RichInputConnection.java

    /**
     * Requests the editor to call back {@link InputMethodManager#updateCursorAnchorInfo}.
     * @param enableMonitor {@code true} to request the editor to call back the method whenever the
     * cursor/anchor position is changed.
     * @param requestImmediateCallback {@code true} to request the editor to call back the method
     * as soon as possible to notify the current cursor/anchor position to the input method.
     * @return {@code true} if the request is accepted. Returns {@code false} otherwise, which
     * includes "not implemented" or "rejected" or "temporarily unavailable" or whatever which
     * prevents the application from fulfilling the request. (TODO: Improve the API when it turns
     * out that we actually need more detailed error codes)
     */
    public boolean requestCursorUpdates(final boolean enableMonitor,
            final boolean requestImmediateCallback) {
        mIC = mParent.getCurrentInputConnection();
        if (!isConnected()) {
            return false;
        }
        return InputConnectionCompatUtils.requestCursorUpdates(
                mIC, enableMonitor, requestImmediateCallback);
    }
}