uni-app打包app tabbar图片问题

在没有云打包之前,在h5端,小程序端,手机端,全部都正常.但是打包成app了之后发现,tabbar的图标没有显示出来
我之前的tabbar是这样写的

"list": [{
				"pagePath": "pages/home/home",
				"text": "迷妮",
				"iconPath": "./static/icon/home-default.png",
				"selectedIconPath": "./static/icon/home-acitve.png"
			},
			{
				"pagePath": "pages/msg/msg",
				"text": "解读所",
				"iconPath": "./static/icon/news-default.png",
				"selectedIconPath": "./static/icon/news-active.png"
			},
			{
				"pagePath": "pages/profile/profile",
				"text": "秘密基地",
				"iconPath": "./static/icon/my-default.png",
				"selectedIconPath": "./static/icon/my-active.png"
			}
		]

修改成

"list": [{
				"pagePath": "pages/home/home",
				"text": "迷妮",
				"iconPath": "static/icon/home-default.png",
				"selectedIconPath": "static/icon/home-acitve.png"
			},
			{
				"pagePath": "pages/msg/msg",
				"text": "解读所",
				"iconPath": "static/icon/news-default.png",
				"selectedIconPath": "static/icon/news-active.png"
			},
			{
				"pagePath": "pages/profile/profile",
				"text": "秘密基地",
				"iconPath": "static/icon/my-default.png",
				"selectedIconPath": "static/icon/my-active.png"
			}
		]

再次打包就正常显示图标了
具体是什么原因,不太清楚