justifyContent not applying in View React Native

Question

For some reason in this view the justify Content tag does not apply in my view ? I have tried applying it in the modalScreen view but that does not work either. Any ideas ?

function BottomPopup() {
  return (
    <View style={styles.modalScreen}>
      <View style={styles.topbar}>
        <MaterialCommunityIcons name="arrow-left" size={24} color="black" />
        <Text>Create Post</Text>
        <MaterialCommunityIcons name="content-save" size={24} color="black" />
      </View>
      <View>
        <Text>hey</Text>
        <Text>hey</Text>
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  modalScreen: {
    alignItems: "center",
  },
  topbar: {
    display: "flex",
    flexDirection: "row",
    justifyContent: "space-around",
  },
});

Answer 1

在 modalScreen 样式中添加flex:1 ，如Snack.IO

Answer 2

 import { Dimensions } from 'react-native'; const { width, height } = Dimensions.get('window'); const styles = StyleSheet.create({ modalScreen: { flex:1, alignItems: "center", backgroundColor: "yellow", }, topbar: { width: width, flexDirection: "row", justifyContent: "space-around", backgroundColor: "green", }, });

Answer 3

我不得不添加宽度：“100%”然后它就起作用了