tabBar iconfont在真机上不显示

"tabBar": {  
        "color": "#cccccc",  
        "backgroundColor": "#ffffff",  
        "borderStyle": "#dddddd",  
        "selectedColor": "#016D49",  
        "iconfontSrc": "static/fonts/iconfont.ttf",  
        "height": "128rpx",  
        "fontSize": "80rpx",  
        "iconWidth": "80rpx",  
        "list": [{  
            "pagePath": "pages/index/home",  
            "iconfont": {  
                "color": "#dddddd",  
                "selectedColor": "#016D49",  
                "fontSize": "80rpx",  
                "text": "\ue7c6",  
                "selectedText": "\ue7c6"  
            }  
        }, {  
            "pagePath": "pages/my/my",  
            "iconfont": {  
                "color": "#dddddd",  
                "selectedColor": "#016D49",  
                "text": "\ue7ae",  
                "fontSize": "80rpx",  
                "selectedText": "\ue7ae"  
            }  
        }],  
        "midButton": {  
            "iconfont": {  
                "color": "#016D49",  
                "selectedColor": "#016D49",  
                "fontSize": "80rpx",  
                "text": "\ue840",  
                "selectedText": "\ue840"  
            }  
        }  
    },

这是配置，运行到安卓App基座，tab上一片空白，图标都没显示