I have created one custom Animated bottom sheet. User can move the bottom sheet scroll up and down. Inside my bottom sheet, I have used flatList where I fetched the data and render the items as a card. Up-till now everything works as expected but I had an issue Flatlist scrolling. Inside the bottom sheet the Flat-list does not scroll. I have made hard coded height value 2000px, which is really practice and also FlatList's contentContainerStyle added hard coded paddingBottom 2000(also another bad practice). I want to scroll the FlatList based on Flex-box. I don't know how to fix this issue.
I share my code on expo-snacks
This is my all code
import React, { useState, useEffect } from "react";
import {
StyleSheet,
Text,
View,
Dimensions,
useWindowDimensions,
SafeAreaView,
RefreshControl,
Animated,
Button,
FlatList,
} from "react-native";
import MapView from "react-native-maps";
import styled from "styled-components";
import {
PanGestureHandler,
PanGestureHandlerGestureEvent,
TouchableOpacity,
} from "react-native-gesture-handler";
const { width } = Dimensions.get("screen");
const initialRegion = {
latitudeDelta: 15,
longitudeDelta: 15,
latitude: 60.1098678,
longitude: 24.7385084,
};
const api =
"http://open-api.myhelsinki.fi/v1/events/?distance_filter=60.1699%2C24.9384%2C10&language_filter=en&limit=50";
export default function App() {
const { height } = useWindowDimensions();
const [translateY] = useState(new Animated.Value(0));
const [event, setEvent] = useState([]);
const [loading, setLoading] = useState(false);
// This is Fetch Dtata
const fetchData = async () => {
try {
setLoading(true);
const response = await fetch(api);
const data = await response.json();
setEvent(data.data);
setLoading(false);
} catch (error) {
console.log("erro", error);
}
};
useEffect(() => {
fetchData();
}, []);
// Animation logic
const bringUpActionSheet = () => {
Animated.timing(translateY, {
toValue: 0,
duration: 500,
useNativeDriver: true,
}).start();
};
const closeDownBottomSheet = () => {
Animated.timing(translateY, {
toValue: 1,
duration: 500,
useNativeDriver: true,
}).start();
};
const bottomSheetIntropolate = translateY.interpolate({
inputRange: [0, 1],
outputRange: [-height / 2.4 + 50, 0],
});
const animatedStyle = {
transform: [
{
translateY: bottomSheetIntropolate,
},
],
};
const gestureHandler = (e: PanGestureHandlerGestureEvent) => {
if (e.nativeEvent.translationY > 0) {
closeDownBottomSheet();
} else if (e.nativeEvent.translationY < 0) {
bringUpActionSheet();
}
};
return (
<>
<MapView style={styles.mapStyle} initialRegion={initialRegion} />
<PanGestureHandler onGestureEvent={gestureHandler}>
<Animated.View
style={[styles.container, { top: height * 0.7 }, animatedStyle]}
>
<SafeAreaView style={styles.wrapper}>
<ContentConatiner>
<Title>I am scroll sheet</Title>
<HeroFlatList
data={event}
refreshControl={
<RefreshControl
enabled={true}
refreshing={loading}
onRefresh={fetchData}
/>
}
keyExtractor={(_, index) => index.toString()}
renderItem={({ item, index }) => {
const image = item?.description.images.map((img) => img.url);
const startDate = item?.event_dates?.starting_day;
return (
<EventContainer key={index}>
<EventImage
source={{
uri:
image[0] ||
"https://res.cloudinary.com/drewzxzgc/image/upload/v1631085536/zma1beozwbdc8zqwfhdu.jpg",
}}
/>
<DescriptionContainer>
<Title ellipsizeMode="tail" numberOfLines={1}>
{item?.name?.en}
</Title>
<DescriptionText>
{item?.description?.intro ||
"No description available"}
</DescriptionText>
<DateText>{startDate}</DateText>
</DescriptionContainer>
</EventContainer>
);
}}
/>
</ContentConatiner>
</SafeAreaView>
</Animated.View>
</PanGestureHandler>
</>
);
}
const styles = StyleSheet.create({
container: {
position: "absolute",
top: 0,
left: 0,
right: 0,
backgroundColor: "white",
shadowColor: "black",
shadowOffset: {
height: -6,
width: 0,
},
shadowOpacity: 0.1,
shadowRadius: 5,
borderTopEndRadius: 15,
borderTopLeftRadius: 15,
},
mapStyle: {
width: width,
height: 800,
},
});
const HeroFlatList = styled(FlatList).attrs({
contentContainerStyle: {
padding: 14,
flexGrow: 1, // IT DOES NOT GROW
paddingBottom: 2000, // BAD PRACTICE
},
height: 2000 /// BAD PRACTICE
})``;
const ContentConatiner = styled.View`
flex: 1;
padding: 20px;
background-color: #fff;
`;
const Title = styled.Text`
font-size: 16px;
font-weight: 700;
margin-bottom: 5px;
`;
const DescriptionText = styled(Title)`
font-size: 14px;
opacity: 0.7;
`;
const DateText = styled(Title)`
font-size: 14px;
opacity: 0.8;
color: #0099cc;
`;
const EventImage = styled.Image`
width: 70px;
height: 70px;
border-radius: 70px;
margin-right: 20px;
`;
const DescriptionContainer = styled.View`
width: 200px;
`;
const EventContainer = styled(Animated.View)`
flex-direction: row;
padding: 20px;
margin-bottom: 10px;
border-radius: 20px;
background-color: rgba(255, 255, 255, 0.8);
shadow-color: #000;
shadow-opacity: 0.3;
shadow-radius: 20px;
shadow-offset: 0 10px;
`;
Finally I found the solution what I wanted. Thank you Stack-overflow community. Without your help I could not able to do that.
