反应导航 - “未定义不是一个对象（评估'Component.router.getStateForAction'）”

Question

我收到此错误：

undefined is not an object (evaluating 'Component.router.getStateForAction')

这里是code on snack

这是screenshot from emulator on my comp

这是相关代码

const App = () => <AppContainer />;

const AppSwitchNavigator = () =>
  createSwitchNavigator({
    WelcomeScreen
  });

const AppContainer = createAppContainer(AppSwitchNavigator);

export default App;

不确定我做错了什么还是这是一个错误？

Answer 1

你传递的是一个函数而不是一个 Navigator 来 createAppContainer

改变

const AppSwitchNavigator = () =>
  createSwitchNavigator({
    WelcomeScreen
  });

到

const AppSwitchNavigator = createSwitchNavigator({ WelcomeScreen });