My code:

import { TouchableOpacity, StyleSheet, Text, View } from 'react-native'
import React from 'react'
import { auth } from '../firebase'
import { useNavigation } from '@react-navigation/core'
import { signOut } from 'firebase/auth'
import DropDownPicker from 'react-native-dropdown-picker'

const HomeScreen = () => {

  const navigation = useNavigation()
  const handleSignOut = async () =>{
    try{
      await signOut(auth)
      console.log("Signed out successfully")
      navigation.replace("Login")
    }catch (error) {
      console.log({error});
   }
  }
  return (
    <View style = {styles.container}>
      <Text>Welcome {auth.currentUser?.email}</Text>
      <Text></Text>
      <Text>What cusine would you like to eat today?</Text>
      <DropDownPicker
          items={[
              {label: 'English', value: 'en'},
              {label: 'Deutsch', value: 'de'},
              {label: 'French', value: 'fr'},
          ]}
          defaultIndex={0}
          containerStyle={{height: 40}}
          onChangeItem={item => console.log(item.label, item.value)}
      />
      <TouchableOpacity
      onPress={handleSignOut}
        style = {styles.button}
      >
        <Text style = {styles.buttonText}>Sign Out</Text>
      </TouchableOpacity>
    </View>
    
  )
}

I am using

But I got nothing on my screen though. There is no error or warning from the expo app or my terminal My screen looks like:

Or am I doing something wrong here? I have done the import which is import DropDownPicker from 'react-native-dropdown-picker' and before the import, I have done the installation in my root folder which is npm install react-native-dropdown-picker from

CodePudding user response：

Try it plz. Hope it would work.

import DropDownPicker from 'react-native-dropdown-picker';

function HomeScreen() {
  const [open, setOpen] = useState(false);
  const [value, setValue] = useState(null);
  const [items, setItems] = useState([
             {label: 'English', value: 'en'},                  
             {label: 'Deutsch', value: 'de'},
             {label: 'French', value: 'fr'},
               ]);

  return (
    <DropDownPicker
      open={open}
      value={value}
      items={items}
      setOpen={setOpen}
      setValue={setValue}
      setItems={setItems}
    />
  );
}

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