直接上代码！

    formSelected: function (me, record) {
        console.log(record.data);
        var icwmStatusForm = this.lookup("icwmStatusForm");
        icwmStatusForm.getForm().setValues({
            "iiSn": record.data.iiSn,
            "sysState": ''
        });

        //下面的是定时的   function是定时需要执行的东西
        var task = {
            run : function () {
                let iiSn = icwmStatusForm.getForm().getValues().iiSn;
                if(!iiSn){
                    iiSn = record.data.iiSn;
                }

                Ext.Ajax.reqParams('~/xxx/icwm_sys_status_info.json',
                    {iiSn: iiSn},
                    function (data) {
                        var value = null;
                        if(data.data){
                            value = data.data;
                        }else{
                            value = {
                                "iiSn": iiSn,
                                "sysState": ''
                            };
                        }
                        icwmStatusForm.getForm().setValues(value);
                    }, true
                );
            },
            interval : 2000, //2秒刷新一次
            scope : this
        };
        //定时执行任务
        Ext.util.TaskManager.start(task);
    }