public override void OnConnect (SendBirdModel.Channel channel)
	{
		Debug.Log ("Connect to " + channel.GetName ());
		string channelName = "#" +  channel.GetUrlWithoutAppPrefix();
		string channelUrl = channel.GetUrl ();
	}
	public override void OnConnect (SendBirdModel.Channel channel)
	{
		Debug.Log ("Connect to " + channel.GetName ());
		txtTitle.text = "#" +  channel.GetUrlWithoutAppPrefix();
	}