Examples with ContentObserver android.database.ContentObserver used on opensource projects

Example 21 with ContentObserver

use of android.database.ContentObserver in project platform_frameworks_base by android.

the class ValidateNotificationPeople method initialize.

public void initialize(Context context, NotificationUsageStats usageStats) {
    if (DEBUG)
        Slog.d(TAG, "Initializing  " + getClass().getSimpleName() + ".");
    mUserToContextMap = new ArrayMap<>();
    mBaseContext = context;
    mUsageStats = usageStats;
    mPeopleCache = new LruCache<String, LookupResult>(PEOPLE_CACHE_SIZE);
    mEnabled = ENABLE_PEOPLE_VALIDATOR && 1 == Settings.Global.getInt(mBaseContext.getContentResolver(), SETTING_ENABLE_PEOPLE_VALIDATOR, 1);
    if (mEnabled) {
        mHandler = new Handler();
        mObserver = new ContentObserver(mHandler) {

            @Override
            public void onChange(boolean selfChange, Uri uri, int userId) {
                super.onChange(selfChange, uri, userId);
                if (DEBUG || mEvictionCount % 100 == 0) {
                    if (VERBOSE)
                        Slog.i(TAG, "mEvictionCount: " + mEvictionCount);
                }
                mPeopleCache.evictAll();
                mEvictionCount++;
            }
        };
        mBaseContext.getContentResolver().registerContentObserver(Contacts.CONTENT_URI, true, mObserver, UserHandle.USER_ALL);
    }
}

Example 22 with ContentObserver

use of android.database.ContentObserver in project platform_frameworks_base by android.

the class TelecomLoaderService method registerDefaultAppNotifier.

private void registerDefaultAppNotifier() {
    final PackageManagerInternal packageManagerInternal = LocalServices.getService(PackageManagerInternal.class);
    // Notify the package manager on default app changes
    final Uri defaultSmsAppUri = Settings.Secure.getUriFor(Settings.Secure.SMS_DEFAULT_APPLICATION);
    final Uri defaultDialerAppUri = Settings.Secure.getUriFor(Settings.Secure.DIALER_DEFAULT_APPLICATION);
    ContentObserver contentObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {

        @Override
        public void onChange(boolean selfChange, Uri uri, int userId) {
            if (defaultSmsAppUri.equals(uri)) {
                ComponentName smsComponent = SmsApplication.getDefaultSmsApplication(mContext, true);
                if (smsComponent != null) {
                    packageManagerInternal.grantDefaultPermissionsToDefaultSmsApp(smsComponent.getPackageName(), userId);
                }
            } else if (defaultDialerAppUri.equals(uri)) {
                String packageName = DefaultDialerManager.getDefaultDialerApplication(mContext);
                if (packageName != null) {
                    packageManagerInternal.grantDefaultPermissionsToDefaultDialerApp(packageName, userId);
                }
                updateSimCallManagerPermissions(packageManagerInternal, userId);
            }
        }
    };
    mContext.getContentResolver().registerContentObserver(defaultSmsAppUri, false, contentObserver, UserHandle.USER_ALL);
    mContext.getContentResolver().registerContentObserver(defaultDialerAppUri, false, contentObserver, UserHandle.USER_ALL);
}

Example 23 with ContentObserver

use of android.database.ContentObserver in project sqlbrite by square.

the class BriteContentResolver method createQuery.

/**
   * Create an observable which will notify subscribers with a {@linkplain Query query} for
   * execution. Subscribers are responsible for <b>always</b> closing {@link Cursor} instance
   * returned from the {@link Query}.
   * <p>
   * Subscribers will receive an immediate notification for initial data as well as subsequent
   * notifications for when the supplied {@code uri}'s data changes. Unsubscribe when you no longer
   * want updates to a query.
   * <p>
   * Since content resolver triggers are inherently asynchronous, items emitted from the returned
   * observable use the {@link Scheduler} supplied to {@link SqlBrite#wrapContentProvider}. For
   * consistency, the immediate notification sent on subscribe also uses this scheduler. As such,
   * calling {@link Observable#subscribeOn subscribeOn} on the returned observable has no effect.
   * <p>
   * Note: To skip the immediate notification and only receive subsequent notifications when data
   * has changed call {@code skip(1)} on the returned observable.
   * <p>
   * <b>Warning:</b> this method does not perform the query! Only by subscribing to the returned
   * {@link Observable} will the operation occur.
   *
   * @see ContentResolver#query(Uri, String[], String, String[], String)
   * @see ContentResolver#registerContentObserver(Uri, boolean, ContentObserver)
   */
@CheckResult
@NonNull
public QueryObservable createQuery(@NonNull final Uri uri, @Nullable final String[] projection, @Nullable final String selection, @Nullable final String[] selectionArgs, @Nullable final String sortOrder, final boolean notifyForDescendents) {
    final Query query = new Query() {

        @Override
        public Cursor run() {
            long startNanos = nanoTime();
            Cursor cursor = contentResolver.query(uri, projection, selection, selectionArgs, sortOrder);
            if (logging) {
                long tookMillis = NANOSECONDS.toMillis(nanoTime() - startNanos);
                log("QUERY (%sms)\n  uri: %s\n  projection: %s\n  selection: %s\n  selectionArgs: %s\n  " + "sortOrder: %s\n  notifyForDescendents: %s", tookMillis, uri, Arrays.toString(projection), selection, Arrays.toString(selectionArgs), sortOrder, notifyForDescendents);
            }
            return cursor;
        }
    };
    OnSubscribe<Query> subscribe = new OnSubscribe<Query>() {

        @Override
        public void call(final Subscriber<? super Query> subscriber) {
            final ContentObserver observer = new ContentObserver(contentObserverHandler) {

                @Override
                public void onChange(boolean selfChange) {
                    subscriber.onNext(query);
                }
            };
            contentResolver.registerContentObserver(uri, notifyForDescendents, observer);
            subscriber.add(Subscriptions.create(new Action0() {

                @Override
                public void call() {
                    contentResolver.unregisterContentObserver(observer);
                }
            }));
            // Trigger initial query.
            subscriber.onNext(query);
        }
    };
    final Observable<Query> queryObservable = //
    Observable.create(subscribe).onBackpressureLatest().observeOn(//
    scheduler).compose(// Apply the user's query transformer.
    queryTransformer).onBackpressureLatest();
    // TODO switch to .to() when non-@Experimental
    return new QueryObservable(new OnSubscribe<Query>() {

        @Override
        public void call(Subscriber<? super Query> subscriber) {
            queryObservable.unsafeSubscribe(subscriber);
        }
    });
}

Example 24 with ContentObserver

use of android.database.ContentObserver in project squidb by yahoo.

the class UriNotifierTest method setUp.

@Override
protected void setUp() throws Exception {
    super.setUp();
    database.unregisterAllDataChangedNotifiers();
    for (ContentObserver observer : observers) {
        ContextProvider.getContext().getContentResolver().unregisterContentObserver(observer);
    }
}

Example 25 with ContentObserver

use of android.database.ContentObserver in project squidb by yahoo.

the class UriNotifierTest method listenTo.

private AtomicBoolean listenTo(Uri uri, boolean notifyForDescendants) {
    final AtomicBoolean gotUriNotification = new AtomicBoolean(false);
    ContentObserver observer = new ContentObserver(null) {

        @Override
        public void onChange(boolean selfChange) {
            gotUriNotification.set(true);
            super.onChange(selfChange);
        }
    };
    observers.add(observer);
    ContextProvider.getContext().getContentResolver().registerContentObserver(uri, notifyForDescendants, observer);
    return gotUriNotification;
}