Example usage for java.lang.ref WeakReference WeakReference

Introduction

In this page you can find the example usage for java.lang.ref WeakReference WeakReference.

Prototype

public WeakReference(T referent)

Source Link

Document

Creates a new weak reference that refers to the given object.

Usage

From source file:com.cleverua.test.thumbs.ImageDownloader.java

/**
 * Same as download but the image is always downloaded and the cache is not used.
 * Kept private at the moment as its interest is not clear.
 */// ww w. j a v a 2s.co m
private void forceDownload(String url, ImageView imageView, Drawable placeHolder) {
    // State sanity: url is guaranteed to never be null in DownloadedDrawable and cache keys.
    if (url == null) {
        imageView.setImageDrawable(null);
        return;
    }

    if (removePotentialDownload(url, imageView)) {
        BitmapDownloaderTask task = new BitmapDownloaderTask(url, imageView);
        imageView.setImageDrawable(placeHolder);
        imageView.setTag(new WeakReference<BitmapDownloaderTask>(task));

        imageView.setMinimumHeight(156);

        pendingTasks.offerLast(task);
        if (loaderTask == null || loaderTask.getStatus() == AsyncTask.Status.FINISHED) {
            loaderTask = pendingTasks.poll();
            loaderTask.execute();
        }
    }
}

From source file:ca.phon.app.session.editor.view.media_player.PlayCustomSegmentDialog.java

/**
 * Constructor//ww w . j ava2s  .  c o m
 */
public PlayCustomSegmentDialog(SessionEditor editor, PhonMediaPlayer player) {
    super();
    this.mediaPlayerRef = new WeakReference<PhonMediaPlayer>(player);
    this.editorRef = new WeakReference<SessionEditor>(editor);
    init();
}

From source file:com.holonplatform.core.internal.beans.DefaultBeanPropertySet.java

/**
 * Constructor./*from  w w w . j  a v a 2s  . c o  m*/
 * @param <P> Actual property type
 * @param beanClass Bean class to which this property set refers
 * @param properties Properties of the set
 */
public <P extends PathProperty<?>> DefaultBeanPropertySet(Class<? extends T> beanClass,
        Collection<P> properties) {
    super(properties);
    this.beanClass = new WeakReference<>(beanClass);
}

From source file:de.uniba.wiai.kinf.pw.projects.lillytab.reasoner.tbox.AssertedRBox.java

public AssertedRBox(ITBox<I, L, K, R> tbox) {
    super();//from www .  j  a  va2  s. co  m
    _tboxRef = new WeakReference<>(tbox);

    _roleDomains = new GenericMultiHashMap<>(new TreeSetFactory<IDLClassExpression<I, L, K, R>>());
    _roleRanges = new GenericMultiHashMap<>(new TreeSetFactory<IDLNodeTerm<I, L, K, R>>());

    final ICollectionFactory<R, ? extends Collection<R>> roleSetFactory = new SortedListSetFactory<>();

    _roleTypeMap = new HashMap<>();
    _typeRoleMap = new GenericMultiHashMap<>(roleSetFactory);

    _rolePropertyMap = new GenericMultiHashMap<>(new EnumSetFactory<>(RoleProperty.class));
    _propertyRoleMap = new GenericMultiHashMap<>(roleSetFactory);

    _inverseRoles = new GenericMultiHashMap<>(roleSetFactory);
    _equivalentRoles = new GenericMultiHashMap<>(roleSetFactory);

    _subRoles = new GenericMultiHashMap<>(roleSetFactory);
    _superRoles = new GenericMultiHashMap<>(roleSetFactory);

    _rbox = new RBox<>(this);
}

From source file:com.todoroo.andlib.service.HttpRestClient.java

private synchronized HttpClient getClient() {
    if (httpClient == null || httpClient.get() == null) {
        DefaultHttpClient client = new DefaultHttpClient(cm, params);
        httpClient = new WeakReference<HttpClient>(client);
        actsAsGzippable(client);/*from  w  w  w .j a  v a 2  s .com*/
        return client;
    }
    return httpClient.get();
}

