Proof of concept: create remote address books, delete remote collections

app/build.gradle

@@ -34,6 +34,7 @@ android {
     }
 
     lintOptions {
+        disable 'ExtraTranslation'
         disable 'IconColors'
         disable 'IconLauncherShape'
         disable 'IconMissingDensityFolder'

app/src/main/AndroidManifest.xml

@@ -121,7 +121,6 @@
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
-
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
@@ -129,8 +128,9 @@
             android:name=".ui.AccountActivity"
             android:parentActivityName=".ui.AccountsActivity">
         </activity>
-        <activity android:name=".ui.AccountSettingsActivity">
+        <activity android:name=".ui.AccountSettingsActivity"/>
-        </activity>
+        <activity android:name=".ui.CreateAddressBookActivity"
+            android:label="@string/create_address_book_title"/>
         <activity
             android:name=".ui.DebugInfoActivity"
             android:exported="true"

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

@@ -22,6 +22,7 @@ import java.util.Locale;
 import java.util.concurrent.TimeUnit;
 
 import at.bitfire.dav4android.BasicDigestAuthenticator;
+import at.bitfire.davdroid.syncadapter.AccountSettings;
 import de.duenndns.ssl.MemorizingTrustManager;
 import android.support.annotation.NonNull;
 import lombok.RequiredArgsConstructor;
@@ -84,6 +85,10 @@ public class HttpClient {
         return builder.build();
     }
 
+    public static OkHttpClient addAuthentication(@NonNull OkHttpClient httpClient, @NonNull AccountSettings accountSettings) {
+        return addAuthentication(httpClient, accountSettings.username(), accountSettings.password(), accountSettings.preemptiveAuth());
+    }
+
     public static OkHttpClient addAuthentication(@NonNull OkHttpClient httpClient, @NonNull String host, @NonNull String username, @NonNull String password) {
         return httpClient.newBuilder()
                 .authenticator(new BasicDigestAuthenticator(host, username, password))

app/src/main/java/at/bitfire/davdroid/model/CollectionInfo.java

@@ -10,6 +10,8 @@ package at.bitfire.davdroid.model;
 
 import android.content.ContentValues;
 
+import java.io.Serializable;
+
 import at.bitfire.dav4android.DavResource;
 import at.bitfire.dav4android.Property;
 import at.bitfire.dav4android.property.AddressbookDescription;
@@ -25,7 +27,7 @@ import lombok.ToString;
 import at.bitfire.davdroid.model.ServiceDB.*;
 
 @ToString
-public class CollectionInfo {
+public class CollectionInfo implements Serializable {
     public long id;
     public Long serviceID;
 

app/src/main/java/at/bitfire/davdroid/model/DavService.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ */
+
+package at.bitfire.davdroid.model;
+
+import android.content.ContentValues;
+
+public class DavService {
+
+    public long id;
+    public String accountName, service, principal;
+    public long lastRefresh;
+
+
+    public static DavService fromDB(ContentValues values) {
+        DavService service = new DavService();
+        service.id = values.getAsLong(ServiceDB.Services.ID);
+        service.accountName = values.getAsString(ServiceDB.Services.ACCOUNT_NAME);
+        service.service = values.getAsString(ServiceDB.Services.SERVICE);
+        service.principal = values.getAsString(ServiceDB.Services.PRINCIPAL);
+        //service.lastRefresh = values.getAsLong(ServiceDB.Services.LAST_REFRESH);
+        return service;
+    }
+
+}

app/src/main/java/at/bitfire/davdroid/model/HomeSet.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ */
+
+package at.bitfire.davdroid.model;
+
+import android.content.ContentValues;
+
+import lombok.ToString;
+
+@ToString
+public class HomeSet {
+
+    public long id, serviceID;
+    public String URL;
+
+    public static HomeSet fromDB(ContentValues values) {
+        HomeSet homeSet = new HomeSet();
+        homeSet.id = values.getAsLong(ServiceDB.HomeSets.ID);
+        homeSet.serviceID = values.getAsLong(ServiceDB.HomeSets.SERVICE_ID);
+        homeSet.URL = values.getAsString(ServiceDB.HomeSets.URL);
+        return homeSet;
+    }
+
+}

app/src/main/java/at/bitfire/davdroid/ui/AccountActivity.java

@@ -34,11 +34,13 @@ import android.os.IBinder;
 import android.provider.CalendarContract;
 import android.provider.ContactsContract;
 import android.support.design.widget.Snackbar;
+import android.support.v4.app.DialogFragment;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.AppCompatRadioButton;
 import android.support.v7.widget.CardView;
 import android.support.v7.widget.Toolbar;
 import android.text.TextUtils;
+import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -49,8 +51,10 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.CheckBox;
 import android.widget.ListView;
+import android.widget.PopupMenu;
 import android.widget.ProgressBar;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import java.io.IOException;
 import java.util.LinkedList;
@@ -66,13 +70,14 @@ import at.bitfire.davdroid.model.ServiceDB.Services;
 import at.bitfire.ical4android.TaskProvider;
 import lombok.Cleanup;
 
