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

Example 81 with Nullable

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

the class PackageManagerService method getSetupWizardPackageName.

@Nullable
private String getSetupWizardPackageName() {
    final Intent intent = new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_SETUP_WIZARD);
    final List<ResolveInfo> matches = queryIntentActivitiesInternal(intent, null, MATCH_SYSTEM_ONLY | MATCH_DIRECT_BOOT_AWARE | MATCH_DIRECT_BOOT_UNAWARE | MATCH_DISABLED_COMPONENTS, UserHandle.myUserId());
    if (matches.size() == 1) {
        return matches.get(0).getComponentInfo().packageName;
    } else {
        Slog.e(TAG, "There should probably be exactly one setup wizard; found " + matches.size() + ": matches=" + matches);
        return null;
    }
}

Example 82 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 83 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 84 with Nullable

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

the class CascadingMenuPopup method findParentViewForSubmenu.

/**
     * Attempts to find the view for the menu item that owns the specified
     * submenu.
     *
     * @param parentInfo info for the parent menu
     * @param submenu the submenu whose parent view should be obtained
     * @return the parent view, or {@code null} if one could not be found
     */
@Nullable
private View findParentViewForSubmenu(@NonNull CascadingMenuInfo parentInfo, @NonNull MenuBuilder submenu) {
    final MenuItem owner = findMenuItemForSubmenu(parentInfo.menu, submenu);
    if (owner == null) {
        // Couldn't find the submenu owner.
        return null;
    }
    // The adapter may be wrapped. Adjust the index if necessary.
    final int headersCount;
    final MenuAdapter menuAdapter;
    final ListView listView = parentInfo.getListView();
    final ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter instanceof HeaderViewListAdapter) {
        final HeaderViewListAdapter headerAdapter = (HeaderViewListAdapter) listAdapter;
        headersCount = headerAdapter.getHeadersCount();
        menuAdapter = (MenuAdapter) headerAdapter.getWrappedAdapter();
    } else {
        headersCount = 0;
        menuAdapter = (MenuAdapter) listAdapter;
    }
    // Find the index within the menu adapter's data set of the menu item.
    int ownerPosition = AbsListView.INVALID_POSITION;
    for (int i = 0, count = menuAdapter.getCount(); i < count; i++) {
        if (owner == menuAdapter.getItem(i)) {
            ownerPosition = i;
            break;
        }
    }
    if (ownerPosition == AbsListView.INVALID_POSITION) {
        // Couldn't find the owner within the menu adapter.
        return null;
    }
    // Adjust the index for the adapter used to display views.
    ownerPosition += headersCount;
    // Adjust the index for the visible views.
    final int ownerViewPosition = ownerPosition - listView.getFirstVisiblePosition();
    if (ownerViewPosition < 0 || ownerViewPosition >= listView.getChildCount()) {
        // Not visible on screen.
        return null;
    }
    return listView.getChildAt(ownerViewPosition);
}

Example 85 with Nullable

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

the class InputManagerService method getKeyboardLayoutForInputDevice.

// Binder call
@Override
@Nullable
public KeyboardLayout getKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier, InputMethodInfo imeInfo, InputMethodSubtype imeSubtype) {
    InputMethodSubtypeHandle handle = new InputMethodSubtypeHandle(imeInfo, imeSubtype);
    String key = getLayoutDescriptor(identifier);
    final String keyboardLayoutDescriptor;
    synchronized (mDataStore) {
        keyboardLayoutDescriptor = mDataStore.getKeyboardLayout(key, handle);
    }
    if (keyboardLayoutDescriptor == null) {
        return null;
    }
    final KeyboardLayout[] result = new KeyboardLayout[1];
    visitKeyboardLayout(keyboardLayoutDescriptor, new KeyboardLayoutVisitor() {

        @Override
        public void visitKeyboardLayout(Resources resources, int keyboardLayoutResId, KeyboardLayout layout) {
            result[0] = layout;
        }
    });
    if (result[0] == null) {
        Slog.w(TAG, "Could not get keyboard layout with descriptor '" + keyboardLayoutDescriptor + "'.");
    }
    return result[0];
}