男孩和女孩,我该如何使用Stack Actions在react-navigation中重置路由并使用componentDidUpdate而不是componentDidMount。
有可能吗?
这是我的代码-WorkersView:
import React from 'react';
import { Text, FlatList, View, TouchableOpacity, StatusBar } from 'react-native';
import { Container, Content, ListItem, List, Icon, Fab, Header, Body, Left, Title, Button, Right } from 'native-base';
import { custom, responsive } from '../../styles/config';
import { AntDesign, FontAwesome, MaterialCommunityIcons } from '../../styles/variables/Icons'
import { openDatabase } from 'react-native-sqlite-storage';
var db = openDatabase({ name: 'Database.db' });
export default class WorkersView extends React.Component {
_isUpdated= false;
constructor(props) {
super(props);
this.state = {
data: [],
error: null,
isLoading: true
};
this.arrayholder = [];
this.getAllWorkers();
}
componentDidUpdate() {
this.getAllWorkers();
}
这是我的代码-createWorker:
onButtonPress() {
// const navigateAction = NavigationActions.navigate({
// routeName: 'Workers',
// params: {},
// action: NavigationActions.navigate({ routeName: 'WorkersView' }),
// });
// this.props.navigation.dispatch(navigateAction);
const resetAction = StackActions.reset({
index: 0,
actions: [NavigationActions.navigate({ routeName: 'createWorker' })],
});
const goHome = NavigationActions.navigate({
routeName: 'Workers',
params: {}
})
this.props.navigation.dispatch(resetAction);
this.props.navigation.dispatch(goHome);
}
我不想使用componentDidMount我想使用componentDidUpdate。现在stackaction可以工作了,但是在WorkersView中,我遇到了这个错误:
警告:无法在已卸载的组件上调用setState(或forceUpdate)。这是空操作,但它表明应用程序中发生内存泄漏。要修复此问题,请取消componentWillUnmount方法中的所有订阅和异步任务。
答案 0 :(得分:0)
您正在尝试同时进入两个不同的屏幕,即屏幕createWorker
和Workers
。只要做:
const resetAction = StackActions.reset({
index: 0,
actions: [NavigationActions.navigate({ routeName: 'createWorker' })],
});
this.props.navigation.dispatch(resetAction);