How to create a backdrop component under a Flatlist? - javascript

I'm trying to invoke an action/event if a user pressed under a <FlatList /> component. Here's what I have so far:
. . .
return (
<View style={{ flex: 1 }}>
<FlatList
data={data}
renderItem={renderItem}
/>
<View style={{ flex: 300, width: Dimensions.get('screen').width, height: Dimensions.get('screen').height }}>
<TouchableWithoutFeedback
style={{
borderWidth: 1,
borderColor: 'white',
width: Dimensions.get('screen').width,
height: Dimensions.get('screen').height,
}}
onPress={() => console.log('clicked')}
>
<Text>Backdrop button</Text>
</TouchableWithoutFeedback>
</View>
</View>
);
. . .
And this renders the follow:
It just seems too hacky for me, how can I get this to work better? I don't want to keep adding onto the flex value (in the code snippet, it is flex: 300) and I feel like I don't need Dimensions.

I got it to work like this:
. . .
return (
<View style={{ flex: 1 }}>
<View style={{ justifyContent: 'space-around' }}>
<View style={{ alignSelf: 'stretch' }}>
<FlatList
data={data}
renderItem={renderItem}
/>
</View>
</View>
<View
style={{
flex: 1,
alignItems: 'center',
justifyContent: 'center',
alignSelf: 'stretch',
backgroundColor: 'blue',
}}
>
<TouchableWithoutFeedback
style={{
borderWidth: 1,
borderColor: 'white',
alignSelf: 'stretch',
width: Dimensions.get('screen').width,
height: '100%',
}}
onPress={() => console.log('clicked!')}
>
<Text style={{ color: 'white', fontWeight: 'bold' }}>Click me</Text>
</TouchableWithoutFeedback>
</View>
</View>
)
. . .
Neither sure if it's the best approach or if it will bring me problems in the future, but it seems to work for now. Looks like this:

Related

Segmented Control In Header

im trying to add a segmented tab to my header let me show you an example before i start.
if you've been on the twitter app you know you can swipe through these tabs while these tabs remain on the header, i cant quite find out how i would complete this tho
Some of the code:
<Stack.Screen name="Find" component={Home} options={{
header: () => (
<View style={{ backgroundColor: 'black', paddingBottom: 10 }}>
<View style={{ paddingLeft: 10, flexDirection: 'row', paddingTop: 25, backgroundColor: 'black' }}>
<View style={{}}>
<View style={{ paddingRight: 10, flexDirection: 'row', alignItems: 'center' }}>
<View>
<Image style={{ width: 30, height: 30, borderRadius: 30 }} source={require('../assets/forever.png'} />
</View>
<View style={{ width: '84%', paddingHorizontal: 10 }}>
<Formik
initialValues={{ formData: "" }}
onSubmit={async (values, { setSubmitting }) => {
setSubmitting(true)
await setData({
values
})
console.log(sdata)
setSubmitting(false)
}}
>
{({ handleChange, handleBlur, handleSubmit, values }) => (
<>
<View
style={{
backgroundColor: '#0D0D0D',
padding: 10,
borderRadius: 18,
flexDirection: 'row',
height: 34
}}
>
<View style={{ alignItems: 'center' }}>
<Icon name="search" type="ionicon" size={15} color="grey" />
</View>
<TextInput
autoCorrect={false}
clearButtonMode="always"
placeholderTextColor="grey"
onChangeText={handleChange('formData.form')}
value={values.formData.form}
onBlur={handleBlur('formData')}
placeholder="Search"
style={{ backgroundColor: '#0D0D0D', paddingHorizontal: 20 }}
/>
</View>
</>
)}
</Formik>
</View>
<View style={{ flexDirection: 'row' }}>
<Icon onPress={() => create.current.show()} type="ionicon" size={28} color="white" name="create-outline" />
</View>
</View>
</View>
</View>
<ScrollableTabView style={{}} renderTabBar={() =>
<DefaultTabBar
style={{
borderWidth: 0,
}}
/>
} tabBarUnderlineStyle={{ backgroundColor: "#fff", borderWidth: 1}} tabBarTextStyle={{ color: "#fff" }} tabBarBackgroundColor="#000">
<View tabLabel="Home">
</View>
<Quotes tabLabel="Quotes" />
<View tabLabel="Posts" >
</View>
<View tabLabel="Home" >
</View>
</ScrollableTabView>
</View>
),
}} />
If you need anymore information, just comment and thanks in addvanced

