/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.contacts.list; import com.android.contacts.ContactsActivity; import com.android.contacts.R; import com.android.contacts.model.AccountType; import com.android.contacts.model.AccountTypeManager; import com.android.contacts.model.AccountWithDataSet; import com.android.contacts.model.EntityDelta.ValuesDelta; import com.android.contacts.model.GoogleAccountType; import com.android.contacts.util.EmptyService; import com.android.contacts.util.LocalizedNameResolver; import com.android.contacts.util.WeakAsyncTask; import com.google.android.collect.Lists; import android.app.ActionBar; import android.app.Activity; import android.app.AlertDialog; import android.app.LoaderManager.LoaderCallbacks; import android.app.ProgressDialog; import android.content.AsyncTaskLoader; import android.content.ContentProviderOperation; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.DialogInterface; import android.content.EntityIterator; import android.content.Intent; import android.content.Loader; import android.content.OperationApplicationException; import android.content.SharedPreferences; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.os.RemoteException; import android.preference.PreferenceManager; import android.provider.ContactsContract; import android.provider.ContactsContract.Groups; import android.provider.ContactsContract.Settings; import android.util.Log; import android.view.ContextMenu; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.MenuItem.OnMenuItemClickListener; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.CheckBox; import android.widget.ExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.ExpandableListView.ExpandableListContextMenuInfo; import android.widget.TextView; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Iterator; /** * Shows a list of all available {@link Groups} available, letting the user * select which ones they want to be visible. */ public class CustomContactListFilterActivity extends ContactsActivity implements View.OnClickListener, ExpandableListView.OnChildClickListener, LoaderCallbacks<CustomContactListFilterActivity.AccountSet> { private static final String TAG = "CustomContactListFilterActivity"; private static final int ACCOUNT_SET_LOADER_ID = 1; private ExpandableListView mList; private DisplayAdapter mAdapter; private SharedPreferences mPrefs; @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.contact_list_filter_custom); mList = (ExpandableListView) findViewById(com.android.internal.R.id.list); mList.setOnChildClickListener(this); mList.setHeaderDividersEnabled(true); mPrefs = PreferenceManager.getDefaultSharedPreferences(this); mAdapter = new DisplayAdapter(this); final LayoutInflater inflater = getLayoutInflater(); findViewById(R.id.btn_done).setOnClickListener(this); findViewById(R.id.btn_discard).setOnClickListener(this); mList.setOnCreateContextMenuListener(this); mList.setAdapter(mAdapter); ActionBar actionBar = getActionBar(); if (actionBar != null) { // android.R.id.home will be triggered in onOptionsItemSelected() actionBar.setDisplayHomeAsUpEnabled(true); } } public static class CustomFilterConfigurationLoader extends AsyncTaskLoader<AccountSet> { private AccountSet mAccountSet; public CustomFilterConfigurationLoader(Context context) { super(context); } @Override public AccountSet loadInBackground() { Context context = getContext(); final AccountTypeManager accountTypes = AccountTypeManager.getInstance(context); final ContentResolver resolver = context.getContentResolver(); final AccountSet accounts = new AccountSet(); for (AccountWithDataSet account : accountTypes.getAccounts(false)) { final AccountType accountType = accountTypes.getAccountTypeForAccount(account); if (accountType.isExtension() && !account.hasData(context)) { // Extension with no data -- skip. continue; } AccountDisplay accountDisplay = new AccountDisplay(resolver, account.name, account.type, account.dataSet); final Uri.Builder groupsUri = Groups.CONTENT_URI.buildUpon() .appendQueryParameter(Groups.ACCOUNT_NAME, account.name) .appendQueryParameter(Groups.ACCOUNT_TYPE, account.type); if (account.dataSet != null) { groupsUri.appendQueryParameter(Groups.DATA_SET, account.dataSet).build(); } EntityIterator iterator = ContactsContract.Groups.newEntityIterator(resolver.query( groupsUri.build(), null, null, null, null)); try { boolean hasGroups = false; // Create entries for each known group while (iterator.hasNext()) { final ContentValues values = iterator.next().getEntityValues(); final GroupDelta group = GroupDelta.fromBefore(values); accountDisplay.addGroup(group); hasGroups = true; } // Create single entry handling ungrouped status accountDisplay.mUngrouped = GroupDelta.fromSettings(resolver, account.name, account.type, account.dataSet, hasGroups); accountDisplay.addGroup(accountDisplay.mUngrouped); } finally { iterator.close(); } accounts.add(accountDisplay); } return accounts; } @Override public void deliverResult(AccountSet cursor) { if (isReset()) { return; } mAccountSet = cursor; if (isStarted()) { super.deliverResult(cursor); } } @Override protected void onStartLoading() { if (mAccountSet != null) { deliverResult(mAccountSet); } if (takeContentChanged() || mAccountSet == null) { forceLoad(); } } @Override protected void onStopLoading() { cancelLoad(); } @Override protected void onReset() { super.onReset(); onStopLoading(); mAccountSet = null; } } @Override protected void onStart() { getLoaderManager().initLoader(ACCOUNT_SET_LOADER_ID, null, this); super.onStart(); } @Override public Loader<AccountSet> onCreateLoader(int id, Bundle args) { return new CustomFilterConfigurationLoader(this); } @Override public void onLoadFinished(Loader<AccountSet> loader, AccountSet data) { mAdapter.setAccounts(data); } @Override public void onLoaderReset(Loader<AccountSet> loader) { mAdapter.setAccounts(null); } private static final int DEFAULT_SHOULD_SYNC = 1; private static final int DEFAULT_VISIBLE = 0; /** * Entry holding any changes to {@link Groups} or {@link Settings} rows, * such as {@link Groups#SHOULD_SYNC} or {@link Groups#GROUP_VISIBLE}. */ protected static class GroupDelta extends ValuesDelta { private boolean mUngrouped = false; private boolean mAccountHasGroups; private GroupDelta() { super(); } /** * Build {@link GroupDelta} from the {@link Settings} row for the given * {@link Settings#ACCOUNT_NAME}, {@link Settings#ACCOUNT_TYPE}, and * {@link Settings#DATA_SET}. */ public static GroupDelta fromSettings(ContentResolver resolver, String accountName, String accountType, String dataSet, boolean accountHasGroups) { final Uri.Builder settingsUri = Settings.CONTENT_URI.buildUpon() .appendQueryParameter(Settings.ACCOUNT_NAME, accountName) .appendQueryParameter(Settings.ACCOUNT_TYPE, accountType); if (dataSet != null) { settingsUri.appendQueryParameter(Settings.DATA_SET, dataSet); } final Cursor cursor = resolver.query(settingsUri.build(), new String[] { Settings.SHOULD_SYNC, Settings.UNGROUPED_VISIBLE }, null, null, null); try { final ContentValues values = new ContentValues(); values.put(Settings.ACCOUNT_NAME, accountName); values.put(Settings.ACCOUNT_TYPE, accountType); values.put(Settings.DATA_SET, dataSet); if (cursor != null && cursor.moveToFirst()) { // Read existing values when present values.put(Settings.SHOULD_SYNC, cursor.getInt(0)); values.put(Settings.UNGROUPED_VISIBLE, cursor.getInt(1)); return fromBefore(values).setUngrouped(accountHasGroups); } else { // Nothing found, so treat as create values.put(Settings.SHOULD_SYNC, DEFAULT_SHOULD_SYNC); values.put(Settings.UNGROUPED_VISIBLE, DEFAULT_VISIBLE); return fromAfter(values).setUngrouped(accountHasGroups); } } finally { if (cursor != null) cursor.close(); } } public static GroupDelta fromBefore(ContentValues before) { final GroupDelta entry = new GroupDelta(); entry.mBefore = before; entry.mAfter = new ContentValues(); return entry; } public static GroupDelta fromAfter(ContentValues after) { final GroupDelta entry = new GroupDelta(); entry.mBefore = null; entry.mAfter = after; return entry; } protected GroupDelta setUngrouped(boolean accountHasGroups) { mUngrouped = true; mAccountHasGroups = accountHasGroups; return this; } @Override public boolean beforeExists() { return mBefore != null; } public boolean getShouldSync() { return getAsInteger(mUngrouped ? Settings.SHOULD_SYNC : Groups.SHOULD_SYNC, DEFAULT_SHOULD_SYNC) != 0; } public boolean getVisible() { return getAsInteger(mUngrouped ? Settings.UNGROUPED_VISIBLE : Groups.GROUP_VISIBLE, DEFAULT_VISIBLE) != 0; } public void putShouldSync(boolean shouldSync) { put(mUngrouped ? Settings.SHOULD_SYNC : Groups.SHOULD_SYNC, shouldSync ? 