Essential React Native UI & Interaction Components
July 1, 2025Essential React Native UI & Interaction Components
React Native provides a powerful set of built-in components for creating native mobile apps. Below is a detailed guide to the core UI and interaction components with practical examples and explanations of their importance.
๐ฆ Core UI Components
1. View
The View component is the fundamental building block for layout. It’s like a div in HTML and is used to group other components.
<View style={{ padding: 20 }}>
<Text>Hello World!</Text>
</View>
2. Text
Used to display text in your app. You can style it with font size, color, alignment, etc.
<Text style={{ fontSize: 18, color: 'blue' }}>This is a text</Text>
3. Image
Displays images from local or remote sources.
<Image source={{ uri: 'https://example.com/image.jpg' }} style={{ width: 100, height: 100 }} />
4. ScrollView
Allows scrolling through long content. Useful for vertical layouts that don’t fit the screen.
<ScrollView>
<Text>Content...</Text>
</ScrollView>
5. FlatList
Efficient way to render lists with performance optimizations.
<FlatList
data={[{ key: 'Item 1' }, { key: 'Item 2' }]}
renderItem={({ item }) => <Text>{item.key}</Text>}
/>
6. TextInput
Captures user input like email, password, etc.
<TextInput placeholder="Enter your name" style={{ borderWidth: 1, padding: 10 }} />
7. Button
Triggers actions on press. Simple and native-looking.
<Button title="Click Me" onPress={() => alert('Clicked!')} />
8. Pressable
More flexible touch component with advanced interactions.
<Pressable onPress={() => console.log('Pressed')}>
<Text>Press here</Text>
</Pressable>
9. Modal
Displays content over the rest of the app. Useful for dialogs and popups.
<Modal visible={true} transparent={true}>
<View style={{ marginTop: 100 }}>
<Text>This is a modal</Text>
</View>
</Modal>
๐ฏ Interaction Components
1. Alert
Shows a system dialog with messages and actions.
Alert.alert("Warning", "Are you sure?")
2. BackHandler
Handles Android back button presses.
BackHandler.addEventListener('hardwareBackPress', () => {
// Custom logic
return true;
});
3. KeyboardAvoidingView
Moves UI elements above the keyboard when it appears.
<KeyboardAvoidingView behavior="padding">...</KeyboardAvoidingView>
๐ฑ Animation Components
1. Animated
Creates complex animations for components.
const fadeAnim = useRef(new Animated.Value(0)).current;
Animated.timing(fadeAnim, {
toValue: 1,
duration: 1000,
useNativeDriver: true
}).start();
2. LayoutAnimation
Automatically animates layout changes.
LayoutAnimation.configureNext(LayoutAnimation.Presets.spring);
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