能正常显示，但总是出现这种事件告警？明明已经在app.json里面注册了啊！

Wed Dec 05 2018 23:58:35 GMT+0800 (中国标准时间) 事件警告

VM884:1 Do not have regionchange handler in current page: pages/t_map/t_map. Please make sure that regionchange handler has been defined in pages/t_map/t_map, or pages/t_map/t_map has been added into app.json

"pages": [

"pages/index/index",

"pages/t_map/t_map"

],