if condition doesnt return wanted results

im trying to check if my cart is empty or not , if its not empty then it returns this view and it s working well :
and if it is empty it should return a text that has "empty is cart" but its not working :
here is my code :
{
this.state.dataCart.map((item, i) => {
if (this.state.dataCart.length != 0) {
return (
<View style={{ flex: 1, }} key={i}>
<View style={{ width: width - 20, margin: 10, backgroundColor: 'transparent', flexDirection: 'row', borderBottomWidth: 2, borderColor: "#cccccc", paddingBottom: 10 }}>
<Image resizeMode={"contain"} style={{ width: width / 3, height: width / 3 }} source={require("../assets/Tacos-M.png")} />
<View style={{ flex: 1, backgroundColor: 'transparent', padding: 10, justifyContent: "space-between" }}>
<View>
<View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
<Text style={{ fontWeight: "bold", fontSize: 20 }}>Tacos {item.Viande}</Text>
<TouchableOpacity onPress={() => this.removeItem(i)}>
<Ionicons name="close-sharp" size={30} color={'#D05A0B'} />
</TouchableOpacity>
</View>
<Text>Sauce:{item.Sauce}</Text>
<Text>Taille:{item.taille}</Text>
<Text>Extra:{item.Extra}</Text>
<Text>Boissons:{item.Boisson}</Text>
<Text>Supplements:{item.Supplements}</Text>
</View>
<View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
<Text style={{ fontWeight: 'bold', fontSize: 20 }}>{item.Price * item.Quantity} DT</Text>
<View style={{ flexDirection: 'row', alignItems: 'center' }}>
<TouchableOpacity onPress={() => this.onChangeQual(i, false)}>
<Ionicons name="remove-circle" size={30} color={'#D05A0B'} />
</TouchableOpacity>
<Text style={{ paddingHorizontal: 8, fontWeight: 'bold' }}>{item.Quantity}</Text>
<TouchableOpacity onPress={() => this.onChangeQual(i, true)}>
<Ionicons name="add-circle" size={30} color={'#D05A0B'} />
</TouchableOpacity>
</View>
</View>
</View>
</View>
</View>
)
} else {
return (
<View style={{ flex: 1, }}>
<Text>Cart is empty !</Text>
</View>
)
}
})
}
here is my log console :
is there any solution ?
If-else statements do not work inside JSX. So, use ternary operator instead.
this.state.dataCart.map((item, i) =>
this.state.dataCart.length != 0 ? (
<View style={{ flex: 1 }} key={i}>
<View
style={{
width: width - 20,
margin: 10,
backgroundColor: "transparent",
flexDirection: "row",
borderBottomWidth: 2,
borderColor: "#cccccc",
paddingBottom: 10,
}}
>
<Image
resizeMode={"contain"}
style={{ width: width / 3, height: width / 3 }}
source={require("../assets/Tacos-M.png")}
/>
<View
style={{
flex: 1,
backgroundColor: "transparent",
padding: 10,
justifyContent: "space-between",
}}
>
<View>
<View
style={{
flexDirection: "row",
justifyContent: "space-between",
}}
>
<Text style={{ fontWeight: "bold", fontSize: 20 }}>
Tacos {item.Viande}
</Text>
<TouchableOpacity onPress={() => this.removeItem(i)}>
<Ionicons name="close-sharp" size={30} color={"#D05A0B"} />
</TouchableOpacity>
</View>
<Text>Sauce:{item.Sauce}</Text>
<Text>Taille:{item.taille}</Text>
<Text>Extra:{item.Extra}</Text>
<Text>Boissons:{item.Boisson}</Text>
<Text>Supplements:{item.Supplements}</Text>
</View>
<View
style={{
flexDirection: "row",
justifyContent: "space-between",
}}
>
<Text style={{ fontWeight: "bold", fontSize: 20 }}>
{item.Price * item.Quantity} DT
</Text>
<View style={{ flexDirection: "row", alignItems: "center" }}>
<TouchableOpacity onPress={() => this.onChangeQual(i, false)}>
<Ionicons name="remove-circle" size={30} color={"#D05A0B"} />
</TouchableOpacity>
<Text style={{ paddingHorizontal: 8, fontWeight: "bold" }}>
{item.Quantity}
</Text>
<TouchableOpacity onPress={() => this.onChangeQual(i, true)}>
<Ionicons name="add-circle" size={30} color={"#D05A0B"} />
</TouchableOpacity>
</View>
</View>
</View>
</View>
</View>
) : (
<View style={{ flex: 1 }}>
<Text>Cart is empty !</Text>
</View>
)
);

