Javascript 反应本机导航：未定义已使用但尚未注册_Javascript_Android_React Native_Velo_React Native Navigation

Javascript 反应本机导航：未定义已使用但尚未注册

javascript android react-native

Javascript 反应本机导航：未定义已使用但尚未注册,javascript,android,react-native,velo,react-native-navigation,Javascript,Android,React Native,Velo,React Native Navigation,我正在尝试使用react native和创建一个简单的应用程序。我已经下载并使用了repo中的示例，试图找出问题所在，并查看了使用指南，但似乎一切都正常但是，当应用程序启动时，会产生以下错误： Navigation.getRegisteredScreen:未定义已使用但尚未注册我已经看过了屏幕注册，但是它的实现与示例或使用指南中的没有区别版本信息： "react": "16.0.0-alpha.6", "react-native": "0.43.0", "react-native-elem

我正在尝试使用react native和创建一个简单的应用程序。我已经下载并使用了repo中的示例，试图找出问题所在，并查看了使用指南，但似乎一切都正常

但是，当应用程序启动时，会产生以下错误：

Navigation.getRegisteredScreen:未定义已使用但尚未注册

我已经看过了屏幕注册，但是它的实现与示例或使用指南中的没有区别

版本信息：

"react": "16.0.0-alpha.6",
"react-native": "0.43.0",
"react-native-elements": "^0.10.3",
"react-native-navigation": "^1.0.30",
"react-native-vector-icons": "^4.0.0"

目前，我正在开发Android而不是iOS，代码如下。欢迎任何指点：

index.android.js

import App from './src/app';

import {
    Platform
} from 'react-native';
import {Navigation} from 'react-native-navigation';

//Screen related book keeping
import {registerScreens} from './screens';
registerScreens();

//Create and store tab reference for use within Navigation constructor
const createTabs = () => {
    let tabs = [
        {
            label: 'One',
            screens: 'TestApp.HomeScreen',
            icon: require('../img/one.png'),
            selectedIcon: require('../img/one_selected.png'),
            title: 'Home'
        },
        {
            label: 'Two',
            screens: 'TestApp.CodeScreen',
            icon: require('../img/two.png'),
            selectedIcon: require('../img/two_selected.png'),
            title: 'Codes'
        },
    ];
    return tabs;
};
//this will start the app
Navigation.startTabBasedApp({
    tabs: createTabs(),
    tabsStyle: {
        tabBarBackgroundColor: '#0f2362',
        tabBarButtonColor: '#ffffff',
        tabBarSelectedButtonColor: '#63d7cc'
    },
    appStyle: {
        orientation: 'portrait'
    },
});

import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
import CodeScreen from './CodeScreen';

// register all screens of the app (including internal ones)
export function registerScreens () {
  Navigation.registerComponent('TestApp.HomeScreen', () => HomeScreen);
  Navigation.registerComponent('TestApp.CodeScreen', () => CodeScreen);
}

import React, { Component } from 'react';
import {
  Text,
  View,
  ScrollView,
  TouchableOpacity,
  StyleSheet,
  Alert
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class CodeScreen extends Component {
      constructor(props) {
    super(props);
  }

  render() {
    return (
      <View style={styles.container}>

        <TouchableOpacity>
          <Text style={styles.button}>Change Buttons</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Change Title</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Switch To Tab#1</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Set Tab Badge</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Toggle Tabs</Text>
        </TouchableOpacity>

      </View>
    );
  }
 }

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white'
  },
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop:10,
    color: 'blue'
  }
});

import React, { Component } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  StyleSheet,
  Alert,
  Platform
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class HomeScreen extends Component {
  constructor(props) {
    super(props);
    // if you want to listen on navigator events, set this up
  }

  render() {
    return (
      <View style={{flex: 1, padding: 20}}>
        <TouchableOpacity>
          <Text style={styles.button}>Push Plain Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Push Styled Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Show Modal Screen</Text>
        </TouchableOpacity>

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show LightBox</Text>
            </TouchableOpacity> : false
        }

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show In-App Notification</Text>
            </TouchableOpacity> : false
        }

        <TouchableOpacity>
          <Text style={styles.button}>Show Single Screen App</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop: 10,
    color: 'blue'
  }
});

app.js

import App from './src/app';

import {
    Platform
} from 'react-native';
import {Navigation} from 'react-native-navigation';