1 : 0); } public void putVisible(boolean visible) { put(mUngrouped ? Settings.UNGROUPED_VISIBLE : Groups.GROUP_VISIBLE, visible ? 1 : 0); } private String getAccountType() { return (mBefore == null ? mAfter : mBefore).getAsString(Settings.ACCOUNT_TYPE); } public CharSequence getTitle(Context context) { if (mUngrouped) { final String customAllContactsName = LocalizedNameResolver.getAllContactsName(context, getAccountType()); if (customAllContactsName != null) { return customAllContactsName; } if (mAccountHasGroups) { return context.getText(R.string.display_ungrouped); } else { return context.getText(R.string.display_all_contacts); } } else { final Integer titleRes = getAsInteger(Groups.TITLE_RES); if (titleRes != null) { final String packageName = getAsString(Groups.RES_PACKAGE); return context.getPackageManager().getText(packageName, titleRes, null); } else { return getAsString(Groups.TITLE); } } } /** * Build a possible {@link ContentProviderOperation} to persist any * changes to the {@link Groups} or {@link Settings} row described by * this {@link GroupDelta}. */ public ContentProviderOperation buildDiff() { if (isInsert()) { // Only allow inserts for Settings if (mUngrouped) { mAfter.remove(mIdColumn); return ContentProviderOperation.newInsert(Settings.CONTENT_URI) .withValues(mAfter) .build(); } else { throw new IllegalStateException("Unexpected diff"); } } else if (isUpdate()) { if (mUngrouped) { String accountName = this.getAsString(Settings.ACCOUNT_NAME); String accountType = this.getAsString(Settings.ACCOUNT_TYPE); String dataSet = this.getAsString(Settings.DATA_SET); StringBuilder selection = new StringBuilder(Settings.ACCOUNT_NAME + "=? AND " + Settings.ACCOUNT_TYPE + "=?"); String[] selectionArgs; if (dataSet == null) { selection.append(" AND " + Settings.DATA_SET + " IS NULL"); selectionArgs = new String[] {accountName, accountType}; } else { selection.append(" AND " + Settings.DATA_SET + "=?"); selectionArgs = new String[] {accountName, accountType, dataSet}; } return ContentProviderOperation.newUpdate(Settings.CONTENT_URI) .withSelection(selection.toString(), selectionArgs) .withValues(mAfter) .build(); } else { return ContentProviderOperation.newUpdate( addCallerIsSyncAdapterParameter(Groups.CONTENT_URI)) .withSelection(Groups._ID + "=" + this.getId(), null) .withValues(mAfter) .build(); } } else { return null; } } } private static Uri addCallerIsSyncAdapterParameter(Uri uri) { return uri.buildUpon() .appendQueryParameter(ContactsContract.CALLER_IS_SYNCADAPTER, "true") .build(); } /** * {@link Comparator} to sort by {@link Groups#_ID}. */ private static Comparator<GroupDelta> sIdComparator = new Comparator<GroupDelta>() { public int compare(GroupDelta object1, GroupDelta object2) { final Long id1 = object1.getId(); final Long id2 = object2.getId(); if (id1 == null && id2 == null) { return 0; } else if (id1 == null) { return -1; } else if (id2 == null) { return 1; } else if (id1 < id2) { return -1; } else if (id1 > id2) { return 1; } else { return 0; } } }; /** * Set of all {@link AccountDisplay} entries, one for each source. */ protected static class AccountSet extends ArrayList<AccountDisplay> { public ArrayList<ContentProviderOperation> buildDiff() { final ArrayList<ContentProviderOperation> diff = Lists.newArrayList(); for (AccountDisplay account : this) { account.buildDiff(diff); } return diff; } } /** * {@link GroupDelta} details for a single {@link AccountWithDataSet}, usually shown as * children under a single expandable group. */ protected static class AccountDisplay { public final String mName; public final String mType; public final String mDataSet; public GroupDelta mUngrouped; public ArrayList<GroupDelta> mSyncedGroups = Lists.newArrayList(); public ArrayList<GroupDelta> mUnsyncedGroups = Lists.newArrayList(); /** * Build an {@link AccountDisplay} covering all {@link Groups} under the * given {@link AccountWithDataSet}. */ public AccountDisplay(ContentResolver resolver, String accountName, String accountType, String dataSet) { mName = accountName; mType = accountType; mDataSet = dataSet; } /** * Add the given {@link GroupDelta} internally, filing based on its * {@link GroupDelta#getShouldSync()} status. */ private void addGroup(GroupDelta group) { if (group.getShouldSync()) { mSyncedGroups.add(group); } else { mUnsyncedGroups.add(group); } } /** * Set the {@link GroupDelta#putShouldSync(boolean)} value for all * children {@link GroupDelta} rows. */ public void setShouldSync(boolean shouldSync) { final Iterator<GroupDelta> oppositeChildren = shouldSync ? mUnsyncedGroups.iterator() : mSyncedGroups.iterator(); while (oppositeChildren.hasNext()) { final GroupDelta child = oppositeChildren.next(); setShouldSync(child, shouldSync, false); oppositeChildren.remove(); } } public void setShouldSync(GroupDelta child, boolean shouldSync) { setShouldSync(child, shouldSync, true); } /** * Set {@link GroupDelta#putShouldSync(boolean)}, and file internally * based on updated state. */ public void setShouldSync(GroupDelta child, boolean shouldSync, boolean attemptRemove) { child.putShouldSync(shouldSync); if (shouldSync) { if (attemptRemove) { mUnsyncedGroups.remove(child); } mSyncedGroups.add(child); Collections.sort(mSyncedGroups, sIdComparator); } else { if (attemptRemove) { mSyncedGroups.remove(child); } mUnsyncedGroups.add(child); } } /** * Build set of {@link ContentProviderOperation} to persist any user * changes to {@link GroupDelta} rows under this {@link AccountWithDataSet}. */ public void buildDiff(ArrayList<ContentProviderOperation> diff) { for (GroupDelta group : mSyncedGroups) { final ContentProviderOperation oper = group.buildDiff(); if (oper != null) diff.add(oper); } for (GroupDelta group : mUnsyncedGroups) { final ContentProviderOperation oper = group.buildDiff(); if (oper != null) diff.add(oper); } } } /** * {@link ExpandableListAdapter} that shows {@link GroupDelta} settings, * grouped by {@link AccountWithDataSet} type. Shows footer row when any groups are * unsynced, as determined through {@link AccountDisplay#mUnsyncedGroups}. */ protected static class DisplayAdapter extends BaseExpandableListAdapter { private Context mContext; private LayoutInflater mInflater; private AccountTypeManager mAccountTypes; private AccountSet mAccounts; private boolean mChildWithPhones = false; public DisplayAdapter(Context context) { mContext = context; mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mAccountTypes = AccountTypeManager.getInstance(context); } public void setAccounts(AccountSet accounts) { mAccounts = accounts; notifyDataSetChanged(); } /** * In group descriptions, show the number of contacts with phone * numbers, in addition to the total contacts. */ public void setChildDescripWithPhones(boolean withPhones) { mChildWithPhones = withPhones; } @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { if (convertView == null) { convertView = mInflater.inflate( R.layout.custom_contact_list_filter_account, parent, false); } final TextView text1 = (TextView)convertView.findViewById(android.R.id.text1); final TextView text2 = (TextView)convertView.findViewById(android.R.id.text2); final AccountDisplay account = (AccountDisplay)this.getGroup(groupPosition); final AccountType accountType = mAccountTypes.getAccountType( account.mType, account.mDataSet); text1.setText(account.mName); text1.setVisibility(account.mName == null ? View.GONE : View.VISIBLE); text2.setText(accountType.getDisplayLabel(mContext)); return convertView; } @Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { if (convertView == null) { convertView = mInflater.inflate( R.layout.custom_contact_list_filter_group, parent, false); } final TextView text1 = (TextView)convertView.findViewById(android.R.id.text1); final TextView text2 = (TextView)convertView.findViewById(android.R.id.text2); final CheckBox checkbox = (CheckBox)convertView.findViewById(android.R.id.checkbox); final AccountDisplay account = mAccounts.get(groupPosition); final GroupDelta child = (GroupDelta)this.getChild(groupPosition, childPosition); if (child != null) { // Handle