Examples with LongSparseArray androidx.collection.LongSparseArray used on opensource projects

Example 1 with LongSparseArray

use of androidx.collection.LongSparseArray in project kdeconnect-android by KDE.

the class ExtendedFragmentAdapter method getFragments.

protected LongSparseArray<Fragment> getFragments() {
    try {
        Field fragmentsField = FragmentStateAdapter.class.getDeclaredField("mFragments");
        fragmentsField.setAccessible(true);
        Object fieldData = fragmentsField.get(this);
        if (fieldData instanceof LongSparseArray) {
            // noinspection unchecked
            return (LongSparseArray<Fragment>) fieldData;
        }
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return null;
}

Example 2 with LongSparseArray

use of androidx.collection.LongSparseArray in project android-maps-utils by googlemaps.

the class HeatmapTileProvider method getMaxValue.

/**
 * Calculate a reasonable maximum intensity value to map to maximum color intensity
 *
 * @param points    Collection of LatLngs to put into buckets
 * @param bounds    Bucket boundaries
 * @param radius    radius of convolution
 * @param screenDim larger dimension of screen in pixels (for scale)
 * @return Approximate max value
 */
static double getMaxValue(Collection<WeightedLatLng> points, Bounds bounds, int radius, int screenDim) {
    // Approximate scale as if entire heatmap is on the screen
    // ie scale dimensions to larger of width or height (screenDim)
    double minX = bounds.minX;
    double maxX = bounds.maxX;
    double minY = bounds.minY;
    double maxY = bounds.maxY;
    double boundsDim = (maxX - minX > maxY - minY) ? maxX - minX : maxY - minY;
    // Number of buckets: have diameter sized buckets
    int nBuckets = (int) (screenDim / (2 * radius) + 0.5);
    // Scaling factor to convert width in terms of point distance, to which bucket
    double scale = nBuckets / boundsDim;
    // Make buckets
    // Use a sparse array - use LongSparseArray just in case
    LongSparseArray<LongSparseArray<Double>> buckets = new LongSparseArray<LongSparseArray<Double>>();
    // double[][] buckets = new double[nBuckets][nBuckets];
    // Assign into buckets + find max value as we go along
    double x, y;
    double max = 0;
    for (WeightedLatLng l : points) {
        x = l.getPoint().x;
        y = l.getPoint().y;
        int xBucket = (int) ((x - minX) * scale);
        int yBucket = (int) ((y - minY) * scale);
        // Check if x bucket exists, if not make it
        LongSparseArray<Double> column = buckets.get(xBucket);
        if (column == null) {
            column = new LongSparseArray<Double>();
            buckets.put(xBucket, column);
        }
        // Check if there is already a y value there
        Double value = column.get(yBucket);
        if (value == null) {
            value = 0.0;
        }
        value += l.getIntensity();
        // Yes, do need to update it, despite it being a Double.
        column.put(yBucket, value);
        if (value > max)
            max = value;
    }
    return max;
}

Example 3 with LongSparseArray

use of androidx.collection.LongSparseArray in project android-maps-utils by googlemaps.

the class GridBasedAlgorithm method getClusters.

@Override
public Set<? extends Cluster<T>> getClusters(float zoom) {
    long numCells = (long) Math.ceil(256 * Math.pow(2, zoom) / mGridSize);
    SphericalMercatorProjection proj = new SphericalMercatorProjection(numCells);
    HashSet<Cluster<T>> clusters = new HashSet<Cluster<T>>();
    LongSparseArray<StaticCluster<T>> sparseArray = new LongSparseArray<StaticCluster<T>>();
    synchronized (mItems) {
        for (T item : mItems) {
            Point p = proj.toPoint(item.getPosition());
            long coord = getCoord(numCells, p.x, p.y);
            StaticCluster<T> cluster = sparseArray.get(coord);
            if (cluster == null) {
                cluster = new StaticCluster<T>(proj.toLatLng(new Point(Math.floor(p.x) + .5, Math.floor(p.y) + .5)));
                sparseArray.put(coord, cluster);
                clusters.add(cluster);
            }
            cluster.add(item);
        }
    }
    return clusters;
}

Example 4 with LongSparseArray

use of androidx.collection.LongSparseArray in project AndroidUtilCode by Blankj.

the class ObjectUtilsTest method isEmpty.

