无法访问路由参数(功能组件)

Unable to access route params (functional component)

我正在尝试将用户名从 signup1 传递给 signup 2:

handleSignUp = () => {
      console.log(this.state.username) <------------- This logs correctly 

      try {
        this.props.navigation.navigate('Signup2', {
          username: this.state.username, <------------- Passing here
        });
      } catch (error) {
        console.log(error);
      }
    }

这是来自 Signup2 的代码:

const Signup2 = (props, route, navigation) => {

  const { username } = route.params; <----------- Trying to access it here

我收到以下错误:

undefined is not an object (evaluating 'route.params.username')

我也试过这个:

const { username } = props.route.params

而且都不起作用。

如何访问路由参数?

我相信如果您想按预期访问它们,您需要解构路由和导航属性。

你可以去:

const Signup2 = ({route, navigation}) => {
   const { username } = route.params
}

或者也许:

const Signup2 = (props) => {
   const { username } = props.route.params
}