157 lines
5.1 KiB
Java
157 lines
5.1 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.email.activity;
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import com.android.emailcommon.Logging;
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import com.android.emailcommon.utility.Utility;
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import android.content.AsyncTaskLoader;
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import android.content.ContentUris;
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import android.content.Context;
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import android.database.Cursor;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.net.Uri;
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import android.provider.ContactsContract.CommonDataKinds.Email;
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import android.provider.ContactsContract.CommonDataKinds.Photo;
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import android.provider.ContactsContract.Contacts;
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import android.provider.ContactsContract.Data;
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import android.provider.ContactsContract.StatusUpdates;
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import android.util.Log;
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/**
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* Loader to load presence statuses and the contact photo.
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*/
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public class ContactStatusLoader extends AsyncTaskLoader<ContactStatusLoader.Result> {
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public static final int PRESENCE_UNKNOWN_RESOURCE_ID = android.R.drawable.presence_offline;
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/** email address -> photo id, presence */
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/* package */ static final String[] PROJECTION_PHOTO_ID_PRESENCE = new String[] {
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Contacts.PHOTO_ID,
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Contacts.CONTACT_PRESENCE
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};
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private static final int COLUMN_PHOTO_ID = 0;
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private static final int COLUMN_PRESENCE = 1;
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/** photo id -> photo data */
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/* package */ static final String[] PHOTO_PROJECTION = new String[] {
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Photo.PHOTO
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};
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private static final int PHOTO_COLUMN = 0;
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private final Context mContext;
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private final String mEmailAddress;
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/**
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* Class that encapsulates the result.
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*/
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public static class Result {
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public static final Result UNKNOWN = new Result(null, PRESENCE_UNKNOWN_RESOURCE_ID, null);
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/** Contact photo. Null if unknown */
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public final Bitmap mPhoto;
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/** Presence image resource ID. Always has a valid value, even if unknown. */
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public final int mPresenceResId;
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/** URI for opening quick contact. Null if unknown. */
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public final Uri mLookupUri;
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public Result(Bitmap photo, int presenceResId, Uri lookupUri) {
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mPhoto = photo;
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mPresenceResId = presenceResId;
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mLookupUri = lookupUri;
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}
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}
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public ContactStatusLoader(Context context, String emailAddress) {
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super(context);
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mContext = context;
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mEmailAddress = emailAddress;
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}
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@Override
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public Result loadInBackground() {
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return getContactInfo(mContext, mEmailAddress);
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}
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/**
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* Synchronously loads contact data.
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*
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* NOTE: DO NOT CALL THIS METHOD FROM THE UI THREAD (DATABASE ACCESS)
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*/
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public static Result getContactInfo(Context context, String emailAddress) {
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// Load photo-id and presence status.
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Uri uri = Uri.withAppendedPath(Email.CONTENT_LOOKUP_URI, Uri.encode(emailAddress));
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Cursor c = context.getContentResolver().query(
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uri,
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PROJECTION_PHOTO_ID_PRESENCE, null, null, null);
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if (c == null) {
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return Result.UNKNOWN;
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}
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final long photoId;
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final int presenceStatus;
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try {
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if (!c.moveToFirst()) {
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return Result.UNKNOWN;
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}
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photoId = c.getLong(COLUMN_PHOTO_ID);
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presenceStatus = c.getInt(COLUMN_PRESENCE);
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} finally {
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c.close();
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}
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// Convert presence status into the res id.
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final int presenceStatusResId = StatusUpdates.getPresenceIconResourceId(presenceStatus);
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// load photo from photo-id.
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Bitmap photo = null;
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if (photoId != -1) {
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final byte[] photoData = Utility.getFirstRowBlob(context,
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ContentUris.withAppendedId(Data.CONTENT_URI, photoId), PHOTO_PROJECTION,
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null, null, null, PHOTO_COLUMN, null);
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if (photoData != null) {
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try {
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photo = BitmapFactory.decodeByteArray(photoData, 0, photoData.length, null);
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} catch (OutOfMemoryError e) {
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Log.d(Logging.LOG_TAG, "Decoding bitmap failed with " + e.getMessage());
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}
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}
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}
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// Get lookup URI
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final Uri lookupUri = Data.getContactLookupUri(context.getContentResolver(), uri);
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return new Result(photo, presenceStatusResId, lookupUri);
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}
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@Override
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protected void onStartLoading() {
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cancelLoad();
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forceLoad();
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}
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@Override
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protected void onStopLoading() {
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cancelLoad();
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}
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@Override
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protected void onReset() {
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stopLoading();
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}
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}
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