normal group, with title and checkbox final boolean groupVisible = child.getVisible(); checkbox.setVisibility(View.VISIBLE); checkbox.setChecked(groupVisible); final CharSequence groupTitle = child.getTitle(mContext); text1.setText(groupTitle); text2.setVisibility(View.GONE); } else { // When unknown child, this is "more" footer view checkbox.setVisibility(View.GONE); text1.setText(R.string.display_more_groups); text2.setVisibility(View.GONE); } return convertView; } @Override public Object getChild(int groupPosition, int childPosition) { final AccountDisplay account = mAccounts.get(groupPosition); final boolean validChild = childPosition >= 0 && childPosition < account.mSyncedGroups.size(); if (validChild) { return account.mSyncedGroups.get(childPosition); } else { return null; } } @Override public long getChildId(int groupPosition, int childPosition) { final GroupDelta child = (GroupDelta)getChild(groupPosition, childPosition); if (child != null) { final Long childId = child.getId(); return childId != null ? childId : Long.MIN_VALUE; } else { return Long.MIN_VALUE; } } @Override public int getChildrenCount(int groupPosition) { // Count is any synced groups, plus possible footer final AccountDisplay account = mAccounts.get(groupPosition); final boolean anyHidden = account.mUnsyncedGroups.size() > 0; return account.mSyncedGroups.size() + (anyHidden ? 1 : 0); } @Override public Object getGroup(int groupPosition) { return mAccounts.get(groupPosition); } @Override public int getGroupCount() { if (mAccounts == null) { return 0; } return mAccounts.size(); } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public boolean hasStableIds() { return true; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } } /** {@inheritDoc} */ public void onClick(View view) { switch (view.getId()) { case R.id.btn_done: { this.doSaveAction(); break; } case R.id.btn_discard: { this.finish(); break; } } } /** * Handle any clicks on {@link ExpandableListAdapter} children, which * usually mean toggling its visible state. */ @Override public boolean onChildClick(ExpandableListView parent, View view, int groupPosition, int childPosition, long id) { final CheckBox checkbox = (CheckBox)view.findViewById(android.R.id.checkbox); final AccountDisplay account = (AccountDisplay)mAdapter.getGroup(groupPosition); final GroupDelta child = (GroupDelta)mAdapter.getChild(groupPosition, childPosition); if (child != null) { checkbox.toggle(); child.putVisible(checkbox.isChecked()); } else { // Open context menu for bringing back unsynced this.openContextMenu(view); } return true; } // TODO: move these definitions to framework constants when we begin // defining this mode through <sync-adapter> tags private static final int SYNC_MODE_UNSUPPORTED = 0; private static final int SYNC_MODE_UNGROUPED = 1; private static final int SYNC_MODE_EVERYTHING = 2; protected int getSyncMode(AccountDisplay account) { // TODO: read sync mode through <sync-adapter> definition if (GoogleAccountType.ACCOUNT_TYPE.equals(account.mType) && account.mDataSet == null) { return SYNC_MODE_EVERYTHING; } else { return SYNC_MODE_UNSUPPORTED; } } @Override public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, view, menuInfo); // Bail if not working with expandable long-press, or if not child if (!(menuInfo instanceof ExpandableListContextMenuInfo)) return; final ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) menuInfo; final int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition); final int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition); // Skip long-press on expandable parents if (childPosition == -1) return; final AccountDisplay account = (AccountDisplay)mAdapter.getGroup(groupPosition); final GroupDelta child = (GroupDelta)mAdapter.getChild(groupPosition, childPosition); // Ignore when selective syncing unsupported final int syncMode = getSyncMode(account); if (syncMode == SYNC_MODE_UNSUPPORTED) return; if (child != null) { showRemoveSync(menu, account, child, syncMode); } else { showAddSync(menu, account, syncMode); } } protected void showRemoveSync(ContextMenu menu, final AccountDisplay account, final GroupDelta child, final int syncMode) { final