onTabItemTap真机不触发--大神帮帮忙

我有三个TABLE

onTabItemTap真机不触发，我所有的tabBar都不触发onTabItemTap，加日志确认没有触发，我现在只能每个页面加一个button,一直解决不了，但在开发电脑上，都是可以正常触发的，我头都痛了，哪位大神帮我一下？？？

不知中哪里弄错了，我真是没招了

"tabBar": {

"list": [{

"pagePath": "pages/index/index",

"text": "明细",

"iconPath": "images/detail.png",

"selectedIconPath": "images/detail_act.png"

},{

"pagePath": "pages/scan/scan",

"text": "扫描",

"iconPath": "images/scan.png",

"selectedIconPath": "images/scan_act.png"

},{

"pagePath": "pages/login/login",

"text": "账号",

"iconPath": "images/my.png",

"selectedIconPath": "images/my_act.png"

}

onTabItemTap(item) {

        var that=this;

        that.getData();

},