-public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener, LoaderManager.LoaderCallbacks<AccountActivity.AccountInfo> {
+public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener, PopupMenu.OnMenuItemClickListener, LoaderManager.LoaderCallbacks<AccountActivity.AccountInfo> {
 
     public static final String EXTRA_ACCOUNT_NAME = "account_name";
 
     private Account account;
     private AccountInfo accountInfo;
 
+    ListView listCalDAV, listCardDAV;
     Toolbar tbCardDAV, tbCalDAV;
 
     @Override
@@ -150,7 +155,9 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
                 startService(intent);
                 break;
             case R.id.create_address_book:
-                // TODO
+                intent = new Intent(this, CreateAddressBookActivity.class);
+                intent.putExtra(CreateAddressBookActivity.EXTRA_ACCOUNT, account);
+                startActivity(intent);
                 break;
             case R.id.refresh_calendars:
                 intent = new Intent(this, DavService.class);
@@ -165,7 +172,7 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
 
     /* LOADERS AND LOADED DATA */
 
-    public static class AccountInfo {
+    protected static class AccountInfo {
         ServiceInfo carddav, caldav;
 
         public static class ServiceInfo {
@@ -217,11 +224,42 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
         }
     };
 
+    private AdapterView.OnItemLongClickListener onItemLongClickListener = new AdapterView.OnItemLongClickListener() {
+        @Override
+        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
+            final ListView list = (ListView)parent;
+            final ArrayAdapter<CollectionInfo> adapter = (ArrayAdapter)list.getAdapter();
+            final CollectionInfo info = adapter.getItem(position);
+
+            PopupMenu popup = new PopupMenu(AccountActivity.this, view, Gravity.CENTER);
+            popup.inflate(R.menu.account_collection_operations);
+            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
+                @Override
+                public boolean onMenuItemClick(MenuItem item) {
+                    switch (item.getItemId()) {
+                        case R.id.delete_collection:
+                            DeleteCollectionFragment.newInstance(account, info).show(getSupportFragmentManager(), null);
+                            break;
+                    }
+                    return true;
+                }
+            });
+            popup.show();
+
+            // long click was handled
+            return true;
+        }
+    };
+
     @Override
     public Loader<AccountInfo> onCreateLoader(int id, Bundle args) {
         return new AccountLoader(this, args.getString(EXTRA_ACCOUNT_NAME));
     }
 
+    public void reload() {
+        getLoaderManager().restartLoader(0, getIntent().getExtras(), this);
+    }
+
     @Override
     public void onLoadFinished(Loader<AccountInfo> loader, final AccountInfo info) {
         accountInfo = info;
@@ -231,14 +269,15 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
             ProgressBar progress = (ProgressBar)findViewById(R.id.carddav_refreshing);
             progress.setVisibility(info.carddav.refreshing ? View.VISIBLE : View.GONE);
 
-            ListView list = (ListView)findViewById(R.id.address_books);
+            listCardDAV = (ListView)findViewById(R.id.address_books);
-            list.setEnabled(!info.carddav.refreshing);
+            listCardDAV.setEnabled(!info.carddav.refreshing);
-            list.setAlpha(info.carddav.refreshing ? 0.5f : 1);
+            listCardDAV.setAlpha(info.carddav.refreshing ? 0.5f : 1);
 
             AddressBookAdapter adapter = new AddressBookAdapter(this);
             adapter.addAll(info.carddav.collections);
-            list.setAdapter(adapter);
+            listCardDAV.setAdapter(adapter);
-            list.setOnItemClickListener(onItemClickListener);
+            listCardDAV.setOnItemClickListener(onItemClickListener);
+            listCardDAV.setOnItemLongClickListener(onItemLongClickListener);
         } else
             card.setVisibility(View.GONE);
 
