React Native TouchableHighlight not working with Sectionlist - react-native

I've got a SectionList, and for every row in the list I want to be able to detect a click event.
renderList() {
if (this.state.searching) {
return (
<SectionList
sections={this.state.data}
renderSectionHeader={this.props.renderSectionHeader}
renderItem={this.props.renderItem}
/>
);
}
return null;
}
render() {
return (
<View style={styles.container}>
<Animated.View
style={{ opacity: 1 - this.state.backgroundColor }}
pointerEvents={this.state.searching ? 'none' : undefined}
>
{this.props.children}
</Animated.View>
<Animated.View
style={[
styles.backgroundColorView,
{ opacity: this.state.backgroundColor },
]}
/>
<Animated.View
style={[styles.searchResults, { top: this.state.yPos }]}
>
<TextInput
ref={(input) => { this.searchBar = input; }}
style={styles.textInput}
value={this.props.query}
onChangeText={this.onChangeText}
maxLength={100}
placeholder={this.props.placeholder}
onFocus={this.onFocus}
onBlur={this.onUnSearch}
/>
{this.renderList()}
</Animated.View>
</View>
);
For my renderItem method, I'm passing in the following PureComponent, which is just a Text contained in a TouchableHighlight.
class SubjectSearchItem extends React.PureComponent {
render() {
const item = this.props.item;
return (
<TouchableHighlight
onPress={() => console.log(item)}
>
<View style={{
marginHorizontal: 20,
marginVertical: 10,
}}
>
<Text>{`${item.item.long_name} (${item.item.short_name})`}</Text>
</View>
</TouchableHighlight>
);
}
}
and here's the renderItem prop I'm passing in
const renderItem = item => (
<SubjectSearchItem
item={item}
/>
);
The problem is, no click events are being detected. The row isn't getting highlighted, and the onPress isn't being fired. Any ideas?
Note: seems like this has been an issue for a little while

Related

Correct way to use memo in Flatlist react native

Good evening everyone .
I have created the following Flatlist :
<View style={{ flex: 1 }}>
<FlatList
ListFooterComponent={
loadMore && page < pageMax ? (
<ActivityIndicator color={Colors.grey40} />
) : (
<View />
)
}
ListFooterComponentStyle={{ height: 200 }}
contentContainerStyle={styles.listExercise}
keyExtractor={() => uuid.v4()}
data={exercises}
renderItem={renderItemRE}
removeClippedSubviews={true}
onEndReached={() => {
setOnEndReachedCalledDuringMomentum(true);
}}
onMomentumScrollEnd={loadMoreFc}
onEndReachedThreshold={0.3}
ListEmptyComponent={
<Text contentW B18>
Nessuna Esercizio presente
</Text>
}
/>
</View>
This is renderItem function
const renderItemRE = ({ item }) => {
return (
<RenderItemRE
selectables={route.params?.selectables}
item={item}
navigation={navigation}
/>
);
};
And finally this is my component RenderItemRE
const RenderItemRE = ({ item, navigation, selectables }) => {
return (
<View style={styles.globalContainer}>
<TouchableOpacity
style={styles.touchable}
onPress={() => {
navigation.navigate(Routes.InfoEsercizio, {
id_ex: item.id,
nomeEx: item.nome,
});
}}
>
<View style={styles.container}>
<Image
indicator={Progress}
style={styles.img}
source={{
uri: item.galleria
? item.galleria[0]
? item.galleria[0]
: "logo"
: ApiConstants.DEFAULT_IMAGE,
}}
/>
<Text
style={[
customtext(DYNAMIC_FONTS_SIZE.FONT_SIZE_BIG).regular,
styles.nameStyle,
]}
>
{item.nome}
</Text>
</View>
</TouchableOpacity>
</View>
);
};
function arePropsEqual(prevProps, nextProps) {
return nextProps.item.id === prevProps.item.id;
}
export default memo(RenderItemRE, arePropsEqual);
This is a correct way to use memo in react native ? Or am I doing something wrong? I'm noticing that when the list gets bigger the rendering slows down. I was wondering what was the correct way to optimize. Thank you in advance

