I am facing a puzzling issue that I can't quite grasp.
My goal is to exhibit messages stored in an array using multiple flatlists and then categorize them by date.
These messages are essentially a series of chat conversations containing questions and answers, recorded in an offline database (PouchDB). What I aim to achieve is to showcase the questions that the user has answered and essentially view the conversation logs.
Below is the code snippet:
const screen = Dimensions.get('screen');
const styles = StyleSheet.create({
logsView: {
backgroundColor: '#dddddd',
paddingLeft: 15,
paddingRight: 2,
height: '100%',
},
dateContainer: {
width: '75%',
padding: 1,
marginTop: 5,
},
dateContent: {
textAlign: 'center',
},
});
export default class ComponentPlanDetailsScreen
extends ComeoMeAbstractScreen<PropsType, StateType> {
static navigationOptions = {
title: µte('MyPlans'),
headerRight: (<View />),
};
constructor(props: PropsType) {
super(props);
this.IfeelMessagesBusiness = new IfeelMessagesBusiness();
this.state = {
currentDate: new Date(),
markedDate: moment(new Date()).format('YYYY-MM-DD'),
messages: [],
};
}
componentDidMount = () => {
// Get all messages from chat history
this.IfeelMessagesBusiness.getAllIfeelMessages().then((result: Object) => {
this.setState({ messages: result });
});
};
// Render each item of Flatlist
renderLogItem = ({ item }: Object) => {
console.log(`je passe renderlogitem ${JSON.stringify(item)}`);
return <LogItem message={item} />;
}
// Key for data in FlatList component
keyExtractor = (item: Object, index: number): string => index.toString();
render() {
const test = [
{
stringValue: 'Did you take some drugs ?',
isImage: false,
isQuestion: true,
questionNumber: 6,
author: {
id: 1,
avatar: 'http://image.noelshack.com/fichiers/2016/47/1480031586-1474755093-risitas721.png',
username: 'Dr Risitas',
},
loggedDateTime: '1552033946989',
},
];
const today = this.state.currentDate;
const day = moment(today).format('x');
return (
<View>
<Carousel
animate={false}
indicatorSize={10}
height={screen.height * 0.7
}
>
<View>
<ScrollView
style={styles.logsView}
>
<View>
{this.state.messages.map((ItemListByDate: Object): Array<Object> => {
console.log(`je passe array ${JSON.stringify([ItemListByDate])}`);
return (
<View key={ItemListByDate.loggedDateTime.toString()}>
<View style={styles.dateContainer}>
{ (parseInt(ItemListByDate.loggedDateTime, 10) + 172800000) <= parseInt(day.toString(), 10) ?
<Text style={styles.dateContent}>{moment(parseInt(ItemListByDate.loggedDateTime, 10)).format('DD-MM-YYYY')}</Text>
:
<Text style={styles.dateContent}>{moment(parseInt(ItemListByDate.loggedDateTime, 10)).fromNow()}</Text>
}
</View>
<View>
<FlatList
data={[ItemListByDate]}
renderItem={this.renderLogItem}
keyExtractor={this.keyExtractor}
ref={(ref: any) => { this.flatList = ref; }}
onContentSizeChange={(): any => this.flatList.scrollToEnd({ animated: true })}
onLayout={(): any => this.flatList.scrollToEnd({ animated: true })}
/>
</View>
</View>);
})
}
</View>
</ScrollView>
</View>
</Carousel>
</View>
);
}
}
The challenge I'm encountering lies in the fact that the renderLogItem function which should invoke the LogItem component is not being executed, even though the ItemListByDate array is displayed in the log. Instead of showing the expected messages, only the gray background of the ScrollView component is visible.
However, when I substitute `test` array for `this.state.messages` within the map function, the message displays correctly on the interface and renderLogItem is called as expected.
It seems like the initial state of messages being empty might be causing a visual glitch where the messages remain hidden until a re-render occurs triggered by the update of the state in componentDidMount.
Your insights and assistance on resolving this matter would be greatly appreciated!