react-navigation实现正向和反向传值

首先：怎么实现跳转，看下面的

https://blog.youkuaiyun.com/shb2058/article/details/80390468

1.正向传值以及配置callback

this.props.navigation.navigate('ChoosePersonActivity', {
                data: '1', choosed: nowFuZePerson, callback: (backdata) => {
                    Alert.alert(backdata);
                }
            });

2.第二个页面收到数据并返回数据

this.props.navigation.state.params.data

this.props.navigation.state.params.choosed

返回的方法：调用如下

        this.props.navigation.state.params.callback('返回的数据');
        this.props.navigation.goBack();