Examples with Nullable android.annotation.Nullable used on opensource projects

Example 51 with Nullable

use of android.annotation.Nullable in project android_frameworks_base by DirtyUnicorns.

the class ShortcutService method loadUserLocked.

@Nullable
private ShortcutUser loadUserLocked(@UserIdInt int userId) {
    final File path = getUserFile(userId);
    if (DEBUG) {
        Slog.d(TAG, "Loading from " + path);
    }
    final AtomicFile file = new AtomicFile(path);
    final FileInputStream in;
    try {
        in = file.openRead();
    } catch (FileNotFoundException e) {
        if (DEBUG) {
            Slog.d(TAG, "Not found " + path);
        }
        return null;
    }
    try {
        final ShortcutUser ret = loadUserInternal(userId, in, /* forBackup= */
        false);
        return ret;
    } catch (IOException | XmlPullParserException | InvalidFileFormatException e) {
        Slog.e(TAG, "Failed to read file " + file.getBaseFile(), e);
        return null;
    } finally {
        IoUtils.closeQuietly(in);
    }
}

Example 52 with Nullable

use of android.annotation.Nullable in project android_frameworks_base by DirtyUnicorns.

the class ContentProviderClient method query.

/** See {@link ContentProvider#query ContentProvider.query} */
@Nullable
public Cursor query(@NonNull Uri url, @Nullable String[] projection, @Nullable String selection, @Nullable String[] selectionArgs, @Nullable String sortOrder, @Nullable CancellationSignal cancellationSignal) throws RemoteException {
    Preconditions.checkNotNull(url, "url");
    beforeRemote();
    try {
        ICancellationSignal remoteCancellationSignal = null;
        if (cancellationSignal != null) {
            cancellationSignal.throwIfCanceled();
            remoteCancellationSignal = mContentProvider.createCancellationSignal();
            cancellationSignal.setRemote(remoteCancellationSignal);
        }
        final Cursor cursor = mContentProvider.query(mPackageName, url, projection, selection, selectionArgs, sortOrder, remoteCancellationSignal);
        if (cursor == null) {
            return null;
        }
        if ("com.google.android.gms".equals(mPackageName)) {
            // They're casting to a concrete subclass, sigh
            return cursor;
        } else {
            return new CursorWrapperInner(cursor);
        }
    } catch (DeadObjectException e) {
        if (!mStable) {
            mContentResolver.unstableProviderDied(mContentProvider);
        }
        throw e;
    } finally {
        afterRemote();
    }
}

Example 53 with Nullable

use of android.annotation.Nullable in project android_frameworks_base by DirtyUnicorns.

the class ContentProviderClient method openAssetFile.

/**
     * See {@link ContentProvider#openAssetFile ContentProvider.openAssetFile}.
     * Note that this <em>does not</em>
     * take care of non-content: URIs such as file:.  It is strongly recommended
     * you use the {@link ContentResolver#openAssetFileDescriptor
     * ContentResolver.openAssetFileDescriptor} API instead.
     */
@Nullable
public AssetFileDescriptor openAssetFile(@NonNull Uri url, @NonNull String mode, @Nullable CancellationSignal signal) throws RemoteException, FileNotFoundException {
    Preconditions.checkNotNull(url, "url");
    Preconditions.checkNotNull(mode, "mode");
    beforeRemote();
    try {
        ICancellationSignal remoteSignal = null;
        if (signal != null) {
            signal.throwIfCanceled();
            remoteSignal = mContentProvider.createCancellationSignal();
            signal.setRemote(remoteSignal);
        }
        return mContentProvider.openAssetFile(mPackageName, url, mode, remoteSignal);
    } catch (DeadObjectException e) {
        if (!mStable) {
            mContentResolver.unstableProviderDied(mContentProvider);
        }
        throw e;
    } finally {
        afterRemote();
    }
}

Example 54 with Nullable

use of android.annotation.Nullable in project android_frameworks_base by DirtyUnicorns.

the class ContentProviderClient method openTypedAssetFileDescriptor.

/** See {@link ContentProvider#openTypedAssetFile ContentProvider.openTypedAssetFile} */
@Nullable
public final AssetFileDescriptor openTypedAssetFileDescriptor(@NonNull Uri uri, @NonNull String mimeType, @Nullable Bundle opts, @Nullable CancellationSignal signal) throws RemoteException, FileNotFoundException {
    Preconditions.checkNotNull(uri, "uri");
    Preconditions.checkNotNull(mimeType, "mimeType");
    beforeRemote();
    try {
        ICancellationSignal remoteSignal = null;
        if (signal != null) {
            signal.throwIfCanceled();
            remoteSignal = mContentProvider.createCancellationSignal();
            signal.setRemote(remoteSignal);
        }
        return mContentProvider.openTypedAssetFile(mPackageName, uri, mimeType, opts, remoteSignal);
    } catch (DeadObjectException e) {
        if (!mStable) {
            mContentResolver.unstableProviderDied(mContentProvider);
        }
        throw e;
    } finally {
        afterRemote();
    }
}

Example 55 with Nullable

use of android.annotation.Nullable in project android_frameworks_base by DirtyUnicorns.

the class ContentResolver method insert.

/**
     * Inserts a row into a table at the given URL.
     *
     * If the content provider supports transactions the insertion will be atomic.
     *
     * @param url The URL of the table to insert into.
     * @param values The initial values for the newly inserted row. The key is the column name for
     *               the field. Passing an empty ContentValues will create an empty row.
     * @return the URL of the newly created row.
     */
@Nullable
public final Uri insert(@RequiresPermission.Write @NonNull Uri url, @Nullable ContentValues values) {
    Preconditions.checkNotNull(url, "url");
    IContentProvider provider = acquireProvider(url);
    if (provider == null) {
        throw new IllegalArgumentException("Unknown URL " + url);
    }
    try {
        long startTime = SystemClock.uptimeMillis();
        Uri createdRow = provider.insert(mPackageName, url, values);
        long durationMillis = SystemClock.uptimeMillis() - startTime;
        maybeLogUpdateToEventLog(durationMillis, url, "insert", null);
        return createdRow;
    } catch (RemoteException e) {
        // Manager will kill this process shortly anyway.
        return null;
    } finally {
        releaseProvider(provider);
    }
}