Initial commit

.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+.kotlin/
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo
+
+# generated native folders
+/ios
+/android

App.tsx

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+import React, { useState } from 'react';
+import { NavigationContainer, DefaultTheme } from '@react-navigation/native';
+import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
+import UsersScreen from './screens/UsersScreen';
+import PostsScreen from './screens/PostsScreen';
+import TodosScreen from './screens/TodosScreen';
+import { View, TextInput, StyleSheet } from 'react-native';
+import { GestureHandlerRootView } from 'react-native-gesture-handler';
+
+const Tab = createBottomTabNavigator();
+
+const DarkTheme = {
+  ...DefaultTheme,
+  colors: {
+    ...DefaultTheme.colors,
+    primary: '#ff00ff',
+    background: '#000000',
+    card: '#1a1a1a',
+    text: '#ffffff',
+    border: '#333333',
+  },
+};
+
+export default function App() {
+  const [filter, setFilter] = useState('');
+
+  return (
+    <GestureHandlerRootView style={{ flex: 1 }}>
+      <NavigationContainer theme={DarkTheme}>
+      <View style={styles.container}>
+        <TextInput
+          style={styles.filter}
+          placeholder="Globális szűrő"
+          placeholderTextColor="#999999"
+          value={filter}
+          onChangeText={setFilter}
+        />
+        <Tab.Navigator>
+          <Tab.Screen name="Users">{() => <UsersScreen filter={filter} />}</Tab.Screen>
+          <Tab.Screen name="Posts">{() => <PostsScreen filter={filter} />}</Tab.Screen>
+          <Tab.Screen name="Todos">{() => <TodosScreen filter={filter} />}</Tab.Screen>
+        </Tab.Navigator>
+      </View>
+    </NavigationContainer>
+    </GestureHandlerRootView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, backgroundColor: '#000000' },
+  filter: { padding: 16, borderBottomWidth: 1, borderBottomColor: '#333333', marginTop: 40, backgroundColor: '#1a1a1a', color: '#ffffff' },
+});

app.json

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+{
+  "expo": {
+    "name": "feladat4-dashboard",
+    "slug": "feladat4-dashboard",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "userInterfaceStyle": "light",
+    "newArchEnabled": true,
+    "splash": {
+      "image": "./assets/splash-icon.png",
+      "resizeMode": "contain",
+      "backgroundColor": "#ffffff"
+    },
+    "ios": {
+      "supportsTablet": true
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/adaptive-icon.png",
+        "backgroundColor": "#ffffff"
+      }
+    },
+    "web": {
+      "favicon": "./assets/favicon.png"
+    }
+  }
+}

index.ts

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+import { registerRootComponent } from 'expo';
+
+import App from './App';
+
+// registerRootComponent calls AppRegistry.registerComponent('main', () => App);
+// It also ensures that whether you load the app in Expo Go or in a native build,
+// the environment is set up appropriately
+registerRootComponent(App);

package.json

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+{
+  "name": "feladat4-dashboard",
+  "version": "1.0.0",
+  "main": "index.ts",
+  "scripts": {
+    "start": "expo start",
+    "android": "expo start --android",
+    "ios": "expo start --ios",
+    "web": "expo start --web"
+  },
+  "dependencies": {
+    "@react-navigation/bottom-tabs": "^7.14.0",
+    "@react-navigation/native": "^7.1.28",
+    "expo": "~54.0.33",
+    "expo-status-bar": "~3.0.9",
+    "react": "19.1.0",
+    "react-native": "0.81.5",
+    "react-native-gesture-handler": "~2.28.0",
+    "react-native-safe-area-context": "~5.6.0",
+    "react-native-screens": "~4.16.0"
+  },
+  "devDependencies": {
+    "@types/react": "~19.1.0",
+    "typescript": "~5.9.2"
+  },
+  "private": true
+}

screens/PostsScreen.tsx

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+import React, { useEffect, useState } from 'react';
+import { View, Text, FlatList, StyleSheet } from 'react-native';
+import { apiService } from '../services/api';
+
+export default function PostsScreen({ filter }: { filter: string }) {
+  const [posts, setPosts] = useState([]);
+
+  useEffect(() => {
+    apiService.getPosts().then(setPosts);
+  }, []);
+
+  const filtered = posts.filter((p: any) => p.title.toLowerCase().includes(filter.toLowerCase()));
+
+  return (
+    <View style={styles.container}>
+      <FlatList
+        data={filtered}
+        keyExtractor={(item: any) => item.id.toString()}
+        renderItem={({ item }: any) => (
+          <View style={styles.item}>
+            <Text style={styles.title}>{item.title}</Text>
+            <Text>{item.body}</Text>
+          </View>
+        )}
+      />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16 },
+  item: { padding: 16, borderBottomWidth: 1 },
+  title: { fontWeight: 'bold' },
+});

screens/TodosScreen.tsx

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+import React, { useEffect, useState } from 'react';
+import { View, Text, FlatList, StyleSheet } from 'react-native';
+import { apiService } from '../services/api';
+
+export default function TodosScreen({ filter }: { filter: string }) {
+  const [todos, setTodos] = useState([]);
+
+  useEffect(() => {
+    apiService.getTodos().then(setTodos);
+  }, []);
+
+  const filtered = todos.filter((t: any) => t.title.toLowerCase().includes(filter.toLowerCase()));
+
+  return (
+    <View style={styles.container}>
+      <FlatList
+        data={filtered}
+        keyExtractor={(item: any) => item.id.toString()}
+        renderItem={({ item }: any) => (
+          <View style={styles.item}>
+            <Text>{item.completed ? '✅' : '⬜'} {item.title}</Text>
+          </View>
+        )}
+      />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16 },
+  item: { padding: 16, borderBottomWidth: 1 },
+});

screens/UsersScreen.tsx

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+import React, { useEffect, useState } from 'react';
+import { View, Text, FlatList, StyleSheet } from 'react-native';
+import { apiService } from '../services/api';
+
+export default function UsersScreen({ filter }: { filter: string }) {
+  const [users, setUsers] = useState([]);
+
+  useEffect(() => {
+    apiService.getUsers().then(setUsers);
+  }, []);
+
+  const filtered = users.filter((u: any) => u.name.toLowerCase().includes(filter.toLowerCase()));
+
+  return (
+    <View style={styles.container}>
+      <FlatList
+        data={filtered}
+        keyExtractor={(item: any) => item.id.toString()}
+        renderItem={({ item }: any) => (
+          <View style={styles.item}>
+            <Text style={styles.name}>{item.name}</Text>
+            <Text>{item.email}</Text>
+          </View>
+        )}
+      />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { flex: 1, padding: 16 },
+  item: { padding: 16, borderBottomWidth: 1 },
+  name: { fontWeight: 'bold' },
+});

services/api.ts

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+export const apiService = {
+  getUsers: async () => {
+    const res = await fetch('https://jsonplaceholder.typicode.com/users');
+    return res.json();
+  },
+  getPosts: async () => {
+    const res = await fetch('https://jsonplaceholder.typicode.com/posts');
+    return res.json();
+  },
+  getTodos: async () => {
+    const res = await fetch('https://jsonplaceholder.typicode.com/todos');
+    return res.json();
+  },
+};

tsconfig.json

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+{
+  "extends": "expo/tsconfig.base",
+  "compilerOptions": {
+    "strict": true
+  }
+}