FlatList moves/drags in all directions

When I click on my FlatList I can drag and move it in all directions (up/down/right left). Although the list appears to be vertical (maybe because of the styling), the scroll bar still appears horizontally. How can I disable this dragging?
This is how I am using the FlatList:
<FlatList
data={data.me.friends.nodes}
//horizontal={false}
//scrollEnabled={false}
renderItem={({ item }) => (
<FriendItem friend={item} originatorId={data.me.id}/>
)}
keyExtractor={(item) => item.id.toString()}
ListEmptyComponent={NoFriendsContainer}
/>
This is from the FriendItem's return
return (
<View style={styles.item}>
<TouchableOpacity
onPress={() =>
navigation.navigate('FriendDetails')
}>
<Thumbnail
style={styles.thumbnail}
source={{
uri:
'https://cdn4.iconfinder.com/person-512.png',
}}></Thumbnail>
</TouchableOpacity>
<View style={styles.nameContainer}>
<Text style={styles.userName}>{userName}</Text>
</View>
<View style={styles.deleteButtonContainer}>
<Button
rounded
style={styles.deleteButton}
onPress={() => onDeleteFriend(originatorId, friend.id)}>
<Icon name="trash-o" size={moderateScale(20)} color="black" />
</Button>
</View>
</View>
);
};
Styles for FriendItem:
export const styles = StyleSheet.create({
item: {
backgroundColor: 'white',
borderRadius: moderateScale(20),
padding: moderateScale(20),
marginVertical: moderateScale(8),
marginHorizontal: 16,
height: moderateScale(110),
width: moderateScale(360),
justifyContent: 'space-between',
flexDirection: 'row',
},
userName: {
paddingRight: 55,
paddingLeft: 10,
paddingTop: 20,
},
deleteButton: {
backgroundColor: '#31C283',
width: moderateScale(45),
justifyContent: 'center',
},
deleteButtonContainer: {
paddingTop: 12,
marginRight: 2,
},
thumbnail: {
height: 85,
width: 85,
marginLeft: 2,
paddingRight: 0,
position: 'relative',
},
nameContainer: {
flexDirection: 'row',
},
});
I also tried removing the TouchableOpacity but it made no difference.
What you can try. is below :
UPDATE:
<Flatlist
bounces={false}/>
try this here, or add bounces={false} in the top scrollView if its there
Hope it helps. feel free for doubts
This issue happened because of some times you have given a width to the parent view of flat list. like below.
<View style={{width: '90%'}}>
<FlatList/>
</View>
simply add the flatlist to the same width with bounces false.
<View style={{width: '90%'}}>
<FlatList
contentContainerStyle={{width: '90%'}}
bounces={false}
/>
</View>
by adding bounces=false, your flatlist will not be able drag to different directions.

