我正在使用 NativeBase（尤其是 NativeBaseSink 模板）。我所有的路由都在 App.js 中定义，如下所示：
应用程序.js
import { Platform } from "react-native";
import { Root } from "native-base";
import { StackNavigator, TabNavigator } from "react-navigation";
import Drawer from "./Drawer";
import Homepage from "./main_scenes/main";
import Splashscreen from "./main_scenes/home/";
import LoginScene from "./main_scenes/home/login/";
import RegisterScene from "./main_scenes/home/register/";
import InsertPhoneCode from "./main_scenes/home/pin/";
import MyResults from "./main_scenes/results/";
import MyMap from "./main_scenes/results/map/";
import UserDetails from "./main_scenes/profile/";
import MyResultsByDistance from "./main_scenes/results/Distance"
import MyResultsByAvis from "./main_scenes/results/Avis"
import Test from "./main_scenes/tab"
const AppNavigator = StackNavigator(
{
Drawer: { screen: Drawer },
RegisterScene: {screen : RegisterScene},
Splashscreen:{ screen : Splashscreen},
Homepage:{ screen : Homepage},
InsertPhoneCode:{screen:InsertPhoneCode},
LoginScene: {screen : LoginScene},
MyResults: {screen:MyResults},
MyMap:{screen:MyMap},
UserDetails:{screen:UserDetails},
MyResultsByDistance:{screen:MyResultsByDistance},
MyResultsByAvis:{screen:MyResultsByAvis},
},
{
initialRouteName: "Splashscreen",
headerMode: "none",
}
);
export default () =>
<Root>
<AppNavigator />
</Root>;
我正在使用 Nativebase 框架的选项卡功能。然后，我创建了一个 index.js，我在其中定义了我的所有选项卡，如下所示：
index.js
import React, { Component } from "react";
import {Dimensions, AppRegistry, StyleSheet,
ListView, ScrollView,View,Image,TouchableOpacity,AsyncStorage, Alert} from 'react-native';
import {
Container,
Header,
Title,
Button,
Icon,
Tabs,
Tab,
Text,
Right,
Left,
Body,
TabHeading,
Footer,
FooterTab,
} from "native-base";
import DisplayByDistance from "./Distance/";
import DisplayByAvis from "./Avis/";
import styles from "./styles";
import { StackNavigator } from 'react-navigation';
export default class ConfigTab extends Component {
constructor(props) {
super(props);
this.state = {
tab1: false,
mapRegion: null,
lastLat: null,
lastLong: null,
};
}
toggleTab1() {
this.setState({
tab1: true,
});
}
render() {
return (
<Container>
<Header hasTabs>
<Left>
<Button transparent onPress={() => this.props.navigation.goBack()}>
<Icon name="arrow-back" />
</Button>
</Left>
<Body style={{ flex: 3 }}>
<Title> Résultats</Title>
</Body>
<Right />
</Header>
<Tabs style={{ elevation: 3 }}>
<Tab
heading={
<TabHeading><Icon name="navigate" /><Text
style={styles.TabTitle}>Le plus prés</Text></TabHeading>
}
>
<DisplayByDistance />
</Tab>
<Tab heading={<TabHeading><Icon name="star-half" /><Text
style={styles.TabTitle}>Le mieux noté</Text></TabHeading>}>
<DisplayByAvis />
</Tab>
</Tabs>
<Footer>
<FooterTab>
<Button active={this.state.tab1} onPress={() => this.props.navigation.navigate("MyMap")}>
<Icon active={this.state.tab1} name="paper-plane" />
<Text>Afficher la carte</Text>
</Button>
</FooterTab>
</Footer>
</Container>
);
}
}
AppRegistry.registerComponent('ConfigTab', () => ConfigTab);
根据我编辑的文件，当我按下 TabOne 时，它会打开右侧选项卡，其中内容位于名为 Distance.js 的文件中所以现在，除了“props.navigation.navigate”之外，一切正常在我的 Distance.js 文件中无法识别。
这是我的文件
距离.js
import React, { Component, PropTypes } from "react";
import {...} from 'react-native';
import {...} from "native-base";
import styles from "./../styles";
import { StackNavigator } from 'react-navigation';
import App from "./../../../App"
var productArray = [];
class TabOne extends Component {
constructor(props){
super(props)
var dataSource = new ListView.DataSource({rowHasChanged:(r1,r2) => r1.guid != r2.guid});
this.state={
data:[],
dataSource: dataSource.cloneWithRows(productArray),
isLoading:true,
}
this.donePressed=this.donePressed.bind(this);
};
componentDidMount()
{
this.getTheData(function(json){
productArray = json;
this.setState({
dataSource:this.state.dataSource.cloneWithRows(productArray),
isLoading:false
})
}.bind(this));
}
donePressed() {
const { navigate } = this.props.navigation;
navigate('UserDetails');
}
getTheData(callback) {
var url = "http://paradox.ma/workshop/webservices/getPOI_info.php";
fetch(url)
.then(response => response.json())
.then(json => callback(json))
.catch(error => alert("Erreur de connexion Internet") );
}
list(rowData) {
if (rowData === null) { return <View></View>; };
let VerifiedUser;
const VerifiedTest=rowData.Verified;
if (VerifiedTest==='1')
{
VerifiedUser=(
<Right>
<View style={styles.avatarBox}>
<Text numberOfLines={2}><Icon name="verified" size={30} color="green" /></Text>
<Text>Profil vérifié</Text>
</View>
</Right>
)}
return (
<ListItem thumbnail
onPress={() => this.donePressed().bind(this)}
>
<Left>
<View style={styles.avatarBox}>
<Thumbnail size={55} source={{uri:rowData.Avatar}} />
<Text style={styles.avatarTitle}>{rowData.Title}</Text>
</View>
</Left>
<Body>
<Text>{rowData.Title}</Text>
<Text numberOfLines={2}><Icon name="map-marker" size={15} color="grey" /> {rowData.Address}, {rowData.City} ({rowData.Distance} km)</Text>
<Text numberOfLines={3}>{rowData.Description}</Text>
</Body>
{VerifiedUser}
</ListItem>
);
}
render(){
return(
<Container>
<View>
<TouchableOpacity onPress={() => this.donePressed().bind(this)}>
<Text>Test</Text>
</TouchableOpacity>
</View>
</Container>
);
}
}
export default TabOne;
this.props.navigation.navigate当我替换by时，我的名为 donePressed() 的函数运行良好alert("Hello")但是一旦我尝试在屏幕之间导航，就会出现错误：Undefined is not an object...this_2.props.navigation.navigate().
我真的不知道问题出在哪里。我试图在构造函数中定义函数，没办法。
希望能找到解决办法。