React Native：如何从导航堆栈中删除当前堆栈导航器

Question

I am struggling with a situation. So I have three stack navigators.

• navigator1 => screen1

• navigator2 => screen2

• navigator3 => screen3, screen4, screen5

I navigate from screen1 to screen2 . And then from screen2 to screen3 then screen4 then screen5 and then navigate to screen2 again. But now when I am on screen2 , onBack press I don't want to go on screen5 , instead want to go directly on screen1 .

When I tried to pop screen5 , screen4 and screen3 from stack just before navigating to screen2 from screen5 using the follwing code. It didn't work, still screen3 remains on stack.

  import { StackActions } from '@react-navigation/native';

  navigation.dispatch(
       StackActions.popToTop()
  );

OR

  import { StackActions } from '@react-navigation/native';

  navigation.dispatch(
       StackActions.pop(3)
  );

How to remove the navigator3 from the navigation stack? So that I would not go on screen5 from screen2 again onBackPress

I am using react-navigation version 5.x.

Answer 1

Check out this example it works as you want

import * as React from 'react';
import { View, Button, Text } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';

const Stack = createStackNavigator();

const A = ({ navigation }) => {
  return (
    <View>
      <Text>A</Text>
      <Button title={'Next'} onPress={() => navigation.navigate('Second')} />
    </View>
  );
};
const B = ({ navigation }) => {
  return (
    <View>
      <Text>B</Text>
      <Button
        title={'Next'}
        onPress={() => navigation.navigate('Third', { screen: 'C' })}
      />
    </View>
  );
};
const C = ({ navigation }) => {
  return (
    <View>
      <Text>C</Text>
      <Button
        title={'Next'}
        onPress={() => navigation.navigate('Third', { screen: 'D' })}
      />
    </View>
  );
};
const D = ({ navigation }) => {
  return (
    <View>
      <Text>D</Text>
      <Button
        title={'Next'}
        onPress={() => navigation.navigate('Third', { screen: 'E' })}
      />
    </View>
  );
};
const E = ({ navigation }) => {
  return (
    <View>
      <Text>E</Text>
      <Button title={'Next'} onPress={() => navigation.navigate('Second')} />
    </View>
  );
};

const FirstStackScreen = () => {
  return (
    <Stack.Navigator>
      <Stack.Screen name="A" component={A} />
    </Stack.Navigator>
  );
};

const SecondStackScreen = () => {
  return (
    <Stack.Navigator>
      <Stack.Screen name="B" component={B} />
    </Stack.Navigator>
  );
};
const ThirdStackScreen = () => {
  return (
    <Stack.Navigator>
      <Stack.Screen name="C" component={C} />
      <Stack.Screen name="D" component={D} />
      <Stack.Screen name="E" component={E} />
    </Stack.Navigator>
  );
};

export default function App() {
  return (
    <NavigationContainer>
      <Stack.Navigator>
        <Stack.Screen name="First" component={FirstStackScreen} />
        <Stack.Screen name="Second" component={SecondStackScreen} />
        <Stack.Screen name="Third" component={ThirdStackScreen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

Answer 2

Why don't you navigate to directly Screen1 when user click back button?

const onBack = () => {
   navigation.navigate('Screen1');
}