import React, { useState, useEffect } from "react";
import {
StyleSheet,
Text,
View,
Dimensions,
useWindowDimensions,
SafeAreaView,
RefreshControl,
Animated,
Platform
} from "react-native";
import MapView from "react-native-maps";
import styled from "styled-components";
import {
PanGestureHandler,
PanGestureHandlerGestureEvent,
TouchableOpacity,
FlatList
} from "react-native-gesture-handler";
const { width } = Dimensions.get("screen");
const IPHONE_DEVICE_START_HEIGHT = Platform.OS === 'ios' ? 0.4 : 0.6;
const initialRegion = {
latitudeDelta: 15,
longitudeDelta: 15,
latitude: 60.1098678,
longitude: 24.7385084,
};
const api =
"http://open-api.myhelsinki.fi/v1/events/?distance_filter=60.1699%2C24.9384%2C10&language_filter=en&limit=50";
export default function App() {
const { height } = useWindowDimensions();
const [translateY] = useState(new Animated.Value(0));
const [event, setEvent] = useState([]);
const [loading, setLoading] = useState(false);
// This is Fetch Dtata
const fetchData = async () => {
try {
setLoading(true);
const response = await fetch(api);
const data = await response.json();
setEvent(data.data);
setLoading(false);
} catch (error) {
console.log("erro", error);
}
};
useEffect(() => {
fetchData();
}, []);
// Animation logic
const bringUpActionSheet = () => {
Animated.timing(translateY, {
toValue: 0,
duration: 500,
useNativeDriver: false,
}).start();
};
const closeDownBottomSheet = () => {
Animated.timing(translateY, {
toValue: 1,
duration: 500,
useNativeDriver: false,
}).start();
};
const bottomSheetIntropolate = translateY.interpolate({
inputRange: [0, 1],
outputRange: [
height * 0.5 - height / 2.4 + IPHONE_DEVICE_START_HEIGHT,
height * IPHONE_DEVICE_START_HEIGHT,
],
extrapolate: 'clamp',
});
const animatedStyle = {
top: bottomSheetIntropolate,
bottom: 0,
};
const gestureHandler = (e: PanGestureHandlerGestureEvent) => {
if (e.nativeEvent.translationY > 0) {
closeDownBottomSheet();
} else if (e.nativeEvent.translationY < 0) {
bringUpActionSheet();
}
};
return (
<>
<MapView style={styles.mapStyle} initialRegion={initialRegion} />
<PanGestureHandler onGestureEvent={gestureHandler}>
<Animated.View
style={[styles.container, { top: height * 0.7 }, animatedStyle]}
>
<Title>I am scroll sheet</Title>
<HeroFlatList
data={event}
refreshControl={
<RefreshControl
enabled={true}
refreshing={loading}
onRefresh={fetchData}
/>
}
keyExtractor={(_, index) => index.toString()}
renderItem={({ item, index }) => {
const image = item?.description.images.map((img) => img.url);
const startDate = item?.event_dates?.starting_day;
return (
<EventContainer key={index}>
<EventImage
source={{
uri:
image[0] ||
"https://res.cloudinary.com/drewzxzgc/image/upload/v1631085536/zma1beozwbdc8zqwfhdu.jpg",
}}
/>
<DescriptionContainer>
<Title ellipsizeMode="tail" numberOfLines={1}>
{item?.name?.en}
</Title>
<DescriptionText>
{item?.description?.intro ||
"No description available"}
</DescriptionText>
<DateText>{startDate}</DateText>
</DescriptionContainer>
</EventContainer>
);
}}
/>
</Animated.View>
</PanGestureHandler>
</>
);
}
const styles = StyleSheet.create({
container: {
position: "absolute",
top: 0,
left: 0,
right: 0,
backgroundColor: "white",
shadowColor: "black",
shadowOffset: {
height: -6,
width: 0,
},
shadowOpacity: 0.1,
shadowRadius: 5,
borderTopEndRadius: 15,
borderTopLeftRadius: 15,
},
mapStyle: {
width: width,
height: 800,
},
});
const HeroFlatList = styled(FlatList).attrs({
contentContainerStyle: {
flexGrow:1
},
})``;
const Title = styled.Text`
font-size: 16px;
font-weight: 700;
margin-bottom: 5px;
`;
const DescriptionText = styled(Title)`
font-size: 14px;
opacity: 0.7;
`;
const DateText = styled(Title)`
font-size: 14px;
opacity: 0.8;
color: #0099cc;
`;
const EventImage = styled.Image`
width: 70px;
height: 70px;
border-radius: 70px;
margin-right: 20px;
`;
const DescriptionContainer = styled.View`
width: 200px;
`;
const EventContainer = styled(Animated.View)`
flex-direction: row;
padding: 20px;
margin-bottom: 10px;
border-radius: 20px;
background-color: rgba(255, 255, 255, 0.8);
shadow-color: #000;
shadow-opacity: 0.3;
shadow-radius: 20px;
shadow-offset: 0 10px;
`;