diff options
Diffstat (limited to 'src/com/android/launcher3/LauncherBackupHelper.java')
| -rw-r--r-- | src/com/android/launcher3/LauncherBackupHelper.java | 323 |
1 files changed, 235 insertions, 88 deletions
diff --git a/src/com/android/launcher3/LauncherBackupHelper.java b/src/com/android/launcher3/LauncherBackupHelper.java index 9b901eea1..62e6f3102 100644 --- a/src/com/android/launcher3/LauncherBackupHelper.java +++ b/src/com/android/launcher3/LauncherBackupHelper.java @@ -13,7 +13,6 @@ * See the License for the specific language governing permissions and * limitations under the License. */ - package com.android.launcher3; import com.google.protobuf.nano.InvalidProtocolBufferNanoException; @@ -31,14 +30,14 @@ import com.android.launcher3.backup.BackupProtos.Screen; import com.android.launcher3.backup.BackupProtos.Widget; import android.app.backup.BackupDataInputStream; -import android.app.backup.BackupHelper; -import android.app.backup.BackupDataInput; import android.app.backup.BackupDataOutput; +import android.app.backup.BackupHelper; import android.app.backup.BackupManager; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProviderInfo; import android.content.ComponentName; import android.content.ContentResolver; +import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.database.Cursor; @@ -68,7 +67,8 @@ import java.util.zip.CRC32; public class LauncherBackupHelper implements BackupHelper { private static final String TAG = "LauncherBackupHelper"; - private static final boolean DEBUG = false; + private static final boolean VERBOSE = LauncherBackupAgentHelper.VERBOSE; + private static final boolean DEBUG = LauncherBackupAgentHelper.DEBUG; private static final boolean DEBUG_PAYLOAD = false; private static final int MAX_JOURNAL_SIZE = 1000000; @@ -83,6 +83,8 @@ public class LauncherBackupHelper implements BackupHelper { public static final String LAUNCHER_PREFIX = "L"; + public static final String LAUNCHER_PREFS_PREFIX = "LP"; + private static final Bitmap.CompressFormat IMAGE_FORMAT = android.graphics.Bitmap.CompressFormat.PNG; @@ -134,14 +136,19 @@ public class LauncherBackupHelper implements BackupHelper { private static final int SCREEN_RANK_INDEX = 2; + private static IconCache mIconCache; + private final Context mContext; + private final boolean mRestoreEnabled; + private HashMap<ComponentName, AppWidgetProviderInfo> mWidgetMap; private ArrayList<Key> mKeys; - public LauncherBackupHelper(Context context) { + public LauncherBackupHelper(Context context, boolean restoreEnabled) { mContext = context; + mRestoreEnabled = restoreEnabled; } private void dataChanged() { @@ -166,7 +173,7 @@ public class LauncherBackupHelper implements BackupHelper { @Override public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState) { - Log.v(TAG, "onBackup"); + if (VERBOSE) Log.v(TAG, "onBackup"); Journal in = readJournal(oldState); Journal out = new Journal(); @@ -176,19 +183,23 @@ public class LauncherBackupHelper implements BackupHelper { out.rows = 0; out.bytes = 0; - Log.v(TAG, "lastBackupTime=" + lastBackupTime); + Log.v(TAG, "lastBackupTime = " + lastBackupTime); ArrayList<Key> keys = new ArrayList<Key>(); - try { - backupFavorites(in, data, out, keys); - backupScreens(in, data, out, keys); - backupIcons(in, data, out, keys); - backupWidgets(in, data, out, keys); - } catch (IOException e) { - Log.e(TAG, "launcher backup has failed", e); + if (launcherIsReady()) { + try { + backupFavorites(in, data, out, keys); + backupScreens(in, data, out, keys); + backupIcons(in, data, out, keys); + backupWidgets(in, data, out, keys); + } catch (IOException e) { + Log.e(TAG, "launcher