TabBar Navigator and Proper adding posts and comments

Views/Profile.js

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+import { StatusBar } from 'expo-status-bar';
+import React, { useState, useEffect } from 'react';
+import { View, ActivityIndicator, StyleSheet, SafeAreaView, FlatList } from 'react-native';
+import API from './../API.js';
+import Post from './../components/Post.js';
+import { Provider as PaperProvider } from 'react-native-paper';
+import MaterialIcons from 'react-native-vector-icons/MaterialIcons';
+import NewPost from "./../components/NewPost.js";
+
+
+
+let Profile = ({ navigation, route }) => {
+    let [Me, setMeProfile] = useState({});
+    let [Posts, setPosts] = useState([]);
+    useEffect(async () => {
+        setPosts([]);
+        let r = await API.getMe();
+        setMeProfile(r);
+        if (route.params && route.params.profileid) {
+            API.getPosts(route.params.profileid).then((data) => {
+                setPosts(data);
+            });
+        } else {
+            navigation.navigate('Feed')
+        }
+    }, [route.params]);
+    const renderPost = (({ item }) => {
+        return (<Post post={item} viewer={Me} />);
+    });
+
+    return (
+        <PaperProvider settings={{
+            icon: props => <MaterialIcons {...props} />,
+        }}>
+            <SafeAreaView style={styles.container}>
+                <View>
+                    {Posts.length === 0 && <ActivityIndicator />}
+                    {Posts.length !== 0 &&
+                        <FlatList
+                            data={Posts}
+                            renderItem={renderPost}
+                            keyExtractor={item => item._id || item.createdAt}
+                            ListHeaderComponent={<NewPost newPostCB={(newPost) => setPosts([newPost, ...Posts])} />}
+                        />
+                    }
+                </View>
+                <StatusBar style="auto" />
+            </SafeAreaView>
+        </PaperProvider>
+    );
+}
+
+export default Profile;
+
+const styles = StyleSheet.create({
+    container: {
+        flex: 1,
+        alignItems: 'center',
+        backgroundColor: "#edf2f7",
+    },
+});