unable to print console.log in button react-native

i have created a custom button component for reuseability here is my button code
export default function AppButton({ title, color = "", marginVertical = 0 }) {
return (
<TouchableHighlight
style={[
styles.button,
{ backgroundColor: colors[color], marginVertical: marginVertical }]}
>
<Text style={styles.text}>{title}</Text>
</TouchableHighlight>
);
}
here is my button in which I want to print console .log
<AppButton
title="login"
onPress={() => console.log("email and password recieved")}
/>
Try this, you need to pass the onpress function as props to touchable highlight.
export default function AppButton({ title, color = "", marginVertical = 0 }) {
return (
<TouchableHighlight
onPress={onClick}
style={[
styles.button,
{ backgroundColor: colors[color], marginVertical: marginVertical },
]}
>
<Text style={styles.text}>{title}</Text>
</TouchableHighlight>
);
}
<AppButton
title="login"
onClick={() => console.log("email and password recieved")}
/>
More details can be found in the docs: https://reactnative.dev/docs/touchablehighlight

passing data into a modal

I'm trying to pass some data from container to modal, and i've done this. it got error undefined is not an object evaluating (evaluating _this.props.status) is there anything i did worng? what should i call in props
these are my codes
container.js
buildPanel(index, item) {
let panel = [];
let keys = DBkeys['Requests'].MyRequest;
let status = item[keys['status']];
panel.push(<View style={{ position: 'absolute', right: 0, bottom: 0, padding: normalize(5), alignItems: 'center' }} key={'status'}>
<TouchableOpacity onPress={this.handleShowModal()}>
<Icon name={img.itemStatus[status].name} type={img.itemStatus[status].type} color={img.itemStatus[status].color} size={normalize(38)} />
</TouchableOpacity>
</View>);
return panel;
}
<View style={[styles.panelContainer, status === 'success' ? {} : { backgroundColor: color.white }]}>
<FlatList
showsVerticalScrollIndicator={false}
progressViewOffset={-10}
refreshing={this.state.refreshing}
onRefresh={this.onRefresh.bind(this)}
onMomentumScrollEnd={(event) => event.nativeEvent.contentOffset.y === 0 ? this.onRefresh() : null}
data={content}
renderItem={({ item }) => item}
keyExtractor={(item, key) => key.toString()}
/>
</View>
<IconModal visible={this.state.modalVisible} close={this.handleDismissModal} status='test' desc='test' />
IconModal.js
const IconModal = (props) => {
return(
<Modal
isVisible={props.visible}
onBackdropPress={props.close}
>
<View style={styles.dialogBox}>
<View style={styles.icon}>
<Icon></Icon>
</View>
<View style={styles.text}>
<Text style={styles.status}>{this.props.status}</Text>
<Text>{this.props.desc}</Text>
</View>
<TouchableOpacity onPress={props.close}>
<View>
<Text style={styles.buttonText}>GOT IT</Text>
</View>
</TouchableOpacity>
</View>
</Modal>
)
}
IconModal.propTypes ={
visible: PropTypes.bool.isRequired,
close: PropTypes.func,
}
Use double quotes while passing string to the component. like status="test" desc="test" instead of status='test' desc='test' . and instead of this.props.status use props.status. same with this.props.desc
Remove the this keyword. It should be just props.status and props.desc

How to use if else condition inside nested map function in react-native?