From source file:com.pdi.hybridge.HybridgeBroadcaster.java

public static synchronized HybridgeBroadcaster getInstance(WebView client) {
    final int hash = client.hashCode();
    WeakReference<HybridgeBroadcaster> instance = sClients.get(hash);
    if (instance == null || instance.get() == null) {
        instance = new WeakReference<HybridgeBroadcaster>(new HybridgeBroadcaster());
        sClients.put(hash, instance);/* www  .j  ava 2s .com*/
    }
    return instance.get();
}

From source file:android.support.transition.TransitionManagerPort.java

static ArrayMap<ViewGroup, ArrayList<TransitionPort>> getRunningTransitions() {
    WeakReference<ArrayMap<ViewGroup, ArrayList<TransitionPort>>> runningTransitions = sRunningTransitions
            .get();//from w w  w  .jav a  2 s  . c o  m
    if (runningTransitions == null || runningTransitions.get() == null) {
        ArrayMap<ViewGroup, ArrayList<TransitionPort>> transitions = new ArrayMap<>();
        runningTransitions = new WeakReference<>(transitions);
        sRunningTransitions.set(runningTransitions);
    }
    return runningTransitions.get();
}

From source file:StackLayout.java

/**
 * Set the currently displayed component.  If passed null for the component,
 * all contained components will be made invisible (sliding windows do this)
 * @param c Component to show//from w ww  .java 2  s.c o  m
 * @param parent Parent container
 */
public void showComponent(Component c, Container parent) {
    Component comp = getVisibleComponent();
    if (comp != c) {
        if (!parent.isAncestorOf(c) && c != null) {
            parent.add(c);
        }
        synchronized (parent.getTreeLock()) {
            if (comp != null) {
                comp.setVisible(false);
            }
            visibleComp = new WeakReference<Component>(c);
            if (c != null) {
                c.setVisible(true);
            }
            // trigger re-layout
            if (c instanceof JComponent) {
                ((JComponent) c).revalidate();
            } else {
                parent.validate(); //XXX revalidate should work!
            }
        }
    }
}

From source file:edu.umich.flowfence.service.NamespaceSharedPrefs.java

public static NamespaceSharedPrefs get(SharedPreferences basePrefs, String taintSetNamespace,
        String... taintNamespaces) {
    Objects.requireNonNull(taintSetNamespace);
    taintNamespaces = ArrayUtils.nullToEmpty(taintNamespaces);
    if (taintNamespaces.length == 0) {
        throw new IllegalArgumentException("Need at least one taint namespace!");
    }//from  w  w w . j  a  v  a 2s  .  c om
    Set<String> taintNamespaceSet = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(taintNamespaces)));
    if (taintNamespaceSet.contains(taintSetNamespace)) {
        throw new IllegalArgumentException("Taint set namespace also a taint namespace");
    }
    synchronized (g_mPrefsLookup) {
        NamespaceSharedPrefs prefsStrong = null;
        WeakReference<NamespaceSharedPrefs> prefsWeak = g_mPrefsLookup.get(basePrefs);
        if (prefsWeak != null) {
            prefsStrong = prefsWeak.get();
        }
        if (prefsStrong != null) {
            if (!taintSetNamespace.equals(prefsStrong.mTaintSetNamespace)
                    || !taintNamespaceSet.equals(prefsStrong.mTaintNamespaces)) {
                Log.w(TAG,
                        String.format(
                                "Inconsistent initialization: "
                                        + "initialized with TS=%s T=%s, retrieved with TS=%s T=%s",
                                prefsStrong.mTaintSetNamespace, prefsStrong.mTaintNamespaces, taintSetNamespace,
                                taintNamespaceSet));
            }
        } else {
            prefsStrong = new NamespaceSharedPrefs(basePrefs, taintSetNamespace, taintNamespaceSet);
            prefsWeak = new WeakReference<>(prefsStrong);
            g_mPrefsLookup.put(basePrefs, prefsWeak);
        }
        return prefsStrong;
    }
}

From source file:com.fatelon.partyphotobooth.setup.fragments.EventInfoSetupFragment.java

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    mCallbacks = new WeakReference<EventInfoSetupFragment.ICallbacks>(
            (EventInfoSetupFragment.ICallbacks) activity);
}