reactjs - 如何基于redux存储的内容在React Navigation中动态指定屏幕？

我的导航器是:

import { connect } from 'react-redux';
import { createDrawerNavigator } from 'react-navigation';

const screens = {
  Home: Homecreen,
};
if (this.props.userStatus !== 'active') {
  screens.Upgrade = UpgradeScreen;
}

const MainDrawer = createDrawerNavigator(screens);

const mapStateToProps = (state) => {
  return { userStatus: state.user.status };
};

export default connect(mapStateToProps)(MainDrawer);

我只想在用户状态为非事件时显示UpgradeScreen。在上面的代码中，我得到了错误:

undefined is not an object (evaluating 'this.props.userStatus')

我该如何解决？

最佳答案

为了访问this.props.userStatus，您应该有一个组件。您可以按照以下方法进行操作:

import { connect } from 'react-redux';
import { createDrawerNavigator } from 'react-navigation';

const screens = {
  Home: Homecreen,
};

const MainDrawer = ({ userStatus }) => {
  if (userStatus !== 'active') {
    screens.Upgrade = UpgradeScreen;
  }

  const Navigator = createDrawerNavigator(screens);

  return <Navigator />
}

const mapStateToProps = (state) => {
  return { userStatus: state.user.status };
};

export default connect(mapStateToProps)(MainDrawer);