@@ -247,14 +286,15 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
             ProgressBar progress = (ProgressBar)findViewById(R.id.caldav_refreshing);
             progress.setVisibility(info.caldav.refreshing ? View.VISIBLE : View.GONE);
 
-            final ListView list = (ListView)findViewById(R.id.calendars);
+            listCalDAV = (ListView)findViewById(R.id.calendars);
-            list.setEnabled(!info.caldav.refreshing);
+            listCalDAV.setEnabled(!info.caldav.refreshing);
-            list.setAlpha(info.caldav.refreshing ? 0.5f : 1);
+            listCalDAV.setAlpha(info.caldav.refreshing ? 0.5f : 1);
 
             final CalendarAdapter adapter = new CalendarAdapter(this);
             adapter.addAll(info.caldav.collections);
-            list.setAdapter(adapter);
+            listCalDAV.setAdapter(adapter);
-            list.setOnItemClickListener(onItemClickListener);
+            listCalDAV.setOnItemClickListener(onItemClickListener);
+            listCalDAV.setOnItemLongClickListener(onItemLongClickListener);
         } else
             card.setVisibility(View.GONE);
     }
@@ -263,6 +303,7 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
     public void onLoaderReset(Loader<AccountInfo> loader) {
     }
 
+
     private static class AccountLoader extends AsyncTaskLoader<AccountInfo> implements DavService.RefreshingStatusListener, ServiceConnection {
         private final String accountName;
         private final OpenHelper dbHelper;
@@ -289,6 +330,8 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
         public void onServiceConnected(ComponentName name, IBinder service) {
             davService = (DavService.InfoBinder)service;
             davService.addRefreshingStatusListener(this, false);
+
+            SQLiteDatabase db;
             forceLoad();
         }
 

app/src/main/java/at/bitfire/davdroid/ui/AccountListFragment.java

@@ -91,7 +91,7 @@ public class AccountListFragment extends ListFragment implements LoaderManager.L
 
 
     @RequiredArgsConstructor
-    public static class AccountInfo {
+    protected static class AccountInfo {
         final Account account;
         Long cardDavService, calDavService;
     }

