIST_NAME, !TextUtils.isEmpty(info.displayName) ? info.displayName : DavUtils.lastSegmentOfUrl(info.url));
         values.put(TaskLists.LIST_COLOR, info.color != null ? info.color : defaultColor);
         values.put(TaskLists.SYNC_ENABLED, 1);
         values.put(TaskLists.VISIBLE, 1);

app/src/main/java/at/bitfire/davdroid/syncadapter/ContactsSyncManager.java

@@ -10,9 +10,11 @@ package at.bitfire.davdroid.syncadapter;
 
 import android.accounts.Account;
 import android.content.ContentProviderClient;
+import android.content.ContentValues;
 import android.content.Context;
 import android.content.SyncResult;
 import android.os.Bundle;
+import android.provider.ContactsContract;
 
 import org.apache.commons.codec.Charsets;
 import org.apache.commons.lang3.StringUtils;
@@ -85,14 +87,21 @@ public class ContactsSyncManager extends SyncManager {
     protected void prepare() throws ContactsStorageException {
         // prepare local address book
         localCollection = new LocalAddressBook(account, provider);
+        LocalAddressBook localAddressBook = localAddressBook();
 
         String url = remote.url;
-        String lastUrl = localAddressBook().getURL();
+        String lastUrl = localAddressBook.getURL();
         if (!url.equals(lastUrl)) {
             App.log.info("Selected address book has changed from " + lastUrl + " to " + url + ", deleting all local contacts");
-            ((LocalAddressBook)localCollection).deleteAll();
+            localAddressBook.deleteAll();
         }
 
+        // set up Contacts Provider Settings
+        ContentValues settings = new ContentValues(2);
+        settings.put(ContactsContract.Settings.SHOULD_SYNC, 1);
+        settings.put(ContactsContract.Settings.UNGROUPED_VISIBLE, 1);
+        localAddressBook.updateSettings(settings);
+
         collectionURL = HttpUrl.parse(url);
         davCollection = new DavAddressBook(httpClient, collectionURL);