React Navigation: "navigation.state.params" is always undefined in 'static navigationOptions'
The heart of my problem is that when I have this in my navigationOptions:
static navigationOptions = ({ navigation }) => {
console.log(navigation)
console.log(navigation.state)
}
The first statement, console.log, returns a navigation object complete with "navigation.state.params" containing the parameters that I passed to it.
However the second "console.log" returns a "navigation.state" object, but for some reason "params" is undefined.
This is how I set the navigation options (from redux):
function mapStateToProps(state, props) {
let sum = 0
for (let product in state.cart) {
sum += state.cart[product]
}
return props.navigation.state = {params: {cartSum: sum}}
}
And my developer environment:
node 6.10.1
react-native 0.46.4
redux 3.7.1
react-reduction 5.0.5
react-navigation 1.0.0-beta.11
+3
Philip S
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2 answers
Used like
static navigationOptions = ({ navigation }) => {
const { params = {} } = navigation.state;
console.log(params)**will show you the handlesave with object value hello**
};
this.props.navigation.setParams({ handleSave: "Heloo" });
Maybe this can help you, thanks
+2
ashutosh pandey
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You can work around this problem by implementing the method in the component class.
getNavigationParams() {
return this.props.navigation.state.params || {};
}
This will give you access to the parameters. But this doesn't work for nested objects.
-1
Xen_mar
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