backup has failed", e); + } + out.key = keys.toArray(new BackupProtos.Key[keys.size()]); + } else { + out = in; } - out.key = keys.toArray(BackupProtos.Key.EMPTY_ARRAY); writeJournal(newState, out); Log.v(TAG, "onBackup: wrote " + out.bytes + "b in " + out.rows + " rows."); } @@ -202,7 +213,7 @@ public class LauncherBackupHelper implements BackupHelper { */ @Override public void restoreEntity(BackupDataInputStream data) { - Log.v(TAG, "restoreEntity"); + if (VERBOSE) Log.v(TAG, "restoreEntity"); if (mKeys == null) { mKeys = new ArrayList<Key>(); } @@ -218,10 +229,11 @@ public class LauncherBackupHelper implements BackupHelper { bytesRead = data.read(buffer, 0, dataSize); if (DEBUG) Log.d(TAG, "read " + bytesRead + " of " + dataSize + " available"); } catch (IOException e) { - Log.d(TAG, "failed to read entity from restore data", e); + Log.e(TAG, "failed to read entity from restore data", e); } try { key = backupKeyToKey(backupKey); + mKeys.add(key); switch (key.type) { case Key.FAVORITE: restoreFavorite(key, buffer, dataSize, mKeys); @@ -260,7 +272,7 @@ public class LauncherBackupHelper implements BackupHelper { // will catch any changes the restore process might have made Journal out = new Journal(); out.t = 0; - out.key = mKeys.toArray(BackupProtos.Key.EMPTY_ARRAY); + out.key = mKeys.toArray(new BackupProtos.Key[mKeys.size()]); writeJournal(newState, out); Log.v(TAG, "onRestore: read " + mKeys.size() + " rows"); mKeys.clear(); @@ -295,10 +307,13 @@ public class LauncherBackupHelper implements BackupHelper { final long updateTime = cursor.getLong(ID_MODIFIED); Key key = getKey(Key.FAVORITE, id); keys.add(key); - currentIds.add(keyToBackupKey(key)); - if (updateTime > in.t) { + final String backupKey = keyToBackupKey(key); + currentIds.add(backupKey); + if (!savedIds.contains(backupKey) || updateTime >= in.t) { byte[] blob = packFavorite(cursor); writeRowToBackup(key, blob, out, data); + } else { + if (VERBOSE) Log.v(TAG, "favorite " + id + " was too old: " + updateTime); } } } finally { @@ -322,15 +337,21 @@ public class LauncherBackupHelper implements BackupHelper { * @param keys keys to mark as clean in the notes for next backup */ private void restoreFavorite(Key key, byte[] buffer, int dataSize, ArrayList<Key> keys) { - Log.v(TAG, "unpacking favorite " + key.id + " (" + dataSize + " bytes)"); + if (VERBOSE) Log.v(TAG, "unpacking favorite " + key.id); if (DEBUG) Log.d(TAG, "read (" + buffer.length + "): " + Base64.encodeToString(buffer, 0, dataSize, Base64.NO_WRAP)); + if (!mRestoreEnabled) { + if (VERBOSE) Log.v(TAG, "restore not enabled: skipping database mutation"); + return; + } + try { - Favorite favorite = unpackFavorite(buffer, 0, dataSize); - if (DEBUG) Log.d(TAG, "unpacked " + favorite.itemType); + ContentResolver cr = mContext.getContentResolver(); + ContentValues values = unpackFavorite(buffer, 0, dataSize); + cr.insert(Favorites.CONTENT_URI, values); } catch (InvalidProtocolBufferNanoException e) { - Log.w(TAG, "failed to decode proto", e); + Log.e(TAG, "failed to decode favorite", e); } } @@ -358,15 +379,19 @@ public class LauncherBackupHelper implements BackupHelper { Set<String> currentIds = new HashSet<String>(cursor.getCount()); try { cursor.moveToPosition(-1); + if (DEBUG) Log.d(TAG, "dumping screens after: " + in.t); while(cursor.moveToNext()) { final long id = cursor.getLong(ID_INDEX); final long updateTime = cursor.getLong(ID_MODIFIED); Key key = getKey(Key.SCREEN, id); keys.add(key); - currentIds.add(keyToBackupKey(key)); - if (updateTime > in.t) { + final String backupKey = keyToBackupKey(key); + currentIds.add(backupKey); + if (!savedIds.contains(backupKey) || updateTime >= in.t) { byte[] blob = packScreen(cursor); writeRowToBackup(key, blob, out, data); + } else { + if (VERBOSE) Log.v(TAG, "screen " + id + " was too old: " + updateTime); } } } finally { @@ -390,14 +415,22 @@ public class LauncherBackupHelper implements BackupHelper { * @param keys keys to mark as clean in the notes for next backup */ private void restoreScreen(Key key, byte[] buffer, int dataSize, ArrayList<Key> keys) { - Log.v(TAG, "unpacking screen " + key.id); + if (VERBOSE) Log.v(TAG, "unpacking screen " + key.id); if (DEBUG) Log.d(TAG, "read (" + buffer.length + "): " + Base64.encodeToString(buffer, 0, dataSize, Base64.NO_WRAP)); + + if (!mRestoreEnabled) { + if (VERBOSE) Log.v(TAG, "restore not enabled: skipping database mutation"); + return; + } + try { - Screen screen = unpackScreen(buffer, 0, dataSize); - if (DEBUG) Log.d(TAG, "unpacked " + screen.rank); + ContentResolver cr = mContext.getContentResolver(); + ContentValues values = unpackScreen(buffer, 0, dataSize); + cr.insert(WorkspaceScreens.CONTENT_URI, values); + } catch (InvalidProtocolBufferNanoException e) { - Log.w(TAG, "failed to decode proto", e); + Log.e(TAG, "failed to decode screen", e); } } @@ -414,14 +447,12 @@ public class LauncherBackupHelper implements BackupHelper { private void backupIcons(Journal in, BackupDataOutput data, Journal out, ArrayList<Key> keys) throws IOException { // persist icons that haven't been persisted yet - final LauncherAppState appState = LauncherAppState.getInstanceNoCreate(); - if (appState == null) { + if (!initializeIconCache()) { dataChanged(); // try again later if (DEBUG) Log.d(TAG, "Launcher is not initialized, delaying icon backup"); return; } final ContentResolver cr = mContext.getContentResolver(); - final IconCache iconCache = appState.getIconCache(); final int dpi = mContext.getResources().getDisplayMetrics().densityDpi; // read the old ID set @@ -452,30 +483,30 @@ public class LauncherBackupHelper implements BackupHelper { Log.w(TAG, "empty intent on application favorite: " + id); } if (savedIds.contains(backupKey)) { - if (DEBUG) Log.d(TAG, "already saved icon " + backupKey); + if (VERBOSE) Log.v(TAG, "already saved icon " + backupKey); // remember that we already backed this up previously keys.add(key); } else if (backupKey != null) { if (DEBUG) Log.d(TAG, "I can count this high: " + out.rows); if ((out.rows - startRows) < MAX_ICONS_PER_PASS) { - if (DEBUG) Log.d(TAG, "saving icon " + backupKey); - Bitmap icon = iconCache.getIcon(intent); + if (VERBOSE) Log.v(TAG, "saving icon " + backupKey); + Bitmap icon = mIconCache.getIcon(intent); keys.add(key); - if (icon != null && !iconCache.isDefaultIcon(icon)) { + if (icon != null && !mIconCache.isDefaultIcon(icon)) { byte[] blob = packIcon(dpi, icon); writeRowToBackup(key, blob, out, data); } } else { - if (DEBUG) Log.d(TAG, "scheduling another run for icon " + backupKey); + if (VERBOSE) Log.d(TAG, "deferring icon backup " + backupKey); // too many icons for this pass, request another. dataChanged(); } } } catch (URISyntaxException e) { - Log.w(TAG, "invalid URI on application favorite: " + id); + Log.e(TAG, "invalid URI on application favorite: " + id); } catch (IOException e) { - Log.w(TAG, "unable to save application icon for favorite: " + id); + Log.e(TAG, "unable to save application icon for favorite: " + id); } } @@ -500,21 +531,36 @@ public class LauncherBackupHelper implements BackupHelper { * @param keys keys to mark as clean in the notes for next backup */ private void restoreIcon(Key key, byte[] buffer, int dataSize, ArrayList<Key> keys) { - Log.v(TAG, "unpacking