Input 显示不能被使用ref

[derekzhou2015]

错误信息： Warning: Function components cannot be given refs. Attempts to access this ref will fail.%s%s
"react": "^16.7.0",
"react-dom": "^16.7.0",
"react-router-dom": "^4.3.1",
"react-scripts": "2.1.3",
"react-weui": "^1.1.3",
"weui": "^1.1.0"
代码 如下