Looking for ideas on how to implement a Netflix.com like slider in react native.
If I use a ScrollView, user can scroll all the way to right with one single momentum scroll. But Netflix slider scrolls only 6 (itemsPerRow) items at a time. So, ScrollView may not be ideal. I will use general View instead of ScrollView.
<View style={styles.slider}>
<SliderControl pressHandler={loadPrevItems}>
<Text>{'<'}</Text>
</SliderControl>
<Animated.View
style={
{
transform: [{
translateX: interpolatedAnimation,
}],
}
}
>
{renderContent()}
</Animated.View>
<SliderControl pressHandler={loadNextItems}>
<Text>{'>'}</Text>
</SliderControl>
</View>
The slider controls are tied to onPress event handlers. The handlers adjusts the animation value as needed. When the slider is re-rendered, it is animated (slide to left/right) and shows next/prev items. I figured that they are using transform translateX animation for this. This is easily achievable with Animated API
const animation = useRef(new Animated.Value(0)).current;
const interpolatedAnimation = useMemo(() => {
return animation.interpolate({
inputRange: [0, 100],
outputRange: [0, sliderWidth],
});
}, [animation, sliderWidth]);
useEffect(() => {
Animated.timing(animation, {
toValue: moveDirection === 'right ? -100 : 100,
duration: 750,
useNativeDriver: true,
}).start();
});
Along with the Next/Prev button, Netflix slider also supports the trackpad scroll events. If we scroll slightly, the slider doesn't move at all. But we do a momentum scroll, it slides exactly 6 (itemsPerRow) items.
A general View doesn't support scroll event handlers to listen to trackpad scroll action. Not sure how I can achieve this part
ScrollView - lot of unwanted scrolling
View - No support for scroll event listener
Any ideas?
