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

Example 96 with Nullable

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

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 97 with Nullable

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

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;
}

Example 98 with Nullable

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

the class ResourcesManager method findKeyForResourceImplLocked.

/**
     * Find the ResourcesKey that this ResourcesImpl object is associated with.
     * @return the ResourcesKey or null if none was found.
     */
@Nullable
private ResourcesKey findKeyForResourceImplLocked(@NonNull ResourcesImpl resourceImpl) {
    final int refCount = mResourceImpls.size();
    for (int i = 0; i < refCount; i++) {
        WeakReference<ResourcesImpl> weakImplRef = mResourceImpls.valueAt(i);
        ResourcesImpl impl = weakImplRef != null ? weakImplRef.get() : null;
        if (impl != null && resourceImpl == impl) {
            return mResourceImpls.keyAt(i);
        }
    }
    return null;
}

Example 99 with Nullable

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

the class ResourcesManager method createResourcesImpl.

@Nullable
private ResourcesImpl createResourcesImpl(@NonNull ResourcesKey key) {
    final DisplayAdjustments daj = new DisplayAdjustments(key.mOverrideConfiguration);
    daj.setCompatibilityInfo(key.mCompatInfo);
    final AssetManager assets = createAssetManager(key);
    if (assets == null) {
        return null;
    }
    final DisplayMetrics dm = getDisplayMetrics(key.mDisplayId, daj);
    final Configuration config = generateConfig(key, dm);
    final ResourcesImpl impl = new ResourcesImpl(assets, dm, config, daj);
    if (DEBUG) {
        Slog.d(TAG, "- creating impl=" + impl + " with key: " + key);
    }
    return impl;
}

Example 100 with Nullable

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

the class ShortcutInfo method getIntent.

/**
     * Returns the intent that is executed when the user selects this shortcut.
     * If setIntents() was used, then return the last intent in the array.
     *
     * <p>Launcher apps <b>cannot</b> see the intent.  If a {@link ShortcutInfo} is
     * obtained via {@link LauncherApps}, then this method will always return null.
     * Launchers can only start a shortcut intent with {@link LauncherApps#startShortcut}.
     *
     * @see Builder#setIntent(Intent)
     */
@Nullable
public Intent getIntent() {
    if (mIntents == null || mIntents.length == 0) {
        return null;
    }
    final int last = mIntents.length - 1;
    final Intent intent = new Intent(mIntents[last]);
    return setIntentExtras(intent, mIntentPersistableExtrases[last]);
}