How to pass params to DrawerNavigator?

问题:

TLDR: I have a Login screen where user logs in and navigates to second screen. There I want to open the menu and have the user name appear as text. How can I pass the user name to the menu? (DrawerNavigator).

Some samples of my code below.

Router:

import MyMenu from './MyMenu';

const MyStack = StackNavigator({
  Login: {screen: Login},
  Home: {screen: Home}
  // more screens...
});

export const MyDrawer = DrawerNavigator({
  Main: { screen: MyStack }
},
  { contentComponent: MyMenu }
);

Home Screen:

openMenu() {
  this.props.navigation.navigate('DrawerOpen', userName);
}

MyMenu:

render() {
  const userName = this.props.navigation.state.params;
  return (
    <View>
          <Text>{userName}</Text>
          // more stuff
    </View>
  );
}

回答1:

I think this is what you want.

import MyMenu from './MyMenu';

const MyStack = StackNavigator({
  Login: {screen: Login},
  Home: {screen: Home}
  // more screens...
});

export const MyDrawer = DrawerNavigator({
  Main: { screen:({navigation}) => <MyStack screenProps={drawerNavigation:navigation}/> }
},
  { contentComponent: MyMenu }
);

Then you can access drawer's navigation from your Stack navigation like below.

this.props.screenProps.drawerNavigation.DO_WHATEVER

回答2:

You need to pass props to your MyMenu Component:

Router:

    export const MyDrawer = DrawerNavigator({
      Main: { screen: MyStack }
    },
      { contentComponent: (props) => <MyMenu {...props} /> }
    );

Home Screen:

openMenu() {
  this.props.navigation.navigate('DrawerOpen', {userName: userName});
}

回答3:

Alright, after spending so much time on this, I finally found a solution. Simply put, you can only send navigation props when navigating to a new screen - 'DrawerOpen' does not count for this.

To solve this I had to change my structure a little bit, instead of having the DrawerNavigator as the root drawer, I have a StackNavigator as the root drawer.

Before:

const MyStack = StackNavigator({
  Login: {screen: Login},
  Home: {screen: Home}
  // more screens...
});

export const MyDrawer = DrawerNavigator({
  Main: { screen: MyStack }
},
  { contentComponent: MyMenu }
);

After:

const MyStack = StackNavigator({
  Home: {screen: Home},
  // more screens...
});

const MyDrawer = DrawerNavigator({
  Main: { screen: MyStack }
},
  { contentComponent: MyMenu }
);

export const RootStack = StackNavigator({
  Login: {screen: Login},
  Drawer: {
     screen: MyDrawer,
     navigationOptions: { header: null } } //prevent double header
});

Now in Login screen I navigate to Drawer like this:

_login() {
    this.props.navigation.navigate('Drawer', { userName: userName });
}

And finally in MyMenu (which is part of 'Drawer'):

render() {
  const { userName } = this.props.navigation.state.params;
  return (
    <View>
          <Text>{userName}</Text>
          // more stuff
    </View>
  );
}

It works!