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

Example 11 with Nullable

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

the class ShortcutParser method parseShortcuts.

@Nullable
public static List<ShortcutInfo> parseShortcuts(ShortcutService service, String packageName, @UserIdInt int userId) throws IOException, XmlPullParserException {
    if (ShortcutService.DEBUG) {
        Slog.d(TAG, String.format("Scanning package %s for manifest shortcuts on user %d", packageName, userId));
    }
    final List<ResolveInfo> activities = service.injectGetMainActivities(packageName, userId);
    if (activities == null || activities.size() == 0) {
        return null;
    }
    List<ShortcutInfo> result = null;
    try {
        final int size = activities.size();
        for (int i = 0; i < size; i++) {
            final ActivityInfo activityInfoNoMetadata = activities.get(i).activityInfo;
            if (activityInfoNoMetadata == null) {
                continue;
            }
            final ActivityInfo activityInfoWithMetadata = service.getActivityInfoWithMetadata(activityInfoNoMetadata.getComponentName(), userId);
            if (activityInfoWithMetadata != null) {
                result = parseShortcutsOneFile(service, activityInfoWithMetadata, packageName, userId, result);
            }
        }
    } catch (RuntimeException e) {
        // Resource ID mismatch may cause various runtime exceptions when parsing XMLs,
        // But we don't crash the device, so just swallow them.
        service.wtf("Exception caught while parsing shortcut XML for package=" + packageName, e);
        return null;
    }
    return result;
}

Example 12 with Nullable

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

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 13 with Nullable

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

the class MediaExtractor method getPsshInfo.

/**
     * Get the PSSH info if present.
     * @return a map of uuid-to-bytes, with the uuid specifying
     * the crypto scheme, and the bytes being the data specific to that scheme.
     * This can be {@code null} if the source does not contain PSSH info.
     */
@Nullable
public Map<UUID, byte[]> getPsshInfo() {
    Map<UUID, byte[]> psshMap = null;
    Map<String, Object> formatMap = getFileFormatNative();
    if (formatMap != null && formatMap.containsKey("pssh")) {
        ByteBuffer rawpssh = (ByteBuffer) formatMap.get("pssh");
        rawpssh.order(ByteOrder.nativeOrder());
        rawpssh.rewind();
        formatMap.remove("pssh");
        // parse the flat pssh bytebuffer into something more manageable
        psshMap = new HashMap<UUID, byte[]>();
        while (rawpssh.remaining() > 0) {
            rawpssh.order(ByteOrder.BIG_ENDIAN);
            long msb = rawpssh.getLong();
            long lsb = rawpssh.getLong();
            UUID uuid = new UUID(msb, lsb);
            rawpssh.order(ByteOrder.nativeOrder());
            int datalen = rawpssh.getInt();
            byte[] psshdata = new byte[datalen];
            rawpssh.get(psshdata);
            psshMap.put(uuid, psshdata);
        }
    }
    return psshMap;
}

Example 14 with Nullable

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

the class CustomPrinterIconCache method getIcon.

/**
     * Get the {@link Icon} to be used as a custom icon for the printer. If not available request
     * the icon to be loaded.
     *
     * @param printerId the printer the icon belongs to
     * @return the {@link Icon} if already available or null if icon is not loaded yet
     */
@Nullable
public synchronized Icon getIcon(@NonNull PrinterId printerId) {
    Icon icon;
    File iconFile = getIconFileName(printerId);
    if (iconFile != null && iconFile.exists()) {
        try (FileInputStream is = new FileInputStream(iconFile)) {
            icon = Icon.createFromStream(is);
        } catch (IOException e) {
            icon = null;
            Log.e(LOG_TAG, "Could not read icon from " + iconFile, e);
        }
        // Touch file so that it is the not likely to be removed
        iconFile.setLastModified(System.currentTimeMillis());
    } else {
        icon = null;
    }
    return icon;
}

Example 15 with Nullable

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

the class CustomPrinterIconCache method getIconFileName.

/**
     * Return the file name to be used for the icon of a printer
     *
     * @param printerId the id of the printer
     *
     * @return The file to be used for the icon of the printer
     */
@Nullable
private File getIconFileName(@NonNull PrinterId printerId) {
    StringBuffer sb = new StringBuffer(printerId.getServiceName().getPackageName());
    sb.append("-");
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        md.update((printerId.getServiceName().getClassName() + ":" + printerId.getLocalId()).getBytes("UTF-16"));
        sb.append(String.format("%#040x", new java.math.BigInteger(1, md.digest())));
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException e) {
        Log.e(LOG_TAG, "Could not compute custom printer icon file name", e);
        return null;
    }
    return new File(mCacheDirectory, sb.toString());
}