本机应用程序开发这是我尝试过的
文件:index.android.js
/**
* Sample React Native App
* https://github.com/facebook/react-native
* @flow
*/
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Navigator,
TouchableHighlight,
Text,
View
} from 'react-native';
var Loader = require('./app/components/Loader');
var Login = require('./app/components/Login');
export default class Demo extends Component {
constructor(props) {
super(props);
}
render() {
return (
<Navigator>
initialRoute = {{
id:'Loader',
}}
renderScene = {(route, navigator) => {
_navigator = navigator;
switch (route.id){
case 'Loader':
return (<Loader navigator={navigator} route={route} title="Loader"/>);
case 'Login':
return (<Login navigator={navigator} route={route} title="Login"/>);
}
}
}
</Navigator>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});
AppRegistry.registerComponent('Demo', () => Demo);
我的加载器组件:
import React, { Component } from 'react';
import {
StyleSheet,
Text,
View,
Image
} from 'react-native'
class Loader extends Component{
constructor(props) {
super(props);
this.state = {
id: 'Loader'
}
}
render(){
return(
<View style={styles.container}>
<Image source={require('../assets/img/ace-logo-white-01.png')} style={styles.logo}/>
<Text style={styles.loadingText}>Loading...</Text>
</View>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
backgroundColor: 'red'
},
logo: {
height: 30,
width: 50
},
loadingText: {
flex:1,
fontSize: 25,
paddingTop: 20,
color: 'white'
}
});
module.exports = Loader;
当我运行应用程序时出现错误 undefined is not a funtion(evalating 'this.props.renderScene(route,this)')
我已经通过观看 Youtube 上的一些教程来尝试这个,但我找不到我的问题的答案。
我想要做的是当应用程序启动时,我制作的加载器组件应该加载,然后从加载器组件我将用户重定向到登录组件,但目前我无法加载任何组件,因为它加载了我上面提到的错误。