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Visualizaçõeswhat is the best way to setParams to navigation before setting the options for Navigation using setOptions?
I wanna know the best way to set the params and options for react native navigation in a class component.
note that the same params are used in options.
when I put all code in the constructor I got params undefined because of timing issue.
and it works. for me in one case when I added option in componentDidMount , I will write some examples in the code below.
1- first case using class component (it's working)
type Props = {
navigation: NavigationProp<any>;
route: RouteProps<{ Example: {title: string} }, 'Example'>
}
export default class Example extends Component <Props> {
constructor(props: Props){
super(props)
this.props.navigation.setParams({ title: 'title' });
}
componentDidMount(){
this.props.navigation.setOptions({ title: this.props.route.params.title })
}
...
}
2 - second case using FC: (not using this example but I think it's also the best way todo for the FC).
export function Example: React.FC = () => {
const navigation = useNavigation();
const route = useRoute();
useLayoutEffect(()=>{
navigation.setParams({ title: 'title' });
navigation.setOptions({ title: route.params.title })
})
...
}
so I hope my question is clear, is that theright way to set Header options with the lates Navigation on React Native?
1 Respostas
Responde à pergunta0
constructor is the first step in component lifecycle, and you are setting params inside that, which means there is a prop that is going to be updated. so we need a function that understands every update on a state or received props, and that listener is nothing except "componentDidUpdate(){}" 🤟:
import {NavigationProp, RouteProp} from '@react-navigation/native';
import React, {Component} from 'react';
import {Text, StyleSheet, View} from 'react-native';
type Props = {
navigation: NavigationProp<any>;
route: RouteProp<{Example: {title: string}}, 'Example'>;
};
export default class Example extends Component<Props> {
constructor(props: Props) {
super(props);
this.props.navigation.setParams({title: 'title'});
}
componentDidUpdate() {
this.props.navigation.setOptions({title: this.props.route.params.title});
}
render() {
return (
<View style={styles.container}>
<Text style={styles.textStyle}>Use component did update :)</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
padding: 30,
},
textStyle: {
color: 'black',
fontSize: 20,
fontWeight: 'bold',
},
});
