how to pass parameters in pop method.
Requirement: There are two screens, screen 1 has two tabs like this: Address and Billing. There are two button on each tab layout. On click button go to screen 2 after functionality back to screen 1 but now which tab is active. If go to address tab so back to address tab same as billing tab.
Tell me how to do it?
You can pass callback while pushing screen like
Navigation.push(this.props.componentId, {
component: {
name: "Your.ScreenName",
options: {
callback:this.yourCallBackFun
}
}
});
Now while pop you can call that function like
this.props.callback();
Navigation.pop(this.props.componentId);
I think it will help you.
Screen A:
this.props.navigation.navigate('ScreenB', {func: this.func});
...
func = value => {
console.log(value);
}
Screen B:
this.props.navigation.getParam('func')();
You can call ScreenA function like this.
Screen1:
Write your navigation function and callback function in your first screen.
Pass callback function as a navigation parameter white pushing the screen.
const cbFunction = () => new Promise((resolve) => {
resolve();
});
const navigation = () => {
const { componentId } = this.props;
Navigation.push(componentId, {
component: {
name: `SCREEN_NAME`,
options: {
cbFunction: this.cbFunction
}
}
});
}
Screen2:
Write a function to go back to first screen. And call callback function from navigation parameter.
const goBack = async () => {
const { cbFunction, componentId } = this.props;
await cbFunction();
Navigation.pop(componentId);
}
Related
I get the error mentioned in the title and solutions like this one do not seem to work.
The user starts on screen 1 and then goes to several other screens before ending up on screen 1 again. When the user goes to screen 1 (again) I want to pass some params (and somehow use thos params to force a re-render of that component). This is my code:
Screen 1
function Screen 1(props, { route, navigation }) {
...
const { itemId } = route.params;
console.log(itemId);
Screen X (the last screen the user visits before going back to screen 1)
onPress={() => {
props.navigation.navigate("Screen_1", { itemId: Doe });
}}
You cannot mix destructuring of props and the props object at the same time, hence the statement
function Screen1(props, { route, navigation }) { ... }
is not valid.
You need to either destructure everything you need from props or use the props object.
function Screen1({ route, navigation }) {
const { itemId } = route.params
}
or
function Screen1(props) {
const { itemId } = props.route.params
}
I use react-navigation 5 and having issues because the params shows older values.
ScreenList.js
const handleFirstUser = () => {
const userDetail = {'name': 'First User'};
navigation.navigate('Details', { detail: userDetail});
}
const handleSecondUser = () => {
const userDetail = {'name': 'Second User'};
navigation.navigate('Details', { detail: userDetail});
}
The methods are called from a button and do go to Details Screen but the value is whichever was loaded initially:
ScreenDetails.js
const DetailsScreen = (props) =>{
const { navigation, route } = props;
const { params } = route;
const userDetail = params.name;
}
First time the app the loads, first user is loaded and correctly shows name. Then go back to the list screen, click user two. Still the first user is shown. I tried to clean up with useEffect but it doesnt have any effect:
useEffect(()=>{
return(()=>{
navigation.setParams({name: undefined});
});
}, [])
how can I reset setParams each it laods and use the values passed to it currently?
ComponentDidmount loads once in a lifetime. If I open a tab then it will be called but if I switch to another tab and then go to the first tab componentdidmount will not call again. I need some method which will call even when tab has been rendered earlier and I visit other tab then come back to first tab and it again runs.
Use this focus listener.
componentDidMount() {
this._unsubscribe = this.props.navigation.addListener('focus', () => {
// do something
});
}
you should add Focus listener in your project like that :
componentDidMount() {
const { navigation } = this.props;
this.focusListener = navigation.addListener('didFocus', () => {
console.log("refresh shod");
});
}
and this for remove listener :
componentWillUnmount() {
this.focusListener.remove();
}
I am having 2 screens in a react native app, both the screens are functional components.
A button on screen 1 leads to screen 2, I select a few checkboxes on screen 2 and click on a button to navigate to screen 1 with adding navigation params.
coming back on screen 1 runs didFocus listener, but param values are undefined, when I hit ctrl+s on in code editor, useEffect runs and values become accessible.
After this, going back to screen 1 from screen 2 runs didfocus listener (as expected) but the param values do not update.
below is useEffect code in screen 1.
useEffect(() => {
navigation.getParam('from') == 'TagFiltersScreen' ? getAllQuestions('mostInsightful', navigation.getParam('tagsFilter')) : getAllQuestions();
const listener = navigation.addListener('didFocus', () => {
navigation.getParam('from') == 'TagFiltersScreen' ? getAllQuestions('mostInsightful', navigation.getParam('tagsFilter')) : getAllQuestions();
});
return () => {
listener.remove();
}
}, []);
I faced the same issue, and here is how I am doing it.
useEffect(() => {
const isFocused = props.navigation.isFocused();
if (isFocused) {
const { params } = props.navigation.state;
navigationFocus(params);
}
const navigationFocusListener = props.navigation.addListener('willFocus', (payload) => {
const params = payload.state.params;
navigationFocus(params);
});
return () => {
navigationFocusListener.remove();
};
}, []);
const navigationFocus = (params) => {
if (params) {
}
}
I'll be curios to know if there is a better way of doing this.
I have a Screen for Main then it's push to Next for selection and passes parameters to next pushed screen and when you select something in that screen I need to pop(2) and send selected details to the main screen.
But pop didn't accept parameters. How to accomplish this.
I don't use Redux or MobX.
You need to do this
Screen A:
this.props.navigation.navigate('ScreenB', {
onPressScreenAFun: (params) => {
this.screenAFun(params)
},
})
screenAFun = (params) => {
console.log(params)
}
Screen B:
this.props.navigation.navigate('ScreenC', {
onPressScreenBFun: (params) => {
this.screenBFun(params)
},
})
screenBFun = (params) => {
const { onPressScreenAFun } = this.props.navigation.navigate.state.params
onPressScreenAFun(params)
this.props.navigation.goBack()
}
Screen C:
moveBack = (params) => {
const { onPressScreenBFun } = this.props.navigation.navigate.state.params
onPressScreenBFun(params)
this.props.navigation.goBack()
}
this is how you can pass params from Screen C to Screen A with two pop()