//Screen related book keeping
import {registerScreens} from './screens';
registerScreens();

//Create and store tab reference for use within Navigation constructor
const createTabs = () => {
    let tabs = [
        {
            label: 'One',
            screens: 'TestApp.HomeScreen',
            icon: require('../img/one.png'),
            selectedIcon: require('../img/one_selected.png'),
            title: 'Home'
        },
        {
            label: 'Two',
            screens: 'TestApp.CodeScreen',
            icon: require('../img/two.png'),
            selectedIcon: require('../img/two_selected.png'),
            title: 'Codes'
        },
    ];
    return tabs;
};
//this will start the app
Navigation.startTabBasedApp({
    tabs: createTabs(),
    tabsStyle: {
        tabBarBackgroundColor: '#0f2362',
        tabBarButtonColor: '#ffffff',
        tabBarSelectedButtonColor: '#63d7cc'
    },
    appStyle: {
        orientation: 'portrait'
    },
});

import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
import CodeScreen from './CodeScreen';

// register all screens of the app (including internal ones)
export function registerScreens () {
  Navigation.registerComponent('TestApp.HomeScreen', () => HomeScreen);
  Navigation.registerComponent('TestApp.CodeScreen', () => CodeScreen);
}

import React, { Component } from 'react';
import {
  Text,
  View,
  ScrollView,
  TouchableOpacity,
  StyleSheet,
  Alert
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class CodeScreen extends Component {
      constructor(props) {
    super(props);
  }

  render() {
    return (
      <View style={styles.container}>

        <TouchableOpacity>
          <Text style={styles.button}>Change Buttons</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Change Title</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Switch To Tab#1</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Set Tab Badge</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Toggle Tabs</Text>
        </TouchableOpacity>

      </View>
    );
  }
 }

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white'
  },
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop:10,
    color: 'blue'
  }
});

import React, { Component } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  StyleSheet,
  Alert,
  Platform
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class HomeScreen extends Component {
  constructor(props) {
    super(props);
    // if you want to listen on navigator events, set this up
  }

  render() {
    return (
      <View style={{flex: 1, padding: 20}}>
        <TouchableOpacity>
          <Text style={styles.button}>Push Plain Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Push Styled Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Show Modal Screen</Text>
        </TouchableOpacity>

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show LightBox</Text>
            </TouchableOpacity> : false
        }

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show In-App Notification</Text>
            </TouchableOpacity> : false
        }

        <TouchableOpacity>
          <Text style={styles.button}>Show Single Screen App</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop: 10,
    color: 'blue'
  }
});

/src/screens/index.android.js

import App from './src/app';

import {
    Platform
} from 'react-native';
import {Navigation} from 'react-native-navigation';

//Screen related book keeping
import {registerScreens} from './screens';
registerScreens();

//Create and store tab reference for use within Navigation constructor
const createTabs = () => {
    let tabs = [
        {
            label: 'One',
            screens: 'TestApp.HomeScreen',
            icon: require('../img/one.png'),
            selectedIcon: require('../img/one_selected.png'),
            title: 'Home'
        },
        {
            label: 'Two',
            screens: 'TestApp.CodeScreen',
            icon: require('../img/two.png'),
            selectedIcon: require('../img/two_selected.png'),
            title: 'Codes'
        },
    ];
    return tabs;
};
//this will start the app
Navigation.startTabBasedApp({
    tabs: createTabs(),
    tabsStyle: {
        tabBarBackgroundColor: '#0f2362',
        tabBarButtonColor: '#ffffff',
        tabBarSelectedButtonColor: '#63d7cc'
    },
    appStyle: {
        orientation: 'portrait'
    },
});

import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
import CodeScreen from './CodeScreen';

// register all screens of the app (including internal ones)
export function registerScreens () {
  Navigation.registerComponent('TestApp.HomeScreen', () => HomeScreen);
  Navigation.registerComponent('TestApp.CodeScreen', () => CodeScreen);
}

import React, { Component } from 'react';
import {
  Text,
  View,
  ScrollView,
  TouchableOpacity,
  StyleSheet,
  Alert
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class CodeScreen extends Component {
      constructor(props) {
    super(props);
  }

  render() {
    return (
      <View style={styles.container}>

        <TouchableOpacity>
          <Text style={styles.button}>Change Buttons</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Change Title</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Switch To Tab#1</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Set Tab Badge</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Toggle Tabs</Text>
        </TouchableOpacity>

