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

Example 61 with Nullable

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

the class PackageManagerService method getEphemeralInstallerLPr.

@Nullable
private ComponentName getEphemeralInstallerLPr() {
    final Intent intent = new Intent(Intent.ACTION_INSTALL_EPHEMERAL_PACKAGE);
    intent.addCategory(Intent.CATEGORY_DEFAULT);
    intent.setDataAndType(Uri.fromFile(new File("foo.apk")), PACKAGE_MIME_TYPE);
    final int resolveFlags = MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE | (!Build.IS_DEBUGGABLE ? MATCH_SYSTEM_ONLY : 0);
    final List<ResolveInfo> matches = queryIntentActivitiesInternal(intent, PACKAGE_MIME_TYPE, resolveFlags, UserHandle.USER_SYSTEM);
    if (matches.size() == 0) {
        return null;
    } else if (matches.size() == 1) {
        return matches.get(0).getComponentInfo().getComponentName();
    } else {
        throw new RuntimeException("There must be at most one ephemeral installer; found " + matches);
    }
}

Example 62 with Nullable

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

the class CryptoHelper method decryptBundle.

@Nullable
/* default */
Bundle decryptBundle(@NonNull Bundle bundle) throws GeneralSecurityException {
    Preconditions.checkNotNull(bundle, "Cannot decrypt null bundle.");
    byte[] iv = bundle.getByteArray(KEY_IV);
    byte[] encryptedBytes = bundle.getByteArray(KEY_CIPHER);
    byte[] mac = bundle.getByteArray(KEY_MAC);
    if (!verifyMac(encryptedBytes, iv, mac)) {
        Log.w(TAG, "Escrow mac mismatched!");
        return null;
    }
    IvParameterSpec ivSpec = new IvParameterSpec(iv);
    Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
    cipher.init(Cipher.DECRYPT_MODE, mEncryptionKey, ivSpec);
    byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
    Parcel decryptedParcel = Parcel.obtain();
    decryptedParcel.unmarshall(decryptedBytes, 0, decryptedBytes.length);
    decryptedParcel.setDataPosition(0);
    Bundle decryptedBundle = new Bundle();
    decryptedBundle.readFromParcel(decryptedParcel);
    decryptedParcel.recycle();
    return decryptedBundle;
}

Example 63 with Nullable

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

the class AndroidKeyStoreUnauthenticatedAESCipherSpi method engineGetParameters.

@Nullable
@Override
protected final AlgorithmParameters engineGetParameters() {
    if (!mIvRequired) {
        return null;
    }
    if ((mIv != null) && (mIv.length > 0)) {
        try {
            AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
            params.init(new IvParameterSpec(mIv));
            return params;
        } catch (NoSuchAlgorithmException e) {
            throw new ProviderException("Failed to obtain AES AlgorithmParameters", e);
        } catch (InvalidParameterSpecException e) {
            throw new ProviderException("Failed to initialize AES AlgorithmParameters with an IV", e);
        }
    }
    return null;
}

Example 64 with Nullable

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

the class TypedArray method getString.

/**
     * Retrieves the string value for the attribute at <var>index</var>.
     * <p>
     * If the attribute is not a string, this method will attempt to coerce
     * it to a string.
     *
     * @param index Index of attribute to retrieve.
     *
     * @return String holding string data. Any styling information is removed.
     *         Returns {@code null} if the attribute is not defined or could
     *         not be coerced to a string.
     * @throws RuntimeException if the TypedArray has already been recycled.
     */
@Nullable
public String getString(@StyleableRes int index) {
    if (mRecycled) {
        throw new RuntimeException("Cannot make calls to a recycled instance!");
    }
    index *= AssetManager.STYLE_NUM_ENTRIES;
    final int[] data = mData;
    final int type = data[index + AssetManager.STYLE_TYPE];
    if (type == TypedValue.TYPE_NULL) {
        return null;
    } else if (type == TypedValue.TYPE_STRING) {
        return loadStringValueAt(index).toString();
    }
    final TypedValue v = mValue;
    if (getValueAt(index, v)) {
        final CharSequence cs = v.coerceToString();
        return cs != null ? cs.toString() : null;
    }
    // We already checked for TYPE_NULL. This should never happen.
    throw new RuntimeException("getString of bad type: 0x" + Integer.toHexString(type));
}

Example 65 with Nullable

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

the class MediaCodec method getInputBuffer.

/**
     * Returns a {@link java.nio.Buffer#clear cleared}, writable ByteBuffer
     * object for a dequeued input buffer index to contain the input data.
     *
     * After calling this method any ByteBuffer or Image object
     * previously returned for the same input index MUST no longer
     * be used.
     *
     * @param index The index of a client-owned input buffer previously
     *              returned from a call to {@link #dequeueInputBuffer},
     *              or received via an onInputBufferAvailable callback.
     *
     * @return the input buffer, or null if the index is not a dequeued
     * input buffer, or if the codec is configured for surface input.
     *
     * @throws IllegalStateException if not in the Executing state.
     * @throws MediaCodec.CodecException upon codec error.
     */
@Nullable
public ByteBuffer getInputBuffer(int index) {
    ByteBuffer newBuffer = getBuffer(true, /* input */
    index);
    synchronized (mBufferLock) {
        invalidateByteBuffer(mCachedInputBuffers, index);
        mDequeuedInputBuffers.put(index, newBuffer);
    }
    return newBuffer;
}