/**
* Adds a callback to receive updates from the session. Updates will be posted on the specified
* handler's thread.
*
* @param callback The callback object, must not be null.
* @param handler The handler to post updates on. If null the callers thread will be used.
*/
public void registerCallback(Callback callback, Handler handler) {
if (callback == null) {
throw new IllegalArgumentException("callback cannot be null");
}
if (handler == null) {
handler = new Handler();
}
mImpl.registerCallback(callback, handler);
}