app/src/main/java/at/bitfire/davdroid/ui/CreateAddressBookActivity.java

@@ -0,0 +1,240 @@
+/*
+ * Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ */
+
+package at.bitfire.davdroid.ui;
+
+import android.accounts.Account;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.database.DatabaseUtils;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.AsyncTaskLoader;
+import android.support.v4.content.Loader;
+import android.support.v7.app.AppCompatActivity;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.SimpleAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import org.xmlpull.v1.XmlSerializer;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+
+import at.bitfire.dav4android.DavResource;
+import at.bitfire.dav4android.XmlUtils;
+import at.bitfire.dav4android.exception.HttpException;
+import at.bitfire.davdroid.Constants;
+import at.bitfire.davdroid.HttpClient;
+import at.bitfire.davdroid.R;
+import at.bitfire.davdroid.model.CollectionInfo;
+import at.bitfire.davdroid.model.DavService;
+import at.bitfire.davdroid.model.HomeSet;
+import at.bitfire.davdroid.model.ServiceDB;
+import at.bitfire.davdroid.syncadapter.AccountSettings;
+import lombok.Cleanup;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+
+public class CreateAddressBookActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<CreateAddressBookActivity.AccountInfo> {
+    public final static String EXTRA_ACCOUNT = "account";
+
+    private Account account;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_create_address_book);
+
+        account = getIntent().getParcelableExtra(EXTRA_ACCOUNT);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        getSupportLoaderManager().initLoader(0, getIntent().getExtras(), this);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.activity_create_address_book, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                Intent intent = new Intent(this, AccountActivity.class);
+                intent.putExtra(AccountActivity.EXTRA_ACCOUNT_NAME, account.name);
+                startActivity(intent);
+                break;
+            case R.id.create_address_book:
+                createAddressBook();
+                break;
+            default:
+                return false;
+        }
+        return true;
+    }
+
+    protected void createAddressBook() {
+        Spinner spnrHomeSets = (Spinner)findViewById(R.id.homeset);
+        HashMap<String, String> homeSet = (HashMap<String, String>)spnrHomeSets.getSelectedItem();
+
+        HttpUrl urlHomeSet = HttpUrl.parse(homeSet.get(ServiceDB.HomeSets.URL));
+
+        CollectionInfo info = new CollectionInfo();
+        info.url = urlHomeSet.resolve("myAddrBook.vcf").toString();
+        info.displayName = "myAddrBook";
+
+    new AddressBookCreator().execute(   info);
+    }
+
+
+    // AsyncTask for creating the address book
+
+    class AddressBookCreator extends AsyncTask<CollectionInfo, Void, Exception> {
+        @Override
+        protected void onPostExecute(Exception e) {
+            String msg = (e == null) ? "Created!" : e.getLocalizedMessage();
+            Toast.makeText(CreateAddressBookActivity.this, msg, Toast.LENGTH_LONG).show();
+        }
+
+        @Override
+        protected Exception doInBackground(CollectionInfo[] infoArray) {
+            AccountSettings accountSettings = new AccountSettings(CreateAddressBookActivity.this, account);
+
+            CollectionInfo info = infoArray[0];
+            OkHttpClient client = HttpClient.create(CreateAddressBookActivity.this);
+            client = HttpClient.addAuthentication(client, accountSettings.username(), accountSettings.password(), accountSettings.preemptiveAuth());
+
+            DavResource addressBook = new DavResource(null, client, HttpUrl.parse(info.url));
+
+            StringWriter writer = new StringWriter();
+            try {
+                XmlSerializer serializer = XmlUtils.newSerializer();
+                serializer.setOutput(writer);
+                serializer.startDocument("UTF-8", null);
+                serializer.setPrefix("", XmlUtils.NS_WEBDAV);
+                serializer.setPrefix("CARD", XmlUtils.NS_CARDDAV);
+
+                serializer.startTag(XmlUtils.NS_WEBDAV, "mkcol");
+                    serializer.startTag(XmlUtils.NS_WEBDAV, "set");
+                        serializer.startTag(XmlUtils.NS_WEBDAV, "prop");
+                            serializer.startTag(XmlUtils.NS_WEBDAV, "resourcetype");
+                                serializer.startTag(XmlUtils.NS_WEBDAV, "collection");
+                                serializer.endTag(XmlUtils.NS_WEBDAV, "collection");
+                                serializer.startTag(XmlUtils.NS_CARDDAV, "addressbook");
+                                serializer.endTag(XmlUtils.NS_CARDDAV, "addressbook");
+                            serializer.endTag(XmlUtils.NS_WEBDAV, "resourcetype");
+                            serializer.startTag(XmlUtils.NS_WEBDAV, "displayname");
+                                serializer.text(info.displayName);
+                            serializer.endTag(XmlUtils.NS_WEBDAV, "displayname");
+                        serializer.endTag(XmlUtils.NS_WEBDAV, "prop");
+                    serializer.endTag(XmlUtils.NS_WEBDAV, "set");
+                serializer.endTag(XmlUtils.NS_WEBDAV, "mkcol");
+                serializer.endDocument();
+            } catch (IOException e) {
+                Constants.log.error("Couldn't assemble MKCOL request", e);
+            }
+
+            String error = null;
+            try {
+                addressBook.mkCol(writer.toString());
+            } catch (IOException|HttpException e) {
+                return e;
+            }
+            return null;
+        }
+    }
+
+
+    // loader
+
+    @Override
+    public Loader<AccountInfo> onCreateLoader(int id, Bundle args) {
+        return new AccountLoader(this, account);
+    }
+
+    @Override
+    public void onLoadFinished(Loader<AccountInfo> loader, AccountInfo data) {
+        Spinner spnrHomeSets = (Spinner)findViewById(R.id.homeset);
+
+        List<HashMap<String, String>> adapterData = new LinkedList<>();
+        for (HomeSet homeSet : data.homeSets) {
+            HashMap<String, String> map = new HashMap();
+            map.put(ServiceDB.HomeSets.ID, String.valueOf(homeSet.id));
+            map.put(ServiceDB.HomeSets.URL, homeSet.URL);
+            adapterData.add(map);
+        }
+
+        spnrHomeSets.setAdapter(new SimpleAdapter(this, adapterData, android.R.layout.simple_spinner_item, new String[] { ServiceDB.HomeSets.URL }, new int[] { android.R.id.text1 } ));
+    }
+
+    @Override
+    public void onLoaderReset(Loader<AccountInfo> loader) {
+    }
+
+    protected static class AccountInfo {
+        DavService service;
+        List<HomeSet> homeSets = new LinkedList<>();
+    }
+
+    private static class AccountLoader extends AsyncTaskLoader<AccountInfo> {
+        private final Account account;
+        ServiceDB.OpenHelper dbHelper;
+
+        public AccountLoader(Context context, Account account) {
+            super(context);
+            this.account = account;
+
+            dbHelper = new ServiceDB.OpenHelper(context);
+        }
+
+        @Override
+        protected void onStartLoading() {
+            forceLoad();
+        }
+
+        @Override
+        public AccountInfo loadInBackground() {
+            SQLiteDatabase db = dbHelper.getReadableDatabase();
+            try {
+                @Cleanup Cursor cursorService = db.query(ServiceDB.Services._TABLE, null, ServiceDB.Services.ACCOUNT_NAME + "=? AND " + ServiceDB.Services.SERVICE + "=?",
+                        new String[] { account.name, ServiceDB.Services.SERVICE_CARDDAV }, null, null, null);
+                if (!cursorService.moveToNext())
+                    return null;
+
+                AccountInfo info = new AccountInfo();
+
+                ContentValues values = new ContentValues();
+                DatabaseUtils.cursorRowToContentValues(cursorService, values);
+                info.service = DavService.fromDB(values);
+
+                @Cleanup Cursor cursorHomeSets = db.query(ServiceDB.HomeSets._TABLE, null, ServiceDB.HomeSets.SERVICE_ID + "=?",
+                        new String[] { String.valueOf(info.service.id) }, null, null, null);
+                while (cursorHomeSets.moveToNext()) {
+                    values.clear();
+                    DatabaseUtils.cursorRowToContentValues(cursorHomeSets, values);
+                    info.homeSets.add(HomeSet.fromDB(values));
+                }
+
+                return info;
+            } finally {
+                dbHelper.close();
+            }
+        }
+    }
+}