I am making a react-native app that has a custom view like a grid view. All the cells of the view have same size except one. I want to give condition for the cell to have double the size from others.
I am making the view through an array using map function. Map function is not taking if statement. How should I use it?
// Buttons Array
buttons = [['1', '2', '3'],
['a', 'b', 'c'],
['q', 'w', 'e'],
['+', '-', '*'],
]
// '-' has double size...
import React, { Component } from 'react';
import {
View,
Text,
TouchableNativeFeedback
} from 'react-native';
//Styles
import styles from './styles';
export default class NumberButtons extends Component {
//This will call the bound function from its parent component
//to handle button press action/event
_handleOnPress = (value) => {
requestAnimationFrame(() => {
this.props.onBtnPress(value);
});
}
render() {
return (
<View style={styles.container}>
{
this.props.buttons.map((row, index) => (
<View key={index} style={styles.contRow}>
{
row.map((col,index) => (
//**** Here I want to use if else for row and column ***//
<TouchableNativeFeedback
key={index}
onPress={() => this._handleOnPress(col)}
background={TouchableNativeFeedback.SelectableBackground()}>
<View style={styles.buttonContainer}>
<Text style={styles.text}>{col}</Text>
</View>
</TouchableNativeFeedback>
))
}
</View>
))
}
</View>
);
}
}
You can render conditional views like this
<View style={styles.container}>
{this.state.buttons.map((row, index) => {
const myRow = row
console.log("myRow",myRow)
return (
<View key={index} style={styles.contRow}>
{
row.map((col,index) => {
if(col != 3 && myRow != null ){
return (
<TouchableNativeFeedback
key={index}
onPress={() => this._handleOnPress(col)}
background={TouchableNativeFeedback.SelectableBackground()}>
<View style={styles.buttonContainer}>
<Text style={styles.text}>{col}</Text>
</View>
</TouchableNativeFeedback>
)
}
else {
return (
<TouchableNativeFeedback
key={index}
onPress={() => this._handleOnPress(col)}
background={TouchableNativeFeedback.SelectableBackground()}>
<View style={styles.buttonContainer}>
<Text style={{backgroundColor:'#78909C'}}>{col}</Text>
</View>
</TouchableNativeFeedback>
)
}
})
}
</View>
)})
}
</View>
Here is the sample code how you can insert if and else in the nested map function.
this.props.availableEvents.map((item, i) => {
if (i < this.state.imageIndex) {
return null
} else if (i === this.state.imageIndex) {
return (
<Animated.View
{...this.imagePanResponder.panHandlers}
key={i}
style={[this.rotateAndTranslate, styles.cardContainer]}
>
<View style={{ width: '100%', height: '100%' }}>
</View>
</Animated.View>
)
} else {
return (
<Animated.View
key={i}
style={styles.cardContainer}>
<View style={{ width: '100%', height: '100%' }}>
</View>
</Animated.View>
)
}
}).reverse();
};

Set a TouchableHighlight near CustomDrawer with React Native

I want to set my simple TouchableHighlight just near my CustomDrawer but i can't find how to do it . Here is the code .
class App extends Component {
render() {
return (
<View style={{ flex: 1, flexDirection: 'row',marginTop: (Platform.OS
=== "ios") ? 20 : 0 }} >
<View style={styles.container}>
<TouchableHighlight onPress={this._onPressButton}>
<Image
style={styles.button}
source={require('./camera.png')}
/>
</TouchableHighlight>
</View>
<CustomDrawer
content={<NavigationMenu />}
ref="drawerSideMenu"
onClose={() => { this.props.dispatch(navigationMenuStatus(false)); }}
onOpen={() => { this.props.dispatch(navigationMenuStatus(true)) }}>
<HeaderBar />
</View>
);
}
}
const styles = StyleSheet.create({
button: {
padding: 6,
height:50,
width:50
},
countContainer: {
},
countText: {
color: '#FF00FF'
}
})
export default Appp
Actually i get this as interface but i want to make the button Camera in the blue area near the icon of menu
Any help please ?
Try inserting the camera icon inside the menu bar.
something like this
<View style={styles.container}>
<View style={styles.menuBar}>
<Icon/>
<Menu/>
</View>
</View>