@Test
public void isEmpty() {
    StringBuilder sb = new StringBuilder("");
    StringBuilder sb1 = new StringBuilder(" ");
    String string = "";
    String string1 = " ";
    int[][] arr = new int[][] {};
    LinkedList<Integer> list = new LinkedList<>();
    HashMap<String, Integer> map = new HashMap<>();
    SimpleArrayMap<String, Integer> sam = new SimpleArrayMap<>();
    SparseArray<String> sa = new SparseArray<>();
    SparseBooleanArray sba = new SparseBooleanArray();
    SparseIntArray sia = new SparseIntArray();
    SparseLongArray sla = new SparseLongArray();
    LongSparseArray<String> lsa = new LongSparseArray<>();
    android.util.LongSparseArray<String> lsaV4 = new android.util.LongSparseArray<>();
    assertTrue(ObjectUtils.isEmpty(sb));
    assertFalse(ObjectUtils.isEmpty(sb1));
    assertTrue(ObjectUtils.isEmpty(string));
    assertFalse(ObjectUtils.isEmpty(string1));
    assertTrue(ObjectUtils.isEmpty(arr));
    assertTrue(ObjectUtils.isEmpty(list));
    assertTrue(ObjectUtils.isEmpty(map));
    assertTrue(ObjectUtils.isEmpty(sam));
    assertTrue(ObjectUtils.isEmpty(sa));
    assertTrue(ObjectUtils.isEmpty(sba));
    assertTrue(ObjectUtils.isEmpty(sia));
    assertTrue(ObjectUtils.isEmpty(sla));
    assertTrue(ObjectUtils.isEmpty(lsa));
    assertTrue(ObjectUtils.isEmpty(lsaV4));
    assertTrue(!ObjectUtils.isNotEmpty(sb));
    assertFalse(!ObjectUtils.isNotEmpty(sb1));
    assertTrue(!ObjectUtils.isNotEmpty(string));
    assertFalse(!ObjectUtils.isNotEmpty(string1));
    assertTrue(!ObjectUtils.isNotEmpty(arr));
    assertTrue(!ObjectUtils.isNotEmpty(list));
    assertTrue(!ObjectUtils.isNotEmpty(map));
    assertTrue(!ObjectUtils.isNotEmpty(sam));
    assertTrue(!ObjectUtils.isNotEmpty(sa));
    assertTrue(!ObjectUtils.isNotEmpty(sba));
    assertTrue(!ObjectUtils.isNotEmpty(sia));
    assertTrue(!ObjectUtils.isNotEmpty(sla));
    assertTrue(!ObjectUtils.isNotEmpty(lsa));
    assertTrue(!ObjectUtils.isNotEmpty(lsaV4));
}

Example 5 with LongSparseArray

use of androidx.collection.LongSparseArray in project lottie-android by airbnb.

the class LottieCompositionMoshiParser method parse.

public static LottieComposition parse(JsonReader reader) throws IOException {
    float scale = Utils.dpScale();
    float startFrame = 0f;
    float endFrame = 0f;
    float frameRate = 0f;
    final LongSparseArray<Layer> layerMap = new LongSparseArray<>();
    final List<Layer> layers = new ArrayList<>();
    int width = 0;
    int height = 0;
    Map<String, List<Layer>> precomps = new HashMap<>();
    Map<String, LottieImageAsset> images = new HashMap<>();
    Map<String, Font> fonts = new HashMap<>();
    List<Marker> markers = new ArrayList<>();
    SparseArrayCompat<FontCharacter> characters = new SparseArrayCompat<>();
    LottieComposition composition = new LottieComposition();
    reader.beginObject();
    while (reader.hasNext()) {
        switch(reader.selectName(NAMES)) {
            case 0:
                width = reader.nextInt();
                break;
            case 1:
                height = reader.nextInt();
                break;
            case 2:
                startFrame = (float) reader.nextDouble();
                break;
            case 3:
                endFrame = (float) reader.nextDouble() - 0.01f;
                break;
            case 4:
                frameRate = (float) reader.nextDouble();
                break;
            case 5:
                String version = reader.nextString();
                String[] versions = version.split("\\.");
                int majorVersion = Integer.parseInt(versions[0]);
                int minorVersion = Integer.parseInt(versions[1]);
                int patchVersion = Integer.parseInt(versions[2]);
                if (!Utils.isAtLeastVersion(majorVersion, minorVersion, patchVersion, 4, 4, 0)) {
                    composition.addWarning("Lottie only supports bodymovin >= 4.4.0");
                }
                break;
            case 6:
                parseLayers(reader, composition, layers, layerMap);
                break;
            case 7:
                parseAssets(reader, composition, precomps, images);
                break;
            case 8:
                parseFonts(reader, fonts);
                break;
            case 9:
                parseChars(reader, composition, characters);
                break;
            case 10:
                parseMarkers(reader, markers);
                break;
            default:
                reader.skipName();
                reader.skipValue();
        }
    }
    int scaledWidth = (int) (width * scale);
    int scaledHeight = (int) (height * scale);
    Rect bounds = new Rect(0, 0, scaledWidth, scaledHeight);
    composition.init(bounds, startFrame, endFrame, frameRate, layers, layerMap, precomps, images, characters, fonts, markers);
    return composition;
}