      </View>
    );
  }
 }

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white'
  },
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop:10,
    color: 'blue'
  }
});

import React, { Component } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  StyleSheet,
  Alert,
  Platform
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class HomeScreen extends Component {
  constructor(props) {
    super(props);
    // if you want to listen on navigator events, set this up
  }

  render() {
    return (
      <View style={{flex: 1, padding: 20}}>
        <TouchableOpacity>
          <Text style={styles.button}>Push Plain Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Push Styled Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Show Modal Screen</Text>
        </TouchableOpacity>

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show LightBox</Text>
            </TouchableOpacity> : false
        }

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show In-App Notification</Text>
            </TouchableOpacity> : false
        }

        <TouchableOpacity>
          <Text style={styles.button}>Show Single Screen App</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop: 10,
    color: 'blue'
  }
});

/src/screens/CodeScreen.js

import App from './src/app';

import {
    Platform
} from 'react-native';
import {Navigation} from 'react-native-navigation';

//Screen related book keeping
import {registerScreens} from './screens';
registerScreens();

//Create and store tab reference for use within Navigation constructor
const createTabs = () => {
    let tabs = [
        {
            label: 'One',
            screens: 'TestApp.HomeScreen',
            icon: require('../img/one.png'),
            selectedIcon: require('../img/one_selected.png'),
            title: 'Home'
        },
        {
            label: 'Two',
            screens: 'TestApp.CodeScreen',
            icon: require('../img/two.png'),
            selectedIcon: require('../img/two_selected.png'),
            title: 'Codes'
        },
    ];
    return tabs;
};
//this will start the app
Navigation.startTabBasedApp({
    tabs: createTabs(),
    tabsStyle: {
        tabBarBackgroundColor: '#0f2362',
        tabBarButtonColor: '#ffffff',
        tabBarSelectedButtonColor: '#63d7cc'
    },
    appStyle: {
        orientation: 'portrait'
    },
});

import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
import CodeScreen from './CodeScreen';

// register all screens of the app (including internal ones)
export function registerScreens () {
  Navigation.registerComponent('TestApp.HomeScreen', () => HomeScreen);
  Navigation.registerComponent('TestApp.CodeScreen', () => CodeScreen);
}

import React, { Component } from 'react';
import {
  Text,
  View,
  ScrollView,
  TouchableOpacity,
  StyleSheet,
  Alert
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class CodeScreen extends Component {
      constructor(props) {
    super(props);
  }

  render() {
    return (
      <View style={styles.container}>

        <TouchableOpacity>
          <Text style={styles.button}>Change Buttons</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Change Title</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Switch To Tab#1</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Set Tab Badge</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Toggle Tabs</Text>
        </TouchableOpacity>

      </View>
    );
  }
 }

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white'
  },
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop:10,
    color: 'blue'
  }
});

import React, { Component } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  StyleSheet,
  Alert,
  Platform
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class HomeScreen extends Component {
  constructor(props) {
    super(props);
    // if you want to listen on navigator events, set this up
  }

  render() {
    return (
      <View style={{flex: 1, padding: 20}}>
        <TouchableOpacity>
          <Text style={styles.button}>Push Plain Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Push Styled Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Show Modal Screen</Text>
        </TouchableOpacity>

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show LightBox</Text>
            </TouchableOpacity> : false
        }

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show In-App Notification</Text>
            </TouchableOpacity> : false
        }

        <TouchableOpacity>
          <Text style={styles.button}>Show Single Screen App</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop: 10,
    color: 'blue'
  }
});

import React，{Component}来自'React'；
进口{
文本，
看法
滚动视图，
可触摸不透明度，
样式表，
警觉的
}从“反应本机”；
从“react native Navigation”导入{Navigation，Screen}；
导出默认类CodeScreen扩展组件{
建造师（道具）{
超级（道具）；
}
render（）{
返回(
更改按钮
改名
切换到选项卡1
设置标签徽章
切换选项卡
);
}
}
const styles=StyleSheet.create({
容器：{
弹性：1，
填充：20，
背景颜色：“白色”
},
按钮：{
textAlign:'中心'，
尺码：18，
marginBottom:10，
玛金托普：10，
颜色：“蓝色”
}
});

