我试图在clicked()
方法中访问this.props
,但它们未定义。我如何通过ListItemExample类中的方法访问this.props
?React Native无法在render()方法外访问this.props
我的目标是将id
保存到显示视图中,该视图显示单击的ListItemExample的详细视图。
export default class Example extends Component {
constructor() {
super();
let ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
this.state = {
dataSource: ds,
isLoading: true
};
}
componentDidMount() {
this.fetchData()
}
fetchData() {
Api.getPosts().then((resp) => {
console.log(resp);
this.setState({
dataSource: this.state.dataSource.cloneWithRows(resp.posts),
isLoading: false
})
});
}
render() {
return (
<View style={styles.container}>
<ListView
dataSource={this.state.dataSource}
renderRow={this.renderRow.bind(this)}
style={styles.postList}
/>
</View>
);
}
renderRow(post) {
return (
<PostListItem
id={post.id}
coverImage={post.cover_image}
title={post.title}
lockedStatus={post.status}
time={post.time} />
);
}
}
export default class ListItemExample extends Component {
constructor() {
super();
}
render() {
return (
<TouchableHighlight onPress={this.clicked} >
<View style={styles.postItem}>
</View>
</TouchableHighlight>
);
}
clicked() {
console.log("clicked props");
console.log(this.props);
Actions.openPost();
}
}
你的构造函数不应该把'props'作为参数并传递给super? '构造(道具){超级(道具)}' – TAGraves