CharSequence title = child.getTitle(this); menu.setHeaderTitle(title); menu.add(R.string.menu_sync_remove).setOnMenuItemClickListener( new OnMenuItemClickListener() { public boolean onMenuItemClick(MenuItem item) { handleRemoveSync(account, child, syncMode, title); return true; } }); } protected void handleRemoveSync(final AccountDisplay account, final GroupDelta child, final int syncMode, CharSequence title) { final boolean shouldSyncUngrouped = account.mUngrouped.getShouldSync(); if (syncMode == SYNC_MODE_EVERYTHING && shouldSyncUngrouped && !child.equals(account.mUngrouped)) { // Warn before removing this group when it would cause ungrouped to stop syncing final AlertDialog.Builder builder = new AlertDialog.Builder(this); final CharSequence removeMessage = this.getString( R.string.display_warn_remove_ungrouped, title); builder.setTitle(R.string.menu_sync_remove); builder.setMessage(removeMessage); builder.setNegativeButton(android.R.string.cancel, null); builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // Mark both this group and ungrouped to stop syncing account.setShouldSync(account.mUngrouped, false); account.setShouldSync(child, false); mAdapter.notifyDataSetChanged(); } }); builder.show(); } else { // Mark this group to not sync account.setShouldSync(child, false); mAdapter.notifyDataSetChanged(); } } protected void showAddSync(ContextMenu menu, final AccountDisplay account, final int syncMode) { menu.setHeaderTitle(R.string.dialog_sync_add); // Create item for each available, unsynced group for (final GroupDelta child : account.mUnsyncedGroups) { if (!child.getShouldSync()) { final CharSequence title = child.getTitle(this); menu.add(title).setOnMenuItemClickListener(new OnMenuItemClickListener() { public boolean onMenuItemClick(MenuItem item) { // Adding specific group for syncing if (child.mUngrouped && syncMode == SYNC_MODE_EVERYTHING) { account.setShouldSync(true); } else { account.setShouldSync(child, true); } mAdapter.notifyDataSetChanged(); return true; } }); } } } @SuppressWarnings("unchecked") private void doSaveAction() { if (mAdapter == null || mAdapter.mAccounts == null) { finish(); return; } setResult(RESULT_OK); final ArrayList<ContentProviderOperation> diff = mAdapter.mAccounts.buildDiff(); if (diff.isEmpty()) { finish(); return; } new UpdateTask(this).execute(diff); } /** * Background task that persists changes to {@link Groups#GROUP_VISIBLE}, * showing spinner dialog to user while updating. */ public static class UpdateTask extends WeakAsyncTask<ArrayList<ContentProviderOperation>, Void, Void, Activity> { private ProgressDialog mProgress; public UpdateTask(Activity target) { super(target); } /** {@inheritDoc} */ @Override protected void onPreExecute(Activity target) { final Context context = target; mProgress = ProgressDialog.show( context, null, context.getText(R.string.savingDisplayGroups)); // Before starting this task, start an empty service to protect our // process from being reclaimed by the system. context.startService(new Intent(context, EmptyService.class)); } /** {@inheritDoc} */ @Override protected Void doInBackground( Activity target, ArrayList<ContentProviderOperation>... params) { final Context context = target; final ContentValues values = new ContentValues(); final ContentResolver resolver = context.getContentResolver(); try { final ArrayList<ContentProviderOperation> diff = params[0]; resolver.applyBatch(ContactsContract.AUTHORITY, diff); } catch (RemoteException e) { Log.e(TAG, "Problem saving display groups", e); } catch (OperationApplicationException e) { Log.e(TAG, "Problem saving display groups", e); } return null; } /** {@inheritDoc} */ @Override protected void onPostExecute(Activity target, Void result) { final Context context = target; try { mProgress.dismiss(); } catch (Exception e) { Log.e(TAG, "Error dismissing progress dialog", e); } target.finish(); // Stop the service that was protecting us context.stopService(new Intent(context, EmptyService.class)); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: // Pretend cancel. setResult(Activity.RESULT_CANCELED); finish(); return true; default: break; } return super.onOptionsItemSelected(item); } }