/src/screens/HomeScreen.js

import App from './src/app';

import {
    Platform
} from 'react-native';
import {Navigation} from 'react-native-navigation';

//Screen related book keeping
import {registerScreens} from './screens';
registerScreens();

//Create and store tab reference for use within Navigation constructor
const createTabs = () => {
    let tabs = [
        {
            label: 'One',
            screens: 'TestApp.HomeScreen',
            icon: require('../img/one.png'),
            selectedIcon: require('../img/one_selected.png'),
            title: 'Home'
        },
        {
            label: 'Two',
            screens: 'TestApp.CodeScreen',
            icon: require('../img/two.png'),
            selectedIcon: require('../img/two_selected.png'),
            title: 'Codes'
        },
    ];
    return tabs;
};
//this will start the app
Navigation.startTabBasedApp({
    tabs: createTabs(),
    tabsStyle: {
        tabBarBackgroundColor: '#0f2362',
        tabBarButtonColor: '#ffffff',
        tabBarSelectedButtonColor: '#63d7cc'
    },
    appStyle: {
        orientation: 'portrait'
    },
});

import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
import CodeScreen from './CodeScreen';

// register all screens of the app (including internal ones)
export function registerScreens () {
  Navigation.registerComponent('TestApp.HomeScreen', () => HomeScreen);
  Navigation.registerComponent('TestApp.CodeScreen', () => CodeScreen);
}

import React, { Component } from 'react';
import {
  Text,
  View,
  ScrollView,
  TouchableOpacity,
  StyleSheet,
  Alert
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class CodeScreen extends Component {
      constructor(props) {
    super(props);
  }

  render() {
    return (
      <View style={styles.container}>

        <TouchableOpacity>
          <Text style={styles.button}>Change Buttons</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Change Title</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Switch To Tab#1</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Set Tab Badge</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Toggle Tabs</Text>
        </TouchableOpacity>

      </View>
    );
  }
 }

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white'
  },
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop:10,
    color: 'blue'
  }
});

import React, { Component } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  StyleSheet,
  Alert,
  Platform
} from 'react-native';
import { Navigation, Screen } from 'react-native-navigation';

export default class HomeScreen extends Component {
  constructor(props) {
    super(props);
    // if you want to listen on navigator events, set this up
  }

  render() {
    return (
      <View style={{flex: 1, padding: 20}}>
        <TouchableOpacity>
          <Text style={styles.button}>Push Plain Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Push Styled Screen</Text>
        </TouchableOpacity>

        <TouchableOpacity>
          <Text style={styles.button}>Show Modal Screen</Text>
        </TouchableOpacity>

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show LightBox</Text>
            </TouchableOpacity> : false
        }

        {
          Platform.OS === 'ios' ?
            <TouchableOpacity>
              <Text style={styles.button}>Show In-App Notification</Text>
            </TouchableOpacity> : false
        }

        <TouchableOpacity>
          <Text style={styles.button}>Show Single Screen App</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  button: {
    textAlign: 'center',
    fontSize: 18,
    marginBottom: 10,
    marginTop: 10,
    color: 'blue'
  }
});

import React，{Component}来自'React'；
进口{
文本，
看法
可触摸不透明度，
样式表，
警觉的，
站台
}从“反应本机”；
从“react native Navigation”导入{Navigation，Screen}；
导出默认类主屏幕扩展组件{
建造师（道具）{
超级（道具）；
//如果要侦听navigator事件，请设置此选项
}
render（）{
返回(
推平筛
推式屏幕
显示模式屏幕
{
Platform.OS==='ios'？
展示灯箱
：错
}
{
Platform.OS==='ios'？
显示应用内通知
：错
}
显示单屏幕应用程序
);
}
}
const styles=StyleSheet.create({
按钮：{
textAlign:'中心'，
尺码：18，
marginBottom:10，
玛金托普：10，
颜色：“蓝色”
}
});

您使用了错误的键来指定

屏幕。在代码中：

const createTabs=（）=>{
设制表符=[{
标签:"一",，
屏幕：“TestApp.HomeScreen”，
图标：require（'../img/one.png'），
selectedIcon:require（'../img/one_selected.png'），
标题：“家”
},
{
标签:"两个",，
屏幕：“TestApp.CodeScreen”，
图标：require（'../img/two.png'），
selectedIcon:require（'../img/two_selected.png'），
标题：“代码”
},
];
返回标签；
};