| /** | 
|  * 更新自定义顶部导航栏的高度 | 
|  */ | 
| function updateCustomBarInfo () { | 
|   return new Promise((resolve, reject) => { | 
|     uni.getSystemInfo({ | 
|       success: (e) => { | 
|         let statusBarHeight = 0 | 
|         let customBarHeight = 0 | 
|         // #ifndef MP | 
|         statusBarHeight = e.statusBarHeight | 
|         if (e.platform == 'android') { | 
|           customBarHeight = e.statusBarHeight + 50 | 
|         } else { | 
|           customBarHeight = e.statusBarHeight + 45 | 
|         }; | 
|         // #endif | 
|   | 
|         // #ifdef MP-WEIXIN | 
|         statusBarHeight = e.statusBarHeight | 
|         let custom = wx.getMenuButtonBoundingClientRect() | 
|         customBarHeight = custom.bottom + ((custom.top - e.statusBarHeight) <= 4 ? (custom.top - e | 
|           .statusBarHeight) + 4 : (custom.top - e.statusBarHeight)) | 
|         // #endif         | 
|   | 
|         // #ifdef MP-ALIPAY | 
|         statusBarHeight = e.statusBarHeight | 
|         customBarHeight = e.statusBarHeight + e.titleBarHeight | 
|         // #endif | 
|         resolve({ | 
|           statusBarHeight, | 
|           customBarHeight | 
|         }) | 
|       }, | 
|       fail: (err) => { | 
|         console.log("获取设备信息失败", err); | 
|         reject() | 
|       } | 
|     }) | 
|   | 
|   }) | 
| } | 
|   | 
| export default updateCustomBarInfo |