Layout and render a View in a MapView component - React native

Im fairly new to React native. I have created a MapView component on my screen and am trying to add a map key that indicates what each marker color is. I was able to achieve this only to find out that the layout bugs out when I leave and return to that screen
Example
This is what i'm trying to achieve
This is what I keep getting
This is my code
<SafeAreaView style={{ flex: 1, backgroundColor: '#376772' }}>
<View style={{ flex: 0.6 }}>
<MapView
style={{ flex: 1 }}
showsMyLocationButton={true}
showsUserLocation={true}
followsUserLocation={lock}
onTouchStart={() => {
set(false)
}}
onPress={(loc) => {
setLocation(loc.nativeEvent.coordinate)
}}
>
{/* Map key view begins here */}
<View
style={{
alignSelf: 'center',
alignContent: 'center',
backgroundColor: '#202B35',
padding: 10,
paddingHorizontal: 35,
margin: 5,
borderRadius: 5,
alignItems: 'center',
}}
>
<View style={{ flexDirection: 'row' }}>
<Badge
status="error"
containerStyle={{ padding: 5 }}
/>
<Text
style={{
color: '#fff',
fontSize: 16,
marginBottom: 5,
}}
>
New Crossing
</Text>
</View>
<View style={{ flexDirection: 'row' }}>
<Badge
status="primary"
containerStyle={{ padding: 5 }}
/>
<Text style={{ color: '#fff', fontSize: 16 }}>
{'Existing Crossings'}
</Text>
</View>
</View>
<Marker coordinate={location} />
</MapView>
</View>
Any help would be very appreciative. please let me know if I am missing any vital information on this post.
I found out that I must wrap my map key View in a <Fragment/> Component outside of the <MapView> component. I also had to style it with position:"absolute"
Heres My code
<View style={{ flex: 0.6 }}>
<MapView
style={{ flex: 1 }}
showsMyLocationButton={true}
showsUserLocation={true}
followsUserLocation={lock}
onTouchStart={() => {
set(false)
}}
onPress={(loc) => {
setLocation(loc.nativeEvent.coordinate)
}}
>
<Marker coordinate={location} />
</MapView>
<Fragment>
<View
style={{
alignSelf: 'center',
alignContent: 'center',
backgroundColor: '#202B35',
padding: 10,
paddingHorizontal: 35,
margin: 5,
borderRadius: 5,
alignItems: 'center',
position: 'absolute',
}}
>
<View style={{ flexDirection: 'row' }}>
<Badge
status="error"
containerStyle={{ padding: 5 }}
/>
<Text
style={{
color: '#fff',
fontSize: 16,
marginBottom: 5,
}}
>
New Crossing
</Text>
</View>
<View style={{ flexDirection: 'row' }}>
<Badge
status="primary"
containerStyle={{ padding: 5 }}
/>
<Text style={{ color: '#fff', fontSize: 16 }}>
{'Existing Crossings'}
</Text>
</View>
</View>
</Fragment>
</View>

How to display Icon in middle of screen in react native

Here, I am displaying "icon="check-decagram" type="MaterialCommunityIcons" in center, but its just coming in center and 20 padding from top. I have to display it middle of the mobile screen. I tried may be I am doing some wrong .Please correct me .
return(
<ImageBackground source={BG} style={styles.imgBG}>
<ScrollView>
<View>
<Header title={title} icon={icon} navigation={navigation} />
</View>
<View style={{ flexDirection: 'column', backgroundColor: '#ffff',}}>
<View style={{
flexDirection:'column', backgroundColor:'#fff',alignItems:'center',paddingTop:20,justifyContent: 'center'}}>
<IconXL icon="check-decagram" type="MaterialCommunityIcons" style={{ color: 'green' }}/>
</View>
<View style={{
flexDirection:'row', backgroundColor:'#ffff',padding:20,flexWrap:'wrap'}}>
<SmallText textColor="grey" text={`v${updateResponse.updateStatusList.currentAppVersion} `}/>
<SmallText textColor="grey" text={`${updateResponse.updateStatusList.desc}`}/>
</View>
</View>
</ScrollView>
</ImageBackground>
)}
// Thanks
try to add two more property height: '100%' and width: '100%' in superview of icon,
like,
<View style={{flexDirection:'column',height: '100%',width: '100%',backgroundColor:'#fff',alignItems:'center',paddingTop:2,justifyContent: 'center'}}>
<IconXL icon="check-decagram" type="MaterialCommunityIcons" style={{ color:'green' }}/>
</View>
Hope this works for you,
Good luck.
You can try something like.
<View style={{
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: 'blue'
}}>
<Text style={{backgroundColor: 'red'}}>
Your Text
</Text>

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