React Native Gesture Image Viewer
Guide
1.x
Guide
English
1.x

Basic Usage

GestureViewer

import { FlatList, Image, Modal } from 'react-native';
import { GestureViewer } from 'react-native-gesture-image-viewer';

function App() {
  const images = [...];
  const [visible, setVisible] = useState(false);

  const renderImage = useCallback((imageUrl: string) => {
    return <Image source={{ uri: imageUrl }} style={{ width: '100%', height: '100%' }} resizeMode="contain" />;
  }, []);

  return (
    <Modal visible={visible} onRequestClose={() => setVisible(false)}>
      <GestureViewer
        data={images}
        renderItem={renderImage}
        ListComponent={FlatList}
        onDismiss={() => setVisible(false)}
      />
    </Modal>
  );
}

useGestureViewerController

You can programmatically control the GestureViewer using the useGestureViewerController hook.

import { GestureViewer, useGestureViewerController } from 'react-native-gesture-image-viewer';

function App() {
  const {
    goToIndex,
    goToPrevious,
    goToNext,
    currentIndex,
    totalCount,
    zoomIn,
    zoomOut,
    resetZoom,
    rotate
  } = useGestureViewerController();

  return (
    <View>
      <GestureViewer
        data={images}
        renderItem={renderImage}
      />
      {/* Navigation Controls */}
      <View>
        <Button title="Prev" onPress={goToPrevious} />
        <Button title="Jump to index 2" onPress={() => goToIndex(2)} />
        <Button title="Next" onPress={goToNext} />
        <Text>{`${currentIndex + 1} / ${totalCount}`}</Text>
      </View>
    </View>
  );
}

useGestureViewerEvent

You can subscribe to specific events from GestureViewer using the useGestureViewerEvent hook. This allows you to respond to real-time gesture changes like zoom and rotation.

import { GestureViewer, useGestureViewerEvent } from 'react-native-gesture-image-viewer';

function App() {
  useGestureViewerEvent('zoomChange', (data) => {
    console.log(`Zoom changed from ${data.previousScale} to ${data.scale}`);
  });

  useGestureViewerEvent('rotationChange', (data) => {
    console.log(`Rotation changed from ${data.previousRotation}° to ${data.rotation}°`);
  });

  return (
    <GestureViewer
      data={images}
      renderItem={renderImage}
    />
  );
}

GestureTrigger

GestureTrigger supports smooth trigger-based animations that create seamless transitions from trigger elements (like thumbnails) to the full modal view. This feature enhances user experience by maintaining visual continuity between the trigger and modal content.

import { GestureTrigger, GestureViewer } from 'react-native-gesture-image-viewer';

function App() {
  const [visible, setVisible] = useState(false);

  return (
    <View>
      <GestureTrigger onPress={() => setVisible(true)}>
        <Pressable>
          <Image source={{ uri }} />
        </Pressable>
      </GestureTrigger>
      <GestureViewer
        data={images}
        renderItem={renderImage}
        onDismiss={() => setVisible(false)}
      />
    </View>
  );
}