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

Example 46 with Nullable

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

the class Resources method getColorStateList.

/**
     * Returns a themed color state list associated with a particular resource
     * ID. The resource may contain either a single raw color value or a
     * complex {@link ColorStateList} holding multiple possible colors.
     *
     * @param id The desired resource identifier of a {@link ColorStateList},
     *           as generated by the aapt tool. This integer encodes the
     *           package, type, and resource entry. The value 0 is an invalid
     *           identifier.
     * @param theme The theme used to style the color attributes, may be
     *              {@code null}.
     *
     * @throws NotFoundException Throws NotFoundException if the given ID does
     *         not exist.
     *
     * @return A themed ColorStateList object containing either a single solid
     *         color or multiple colors that can be selected based on a state.
     */
@Nullable
public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) throws NotFoundException {
    final TypedValue value = obtainTempTypedValue();
    try {
        final ResourcesImpl impl = mResourcesImpl;
        impl.getValue(id, value, true);
        return impl.loadColorStateList(this, value, id, theme);
    } finally {
        releaseTempTypedValue(value);
    }
}

Example 47 with Nullable

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

the class ProgressBar method getTintTarget.

/**
     * Returns the drawable to which a tint or tint mode should be applied.
     *
     * @param layerId id of the layer to modify
     * @param shouldFallback whether the base drawable should be returned
     *                       if the id does not exist
     * @return the drawable to modify
     */
@Nullable
private Drawable getTintTarget(int layerId, boolean shouldFallback) {
    Drawable layer = null;
    final Drawable d = mProgressDrawable;
    if (d != null) {
        mProgressDrawable = d.mutate();
        if (d instanceof LayerDrawable) {
            layer = ((LayerDrawable) d).findDrawableByLayerId(layerId);
        }
        if (shouldFallback && layer == null) {
            layer = d;
        }
    }
    return layer;
}

Example 48 with Nullable

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

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 49 with Nullable

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

the class ResourcesManager method getResources.

/**
     * Gets or creates a new Resources object associated with the IBinder token. References returned
     * by this method live as long as the Activity, meaning they can be cached and used by the
     * Activity even after a configuration change. If any other parameter is changed
     * (resDir, splitResDirs, overrideConfig) for a given Activity, the same Resources object
     * is updated and handed back to the caller. However, changing the class loader will result in a
     * new Resources object.
     * <p/>
     * If activityToken is null, a cached Resources object will be returned if it matches the
     * input parameters. Otherwise a new Resources object that satisfies these parameters is
     * returned.
     *
     * @param activityToken Represents an Activity. If null, global resources are assumed.
     * @param resDir The base resource path. Can be null (only framework resources will be loaded).
     * @param splitResDirs An array of split resource paths. Can be null.
     * @param overlayDirs An array of overlay paths. Can be null.
     * @param libDirs An array of resource library paths. Can be null.
     * @param displayId The ID of the display for which to create the resources.
     * @param overrideConfig The configuration to apply on top of the base configuration. Can be
     * null. Mostly used with Activities that are in multi-window which may override width and
     * height properties from the base config.
     * @param compatInfo The compatibility settings to use. Cannot be null. A default to use is
     * {@link CompatibilityInfo#DEFAULT_COMPATIBILITY_INFO}.
     * @param classLoader The class loader to use when inflating Resources. If null, the
     * {@link ClassLoader#getSystemClassLoader()} is used.
     * @return a Resources object from which to access resources.
     */
@Nullable
public Resources getResources(@Nullable IBinder activityToken, @Nullable String resDir, @Nullable String[] splitResDirs, @Nullable String[] overlayDirs, @Nullable String[] libDirs, int displayId, @Nullable Configuration overrideConfig, @NonNull CompatibilityInfo compatInfo, @Nullable ClassLoader classLoader) {
    try {
        Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, "ResourcesManager#getResources");
        final ResourcesKey key = new ResourcesKey(resDir, splitResDirs, overlayDirs, libDirs, displayId, // Copy
        overrideConfig != null ? new Configuration(overrideConfig) : null, compatInfo);
        classLoader = classLoader != null ? classLoader : ClassLoader.getSystemClassLoader();
        return getOrCreateResources(activityToken, key, classLoader);
    } finally {
        Trace.traceEnd(Trace.TRACE_TAG_RESOURCES);
    }
}

Example 50 with Nullable

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

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;
}