app/src/main/java/at/bitfire/davdroid/ui/DeleteCollectionFragment.java

@@ -0,0 +1,135 @@
+/*
+ * Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ */
+
+package at.bitfire.davdroid.ui;
+
+import android.accounts.Account;
+import android.app.Dialog;
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.AsyncTaskLoader;
+import android.support.v4.content.Loader;
+import android.widget.Toast;
+
+import java.io.IOException;
+
+import at.bitfire.dav4android.DavResource;
+import at.bitfire.dav4android.exception.HttpException;
+import at.bitfire.davdroid.Constants;
+import at.bitfire.davdroid.HttpClient;
+import at.bitfire.davdroid.model.CollectionInfo;
+import at.bitfire.davdroid.model.ServiceDB;
+import at.bitfire.davdroid.syncadapter.AccountSettings;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+
+public class DeleteCollectionFragment extends DialogFragment implements LoaderManager.LoaderCallbacks<Exception> {
+    protected static final String
+            ARG_ACCOUNT = "account",
+            ARG_COLLECTION_INFO = "collectionInfo";
+
+    public static DeleteCollectionFragment newInstance(Account account, CollectionInfo collectionInfo) {
+        DeleteCollectionFragment frag = new DeleteCollectionFragment();
+        Bundle args = new Bundle(2);
+        args.putParcelable(ARG_ACCOUNT, account);
+        args.putSerializable(ARG_COLLECTION_INFO, collectionInfo);
+        frag.setArguments(args);
+        return frag;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getLoaderManager().initLoader(0, getArguments(), this);
+    }
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        Dialog dialog = new ProgressDialog.Builder(getContext())
+                .setTitle("Deleting collection")
+                .setMessage("Deleting collection from server, please wait.")
+                .setCancelable(false)
+                .create();
+        dialog.setCanceledOnTouchOutside(false);
+        return dialog;
+    }
+
+
+    @Override
+    public Loader<Exception> onCreateLoader(int id, Bundle args) {
+        CollectionInfo collectionInfo = (CollectionInfo)args.getSerializable(ARG_COLLECTION_INFO);
+        return new DeleteCollectionLoader(
+                getContext(),
+                (Account)args.getParcelable(ARG_ACCOUNT),
+                collectionInfo.id,
+                HttpUrl.parse(collectionInfo.url)
+        );
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Exception> loader, Exception exception) {
+        String msg = (exception == null) ? "Collection deleted" : exception.getLocalizedMessage();
+        Toast.makeText(getContext(), msg, Toast.LENGTH_LONG).show();
+        dismissAllowingStateLoss();
+
+        AccountActivity activity = (AccountActivity)getActivity();
+        activity.reload();
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Exception> loader) {
+    }
+
+    private static class DeleteCollectionLoader extends AsyncTaskLoader<Exception> {
+        final Account account;
+        final long collectionId;
+        final HttpUrl url;
+        final ServiceDB.OpenHelper dbHelper;
+
+        public DeleteCollectionLoader(Context context, Account account, long collectionId, HttpUrl url) {
+            super(context);
+            this.account = account;
+            this.collectionId = collectionId;
+            this.url = url;
+
+            dbHelper = new ServiceDB.OpenHelper(context);
+        }
+
+        @Override
+        protected void onStartLoading() {
+            forceLoad();
+        }
+
+        @Override
+        public Exception loadInBackground() {
+            SQLiteDatabase db = dbHelper.getReadableDatabase();
+
+            OkHttpClient httpClient = HttpClient.create(getContext());
+            httpClient = HttpClient.addAuthentication(httpClient, new AccountSettings(getContext(), account));
+
+            DavResource collection = new DavResource(null, httpClient, url);
+            try {
+                collection.delete(null);
+
+                db.delete(ServiceDB.Collections._TABLE, ServiceDB.Collections.ID + "=?", new String[] { String.valueOf(collectionId) });
+
+                return null;
+            } catch (IOException|HttpException e) {
+                return e;
+            } finally {
+                db.close();
+            }
+        }
+    }
+}

