IT技术 - react-native TypeError: undefined 不是一个对象（评估'this.props.navigator.push'） - 吾爱随笔录

我正在尝试这个适用于 android 的 react-native 教程：https : //www.raywenderlich.com/126063/react-native-tutorial

我在使用导航器时遇到问题。第一个屏幕（SearchPage）工作正常，但是当尝试 .push 到下一个屏幕时，它给了我以下错误：

发生了一些不好的事情 TypeError: undefined is not an object (evaluating 'this.props.navigator.push')

主要的：

render () {
 return(
  <Navigator
    initialRoute={{id: 'SearchPage'}}
    renderScene={this.renderScene.bind(this)}
    />
 );
}

renderScene(route, navigator) {
 switch (route.id) {
  case 'SearchPage':
   return (
    <SearchPage navigator={navigator} />
   );
   case 'TestScreen':
    return (
     <TestScreen navigator={this.props.navigator} />
   );}

搜索页面：

_executeQuery(query) {
 this.setState({ isLoading: true });
 fetch(query)
  .then(response => response.json())
  .then(json => this._handleResponse(json.response).bind(this))
  .catch(error =>
     this.setState({
      isLoading: false,
      message: 'Something bad happened ' + error
   }));
}

_handleResponse(response) {
  this.setState({ isLoading: false , message: '' });
  if (response.application_response_code.substr(0, 1) === '1') {
    this.props.navigator.push({
      id: 'TestScreen',
    });
  } else {
    this.setState({ message: 'Location not recognized; please try again.'});
  }
}

提前致谢！

renderScene = (route, navigator) => { switch (route.id) { case 'SearchPage': return ( <SearchPage navigator={navigator} /> ); case 'TestScreen': return ( <TestScreen navigator={navigator} /> ); }

_executeQuery = (query) => { this.setState({ isLoading: true }); fetch(query) .then(response => response.json()) .then(json => this._handleResponse(json.response)) .catch(error => this.setState({ isLoading: false, message: 'Something bad happened ' + error })); } _handleResponse = (response) => { this.setState({ isLoading: false , message: '' }); if (response.application_response_code.substr(0, 1) === '1') { this.props.navigator.push({ id: 'TestScreen', }); } else { this.setState({ message: 'Location not recognized; please try again.'}); } }