我在React,React Native和React Navigation方面相当陌生。取得了一些进展,但遇到了这个问题。
通常我会通过执行以下操作导航到新页面:
<Button
text='View Details' onPress={() =>
this.props.navigation.navigate('AccountScreen')} />
但是,我目前正在尝试导航到.fetch()
中的新屏幕,并想知道我需要做什么不同的事情。
请参阅下面的代码:
// AppNavigation.js:
...
const PrimaryNav = StackNavigator({
HomeScreen: { screen: HomeScreen },
AccountScreen: { screen: AccountScreen }
});
// HomeScreen.js
...
handlePress = (navigator) => {
fetch('https://example.com/this/url/works' + this.state.accountName, lookUpObject ).then( function(response) {
if(response.ok) {
// this does not work.
// returns this error:
// "undefined is not an object (evaluating 'navigator.navigate')"
navigator.navigate( 'AccountScreen', { "accountName": this.state.accountName } );
}
})
}
render () {
const { navigate } = this.props.navigation;
reutrn (
<ButtonCTA onPress={this.handlePress}>Go to account page</ButtonCTA>
)
}
现在我收到以下错误: "undefined is not an object (evaluating 'navigator.navigate')"
您只是忘记将导航器传递到handlePress
您的按钮代码应如下所示:
<ButtonCTA onPress={ ()=>this.handlePress(this.props.navigation) }>Go to account page</ButtonCTA>