icon " + key.id); + if (VERBOSE) Log.v(TAG, "unpacking icon " + key.id); if (DEBUG) Log.d(TAG, "read (" + buffer.length + "): " + Base64.encodeToString(buffer, 0, dataSize, Base64.NO_WRAP)); + try { Resource res = unpackIcon(buffer, 0, dataSize); - if (DEBUG) Log.d(TAG, "unpacked " + res.dpi); - if (DEBUG) Log.d(TAG, "read " + - Base64.encodeToString(res.data, 0, res.data.length, - Base64.NO_WRAP)); + if (DEBUG) { + Log.d(TAG, "unpacked " + res.dpi + " dpi icon"); + } + if (DEBUG_PAYLOAD) { + Log.d(TAG, "read " + + Base64.encodeToString(res.data, 0, res.data.length, + Base64.NO_WRAP)); + } Bitmap icon = BitmapFactory.decodeByteArray(res.data, 0, res.data.length); if (icon == null) { Log.w(TAG, "failed to unpack icon for " + key.name); } - } catch (InvalidProtocolBufferNanoException e) { - Log.w(TAG, "failed to decode proto", e); + + if (!mRestoreEnabled) { + if (VERBOSE) { + Log.v(TAG, "restore not enabled: skipping database mutation"); + } + return; + } else { + IconCache.preloadIcon(mContext, ComponentName.unflattenFromString(key.name), + icon, res.dpi); + } + } catch (IOException e) { + Log.d(TAG, "failed to save restored icon for: " + key.name, e); } } @@ -532,15 +578,13 @@ public class LauncherBackupHelper implements BackupHelper { ArrayList<Key> keys) throws IOException { // persist static widget info that hasn't been persisted yet final LauncherAppState appState = LauncherAppState.getInstanceNoCreate(); - if (appState == null) { - dataChanged(); // try again later - if (DEBUG) Log.d(TAG, "Launcher is not initialized, delaying widget backup"); + if (appState == null || !initializeIconCache()) { + Log.w(TAG, "Failed to get icon cache during restore"); return; } final ContentResolver cr = mContext.getContentResolver(); final WidgetPreviewLoader previewLoader = new WidgetPreviewLoader(mContext); final PagedViewCellLayout widgetSpacingLayout = new PagedViewCellLayout(mContext); - final IconCache iconCache = appState.getIconCache(); final int dpi = mContext.getResources().getDisplayMetrics().densityDpi; final DeviceProfile profile = appState.getDynamicGrid().getDeviceProfile(); if (DEBUG) Log.d(TAG, "cellWidthPx: " + profile.cellWidthPx); @@ -573,22 +617,22 @@ public class LauncherBackupHelper implements BackupHelper { Log.w(TAG, "empty intent on appwidget: " + id); } if (savedIds.contains(backupKey)) { - if (DEBUG) Log.d(TAG, "already saved widget " + backupKey); + if (VERBOSE) Log.v(TAG, "already saved widget " + backupKey); // remember that we already backed this up previously keys.add(key); } else if (backupKey != null) { if (DEBUG) Log.d(TAG, "I can count this high: " + out.rows); if ((out.rows - startRows) < MAX_WIDGETS_PER_PASS) { - if (DEBUG) Log.d(TAG, "saving widget " + backupKey); + if (VERBOSE) Log.v(TAG, "saving widget " + backupKey); previewLoader.setPreviewSize(spanX * profile.cellWidthPx, spanY * profile.cellHeightPx, widgetSpacingLayout); - byte[] blob = packWidget(dpi, previewLoader, iconCache, provider); + byte[] blob = packWidget(dpi, previewLoader, mIconCache, provider); keys.add(key); writeRowToBackup(key, blob, out, data); } else { - if (DEBUG) Log.d(TAG, "scheduling another run for widget " + backupKey); + if (VERBOSE) Log.d(TAG, "deferring widget backup " + backupKey); // too many widgets for this pass, request another. dataChanged(); } @@ -615,7 +659,7 @@ public class LauncherBackupHelper implements BackupHelper { * @param keys keys to mark as clean in the notes for next backup */ private void restoreWidget(Key key, byte[] buffer, int dataSize, ArrayList<Key> keys) { - Log.v(TAG, "unpacking widget " + key.id); + if (VERBOSE) Log.v(TAG, "unpacking widget " + key.id); if (DEBUG) Log.d(TAG, "read (" + buffer.length + "): " + Base64.encodeToString(buffer, 0, dataSize, Base64.NO_WRAP)); try { @@ -628,8 +672,15 @@ public class LauncherBackupHelper implements BackupHelper { Log.w(TAG, "failed to unpack widget icon for " + key.name); } } + + if (!mRestoreEnabled) { + if (VERBOSE) Log.v(TAG, "restore not enabled: skipping database mutation"); + return; + } else { + // future site of widget table mutation + } } catch (InvalidProtocolBufferNanoException e) { - Log.w(TAG, "failed to decode proto", e); + Log.e(TAG, "failed to decode widget", e); } } @@ -764,11 +815,48 @@ public class LauncherBackupHelper implements BackupHelper { } /** Deserialize a Favorite from persistence, after verifying checksum wrapper. */ - private Favorite unpackFavorite(byte[] buffer, int offset, int dataSize) + private ContentValues unpackFavorite(byte[] buffer, int offset, int dataSize) throws InvalidProtocolBufferNanoException { Favorite favorite = new Favorite(); MessageNano.mergeFrom(favorite, readCheckedBytes(buffer, offset, dataSize)); - return favorite; + if (VERBOSE) Log.v(TAG, "unpacked favorite " + favorite.itemType + ", " + + (TextUtils.isEmpty(favorite.title) ? favorite.id : favorite.title)); + ContentValues values = new ContentValues(); + values.put(Favorites._ID, favorite.id); + values.put(Favorites.SCREEN, favorite.screen); + values.put(Favorites.CONTAINER, favorite.container); + values.put(Favorites.CELLX, favorite.cellX); + values.put(Favorites.CELLY, favorite.cellY); + values.put(Favorites.SPANX, favorite.spanX); + values.put(Favorites.SPANY, favorite.spanY); + values.put(Favorites.ICON_TYPE, favorite.iconType); + if (favorite.iconType == Favorites.ICON_TYPE_RESOURCE) { + values.put(Favorites.ICON_PACKAGE, favorite.iconPackage); + values.put(Favorites.ICON_RESOURCE, favorite.iconResource); + } + if (favorite.iconType == Favorites.ICON_TYPE_BITMAP) { + values.put(Favorites.ICON, favorite.icon); + } + if (!TextUtils.isEmpty(favorite.title)) { + values.put(Favorites.TITLE, favorite.title); + } else { + values.put(Favorites.TITLE, ""); + } + if (!TextUtils.isEmpty(favorite.intent)) { + values.put(Favorites.INTENT, favorite.intent); + } + values.put(Favorites.ITEM_TYPE, favorite.itemType); + if (favorite.itemType == Favorites.ITEM_TYPE_APPWIDGET) { + if (!TextUtils.isEmpty(favorite.appWidgetProvider)) { + values.put(Favorites.APPWIDGET_PROVIDER, favorite.appWidgetProvider); + } + values.put(Favorites.APPWIDGET_ID, favorite.appWidgetId); + } + + // Let LauncherModel know we've been here. + values.put(LauncherSettings.Favorites.RESTORED, 1); + + return values; } /** Serialize a Screen for persistence, including a checksum wrapper. */ @@ -781,11 +869,15 @@ public class LauncherBackupHelper implements BackupHelper { } /** Deserialize a Screen from persistence, after verifying checksum wrapper. */ - private Screen unpackScreen(byte[] buffer, int offset, int dataSize) + private ContentValues unpackScreen(byte[] buffer, int offset, int dataSize) throws InvalidProtocolBufferNanoException { Screen screen = new Screen(); MessageNano.mergeFrom(screen, readCheckedBytes(buffer, offset, dataSize)); - return screen; + if (VERBOSE) Log.v(TAG, "unpacked screen " + screen.id + "/" + screen.rank); + ContentValues values = new ContentValues(); + values.put(WorkspaceScreens._ID, screen.id); + values.put(WorkspaceScreens.SCREEN_RANK, screen.rank); + return values; } /** Serialize an icon Resource for persistence, including a checksum wrapper. */ @@ -800,10 +892,11 @@ public class LauncherBackupHelper implements BackupHelper { } /** Deserialize an icon resource from persistence, after verifying checksum wrapper. */ - private Resource unpackIcon(byte[] buffer, int offset, int dataSize) + private static Resource unpackIcon(byte[] buffer, int offset, int dataSize) throws InvalidProtocolBufferNanoException { Resource res = new Resource(); MessageNano.mergeFrom(res, readCheckedBytes(buffer, offset, dataSize)); + if (VERBOSE) Log.v(TAG, "unpacked icon " + res.dpi + "/" + res.data.length); return res; } @@ -842,6 +935,7 @@ public class LauncherBackupHelper implements BackupHelper { throws InvalidProtocolBufferNanoException { Widget widget = new Widget(); MessageNano.mergeFrom(widget, readCheckedBytes(buffer, offset, dataSize)); + if (VERBOSE) Log.v(TAG, "unpacked widget " + widget.provider); return widget; } @@ -852,7 +946,7 @@ public class LauncherBackupHelper implements BackupHelper { * in that case, do a full backup. * * @param oldState the read-0only file descriptor pointing to the old journal - * @return a Journal protocol bugffer + * @return a Journal protocol buffer */ private Journal readJournal(ParcelFileDescriptor oldState) { Journal journal = new Journal(); @@ -861,47 +955,61 @@ public class LauncherBackupHelper implements BackupHelper { } FileInputStream inStream = new FileInputStream(oldState.getFileDescriptor()); try { - int remaining = inStream.available(); - if (DEBUG) Log.d(TAG, "available " + remaining); - if (remaining < MAX_JOURNAL_SIZE) { - byte[] buffer = new byte[remaining]; + int availableBytes = inStream.available(); + if (DEBUG) Log.d(TAG, "available " + availableBytes); + if (availableBytes < MAX_JOURNAL_SIZE) { + byte[] buffer = new byte[availableBytes]; int bytesRead = 0; - while (remaining > 0) { + boolean valid = false; + InvalidProtocolBufferNanoException lastProtoException = null; + while (availableBytes > 0) { try { - int result = inStream.read(buffer, bytesRead, remaining); + // OMG what are you doing? This is crazy inefficient! + // If we read a byte that is not ours, we will cause trouble: b/12491813 + // However, we don't know how many bytes to expect (oops). + // So we have to step through *slowly*, watching for the end. + int result = inStream.read(buffer, bytesRead, 1); if (result > 0) { - if (DEBUG) Log.d(TAG, "read some bytes: " + result); - remaining -= result; + availableBytes -= result; bytesRead += result; + if (DEBUG && (bytesRead % 100 == 0)) { + Log.d(TAG, "read some bytes: " + bytesRead); + } } else { - // stop reading ands see what there is to parse - Log.w(TAG, "read error: " + result); - remaining = 0; + Log.w(TAG, "unexpected end of file while reading journal."); + // stop reading and see what there is to parse + availableBytes = 0; } } catch (IOException e) { - Log.w(TAG, "failed to read the journal", e); buffer = null; - remaining = 0; + availableBytes = 0; } - } - if (DEBUG) Log.d(TAG, "journal bytes read: " + bytesRead); - if (buffer != null) { + // check the buffer to see if we have a valid journal try { MessageNano.mergeFrom(journal, readCheckedBytes(buffer, 0, bytesRead)); + // if we are here, then we have read a valid, checksum-verified journal + valid = true; + availableBytes = 0; + if (VERBOSE) Log.v(TAG, "read " + bytesRead + " bytes of journal"); } catch (InvalidProtocolBufferNanoException e) { - Log.d(TAG, "failed to read the journal", e); + // if we don't have the whole journal yet, mergeFrom will throw. keep going. + lastProtoException = e; journal.clear(); } } + if (DEBUG) Log.d(TAG, "journal bytes read: " + bytesRead); + if (!valid) { + Log.w(TAG, "could not find a valid journal", lastProtoException); + } } } catch (IOException e) { - Log.d(TAG, "failed to close the journal", e); + Log.w(TAG, "failed to close the journal", e); } finally { try { inStream.close(); } catch (IOException e) { - Log.d(TAG, "failed to close the journal", e); + Log.w(TAG, "failed to close the journal", e); } } return journal; @@ -914,7 +1022,7 @@ public class LauncherBackupHelper implements BackupHelper { data.writeEntityData(blob, blob.length); out.rows++; out.bytes += blob.length; - Log.v(TAG, "saving " + geKeyType(key) + " " + backupKey + ": " + + if (VERBOSE) Log.v(TAG, "saving " + geKeyType(key) + " " + backupKey + ": " + getKeyName(key) + "/" + blob.length); if(DEBUG_PAYLOAD) { String encoded = Base64.encodeToString(blob, 0, blob.length, Base64.NO_WRAP); @@ -922,7 +1030,7 @@ public class LauncherBackupHelper implements BackupHelper { for (int offset = 0; offset < encoded.length(); offset += chunkSize) { int end = offset + chunkSize; end = Math.min(end, encoded.length()); - Log.d(TAG, "wrote " + encoded.substring(offset, end)); + Log.w(TAG, "wrote " + encoded.substring(offset, end)); } } } @@ -942,7 +1050,7 @@ public class LauncherBackupHelper implements BackupHelper { throws IOException { int rows = 0; for(String deleted: deletedIds) { - Log.v(TAG, "dropping icon " + deleted); + if (VERBOSE) Log.v(TAG, "dropping deleted item " + deleted); data.writeEntityHeader(deleted, -1); rows++; } @@ -962,10 +1070,12 @@ public class LauncherBackupHelper implements BackupHelper { FileOutputStream outStream = null; try { outStream = new FileOutputStream(newState.getFileDescriptor()); - outStream.write(writeCheckedBytes(journal)); + final byte[] journalBytes = writeCheckedBytes(journal); + outStream.write(journalBytes); outStream.close(); + if (VERBOSE) Log.v(TAG, "wrote " + journalBytes.length + " bytes of journal"); } catch (IOException e) { - Log.d(TAG, "failed to write backup journal", e); + Log.w(TAG, "failed to write backup journal", e); } } @@ -980,7 +1090,7 @@ public class LauncherBackupHelper implements BackupHelper { } /** Unwrap a proto message from a CheckedMessage, verifying the checksum. */ - private byte[] readCheckedBytes(byte[] buffer, int offset, int dataSize) + private static byte[] readCheckedBytes(byte[] buffer, int offset, int dataSize) throws InvalidProtocolBufferNanoException { CheckedMessage wrapper = new CheckedMessage(); MessageNano.mergeFrom(wrapper, buffer, offset, dataSize); @@ -1004,6 +1114,43 @@ public class LauncherBackupHelper implements BackupHelper { return mWidgetMap.get(component); } + + private boolean initializeIconCache() { + if (mIconCache != null) { + return true; + } + + final LauncherAppState appState = LauncherAppState.getInstanceNoCreate(); + if (appState == null) { + Throwable stackTrace = new Throwable(); + stackTrace.fillInStackTrace(); + Log.w(TAG, "Failed to get app state during backup/restore", stackTrace); + return false; + } + mIconCache = appState.getIconCache(); + return mIconCache != null; + } + + + // check if the launcher is in a state to support backup + private boolean launcherIsReady() { + ContentResolver cr = mContext.getContentResolver(); + Cursor cursor = cr.query(Favorites.CONTENT_URI, FAVORITE_PROJECTION, null, null, null); + if (cursor == null) { + // launcher data has been wiped, do nothing + return false; + } + cursor.close(); + + if (!initializeIconCache()) { + // launcher services are unavailable, try again later + dataChanged(); + return false; + } + + return true; + } + private class KeyParsingException extends Throwable { private KeyParsingException(Throwable cause) { super(cause); 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