app/src/main/java/at/bitfire/davdroid/ui/widget/MaximizedListView.java

@@ -14,9 +14,9 @@ import android.view.View;
 import android.widget.ListAdapter;
 import android.widget.ListView;
 
-public class NonScrollingListView extends ListView {
+public class MaximizedListView extends ListView {
 
-    public NonScrollingListView(Context context, AttributeSet attrs) {
+    public MaximizedListView(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 

app/src/main/res/layout/account_list_item.xml

@@ -32,6 +32,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:indeterminate="true"
+                    android:visibility="invisible"
                     style="@android:style/Widget.ProgressBar.Small"/>
 
                 <Space

app/src/main/res/layout/activity_account.xml

@@ -50,7 +50,7 @@
                     android:visibility="gone"
                     android:indeterminate="true"/>
 
-                <at.bitfire.davdroid.ui.widget.NonScrollingListView
+                <at.bitfire.davdroid.ui.widget.MaximizedListView
                     android:id="@+id/address_books"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
@@ -89,7 +89,7 @@
                     android:visibility="gone"
                     android:indeterminate="true"/>
 
-                <at.bitfire.davdroid.ui.widget.NonScrollingListView
+                <at.bitfire.davdroid.ui.widget.MaximizedListView
                     android:id="@+id/calendars"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"

app/src/main/res/layout/activity_create_address_book.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+  ~ All rights reserved. This program and the accompanying materials
+  ~ are made available under the terms of the GNU Public License v3.0
+  ~ which accompanies this distribution, and is available at
+  ~ http://www.gnu.org/licenses/gpl.html
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/homeset_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Home set:"/>
+    <Spinner
+        android:id="@+id/homeset"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+
+</LinearLayout>

app/src/main/res/menu/account_collection_operations.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+  ~ All rights reserved. This program and the accompanying materials
+  ~ are made available under the terms of the GNU Public License v3.0
+  ~ which accompanies this distribution, and is available at
+  ~ http://www.gnu.org/licenses/gpl.html
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:id="@+id/delete_collection"
+          android:title="Delete collection"/>
+
+</menu>

app/src/main/res/menu/activity_create_address_book.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright © 2013 – 2016 Ricki Hirner (bitfire web engineering).
+  ~ All rights reserved. This program and the accompanying materials
+  ~ are made available under the terms of the GNU Public License v3.0
+  ~ which accompanies this distribution, and is available at
+  ~ http://www.gnu.org/licenses/gpl.html
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item android:id="@+id/create_address_book"
+          app:showAsAction="always"
+          android:title="Create address book"/>
+
+</menu>

app/src/main/res/values/strings.xml

@@ -170,6 +170,9 @@
         <item>Once a day</item>
     </string-array>
 
+    <!-- CreateAddressBookActivity -->
+    <string name="create_address_book_title">Create address book</string>
+
     <string name="settings_android_update_title">Android version update</string>
     <string name="settings_android_update_description">Android version updates may have an impact on how DAVdroid works. If there are problems, please delete your DAVdroid accounts and add them again.</string>
     <string name="settings_version_update_title">Settings have been updated</string>

dav4android

@@ -1 +1 @@
-Subproject commit 519decc0aa66a5f7d828fd5741b5250649f9a85a
+Subproject commit 0e9522bb3a2d4e33bac214883f8316b91be0960e