我真的无法让我的导航工作。我正在使用react-navigation(StackNavigator)。未定义不是一个对象(评估'_this2.props.navigation.navigate') - 反应本地
这是我的结构: http://i.imgur.com/IKExx9g.png
我的导览功能HomeScreen.js
:我从HomeScreen.js
浏览到NewScreen.js
没有问题。
App.js:
import React from 'react';
import {
StatusBar, AppRegistry
} from 'react-native';
import {StackNavigator} from 'react-navigation';
import {HomeScreen} from './screens/HomeScreen';
import AboutScreen from "./screens/AboutScreen";
import NewScreen from "./screens/NewScreen";
import CalendarScreen from "./screens/CalendarScreen";
import AddAgendaScreen from "./screens/AddAgendaScreen";
const SimpleApp = StackNavigator({
Home: {screen: HomeScreen},
About: {screen: AboutScreen},
New: {screen: NewScreen},
Calendar: {screen: CalendarScreen},
AddAgenda: {screen: AddAgendaScreen}
});
console.disableYellowBox = true;
StatusBar.setHidden(true);
export default SimpleApp; // Export root navigator as the root component
Homescreen.js(工作):
export class HomeScreen extends React.Component {
static navigationOptions = ({navigation}) => {
const {state, navigate} = navigation;
return {
title: 'eXopera'
};
};
constructor() {
super();
this.state = {
address: [],
refreshing: false,
page: 1,
lastPage: 1,
loading: true,
listOpacity: 0,
};
}
render() {
return (
<ScrollableTabView style={{backgroundColor: '#fff'}} renderTabBar={() => <DefaultTabBar />}>
<View style={{flex: 1, backgroundColor: '#fff'}} tabLabel="Adressen">
<Button color="#33cd5f" title="NEW"
onPress={() => this.props.navigation.navigate('New') }/>
</View>
</ScrollableTabView>
);
}
}
然后是另一个组件调用CalendarScreen.js(这里我也尝试导航到NewScreen.js),即使我完全复制并粘贴HomeScreen.js中的代码,我也无法浏览。它总是给我“未定义不是一个对象(评估'_this2.props.navigation.navigate')”。
我真的不知道我现在能做什么..一直在挣扎几个小时。
在此先感谢!
尝试删除'console.disableYellowBox'以查看是否收到任何预警。同样在什么时候你会得到错误。是否当你点击NewScreen中的按钮? –
这是我从NewScreen中点击按钮的时候。我已经移除'console.disableYellowBox'而没有成功:没有警告。 –
就我所知,您发布的代码没有任何问题。你可以发布NewScreen.js吗? –