Method onCompleted

AndroidAsync/src/com/koushikdutta/async/Util.java:63–69

(Exception ex)

        final CompletedCallback wrapper = new CompletedCallback() {
            boolean reported;
            @Override
            public void onCompleted(Exception ex) {
                if (reported)
                    return;
                reported = true;
                callback.onCompleted(ex);
            }
        };

        final WritableCallback cb = new WritableCallback() {