// 设置群公告
			updateGroupAnnouncement: function(gongao) { 
				var me = this;
				var options = {
					groupId: this.roomId,
					announcement: this.gongao,
					success: function(resp) {
						console.log(resp)
						// 获取群公告
						me.fetchGroupAnnouncement()
					},
					error: function() {},
				};
				WebIM.conn.updateGroupAnnouncement(options)
			},
			fetchGroupAnnouncement: function() {
				var me = this;
				// 获取群公告
				var options = {
					groupId: this.roomId,
					success: function(resp) {
						console.log(resp)
						me.groupAnn = resp.data.announcement
					},
					error: function() {},
				};
				WebIM.conn.fetchGroupAnnouncement(options)
			},