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我正在測試我的代碼,並得到一個錯誤。我需要按下一個按鈕並轉到下一頁。反應原生。未定義不是對象(評估'this.props.navigator.push')
首先,我創建了Safay.js並編寫代碼來設置此頁面中的初始路由。然後我創建了buttonsubmit.js,這樣當我按下按鈕時,它將進入下一頁,route.js。但是,當測試時我得到一個錯誤。我只是重新檢查了我的代碼,我可能輸入了錯誤,或者可能是我不知道的。
這是我的錯誤:
got error: undefined is not an object (evaluating 'this.props.navigator.push')
錯誤文件ButtonSubmit.js:22
這是我的代碼:
Safay.js
import index from './index.js';
import React, { Component, PropTypes } from 'react';
import {Navigator, StatusBar, TouchableHighlight,
AppRegistry, StyleSheet, Text, View} from 'react-native';
import Route from './Route.js';
import Signup from './Signup.js';
import ButtonSubmit from './ButtonSubmit.js';
export default class Safay extends Component {
renderScene(route, navigator){
if(route.name == 'Safay'){
return <Safay navigator={navigator}/>
}
if(route.name == 'Route'){
return <Route navigator={navigator}/>
}
}
render() {
return (
<View style={styles.container}>
{<navigator
initialRoute={{name: 'Safay'}}
renderScene={this.renderScene.bind(this)}
/>}
</View>
);
}
}
個ButtonSubmit.js
import React, { Component, PropTypes } from 'react';
import Dimensions from 'Dimensions';
import {
StyleSheet,
TouchableOpacity,
Text,
Animated,
Easing,
Image,
Alert,
View,
} from 'react-native';
const DEVICE_WIDTH = Dimensions.get('window').width;
const DEVICE_HEIGHT = Dimensions.get('window').height;
const MARGIN = 40;
export default class ButtonSubmit extends Component {
navigate(routeName){
this.props.navigator.push({
name: routeName
})
}
render() {
return (
<View style={styles.container}>
<TouchableOpacity onPress={this.navigate.bind(this, 'Route')} style={styles.button}>
<Text style={styles.text}>LOGIN</Text>
</TouchableOpacity>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
top: -20,
alignItems: 'center',
justifyContent: 'flex-start',
},
button: {
alignItems: 'center',
justifyContent: 'center',
backgroundColor: '#ff8011',
height: MARGIN,
borderRadius: 20,
zIndex: 100,
width: DEVICE_WIDTH - 40,
},
circle: {
height: MARGIN,
width: MARGIN,
marginTop: -MARGIN,
borderWidth: 1,
borderColor: '#ff8011',
borderRadius: 100,
alignSelf: 'center',
zIndex: 99,
backgroundColor: '#ff8011',
},
text: {
color: 'white',
fontWeight: '700',
fontSize: 21,
backgroundColor: 'transparent',
},
});
Route.js
import React, { Component } from 'react';
import {Navigator, StatusBar, TouchableHighlight,
AppRegistry, StyleSheet, Text, View} from 'react-native';
export default class Route extends Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native!
</Text>
<Text style={styles.instructions}>
To get started, edit index.ios.js
</Text>
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#05121F',
},
});
謝謝您的支持。