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我需要幫助，我有一個組件，你的功能是使應用程序的去頭，用左，右的圖標，並在中心是當前頁面的標題。 但是，我可以重新渲染頁面的標題，但圖標不會重新渲染。 我不知道這個解決方案。重新呈現擡頭 - 陣營本地
標題的MyCode。
import React, { Component } from 'react';
import ReactNative from 'react-native';
import { Icon, Text } from './../labsoft.ui';
import styles from './styles';
const Header = ReactNative.StyleSheet.flatten(styles.header);
const BoxHeaderFlex = ReactNative.StyleSheet.flatten(styles.boxHeaderFlex);
const BoxHeaderIcon = ReactNative.StyleSheet.flatten(styles.boxHeaderIcon);
const BoxHeaderTouchable = ReactNative.StyleSheet.flatten(styles.BoxHeaderTouchable);
const BoxHeaderTouchableCenter = ReactNative.StyleSheet.flatten(styles.BoxHeaderTouchableCenter);
interface HeaderProperties {
leftAction?: HeaderLeftAction,
rightAction?: HeaderRightAction,
title?: string;
style?: Style;
}
interface HeaderState {
leftAction?: HeaderLeftAction,
rightAction?: HeaderRightAction,
title?: string;
}
interface HeaderLeftAction {
icon: string;
onClick?:() => void
}
interface HeaderRightAction {
icon: string;
onClick?:() => void
}
interface Style { }
export default class HeaderComponent extends Component<HeaderProperties, HeaderState> {
constructor(props: HeaderProperties) {
super(props);
this.state = {
leftAction: this.props.leftAction,
rightAction: this.props.rightAction,
title: this.props.title
}
}
public setLeftAction(action: HeaderLeftAction) {
this.setState({
leftAction: action
});
}
public setRightAction(action: HeaderRightAction) {
this.setState({
rightAction: action
});
}
public setTitle(title: string) {
this.setState({
title: title
});
}
render() {
console.log('props: ', this.props.rightAction.icon);
console.log('state: ', this.state.rightAction.icon);
let iconRight = this.state.rightAction.icon;
let iconLeft = this.state.leftAction.icon;
return (
<ReactNative.View style={[BoxHeaderFlex, { ...this.props.style }]}>
{
this.state.leftAction != null ?
<Icon icon={iconLeft} onPress={this.state.leftAction.onClick} />
:
<ReactNative.TouchableOpacity style={BoxHeaderTouchable}>
<ReactNative.View>
</ReactNative.View>
</ReactNative.TouchableOpacity>
}
{
this.state.title != null ?
<Text style={BoxHeaderTouchableCenter}>{this.state.title}</Text>
:
<Text style={BoxHeaderTouchableCenter} />
}
{
this.state.rightAction != null ?
<Icon icon={iconRight} onPress={this.state.rightAction.onClick} />
:
<ReactNative.TouchableOpacity style={BoxHeaderTouchable}>
<ReactNative.View>
</ReactNative.View>
</ReactNative.TouchableOpacity>
}
</ReactNative.View >
);
}
}
我在其他頁面更改圖標請求（例如：地理位置）
import React, { Component } from 'react';
import ReactNative from 'react-native';
import { styles, Container, Text } from './labsoft/labsoft.ui';
import App from "./app";
import { BasicPageProperties, BasicPageState, BasicPage } from './interfaces/generics/basicPage';
export interface GeolocationPageProperties extends BasicPageProperties {
}
export interface GeolocationPageState {
latitude: any,
longitude: any,
address: any,
error: any
}
export default class GeolocationPage extends BasicPage<GeolocationPageProperties, GeolocationPageState> {
constructor(props: GeolocationPageProperties) {
super(props);
this.state = {
latitude: null,
longitude: null,
address: null,
error: null,
};
}
componentWillMount() {
this.app.header.setRightAction({
icon: 'star',
onClick:() => { }
})
}
componentDidMount() {
navigator.geolocation.getCurrentPosition(
(position) => {
console.log(position);
this.setState({
latitude: position.coords.latitude,
longitude: position.coords.longitude,
address: "",
error: null,
});
console.log('http://maps.googleapis.com/maps/api/geocode/json?latlng=' + position.coords.latitude + ',' + position.coords.longitude + '&sensor=true');
// fetch('http://maps.googleapis.com/maps/api/geocode/json?latlng=' + position.coords.latitude + ',' + position.coords.longitude + '&sensor=true')
// .then((response) => response.json())
// .then((data) => {
// this.setState({
// latitude: position.coords.latitude,
// longitude: position.coords.longitude,
// address: data.results[0].formatted_address,
// error: null,
// });
// })
// .catch((error) => {
// console.error(error);
// });
},
(error) => this.setState({ error: error.message }),
{ enableHighAccuracy: true, timeout: 10000, maximumAge: 1000 },
);
}
render() {
return (
<Container>
<Text>Latitude: {this.state.latitude}</Text>
<Text>Longitude: {this.state.longitude}</Text>
<Text>Endereço: {this.state.address}</Text>
{this.state.error ? <Text>Error: {this.state.error}</Text> : null}
</Container>
);
}
}
和其他代碼，用於請求更改圖標，但沒有工作
import React, { Component } from 'react';
import ReactNative from 'react-native';
import { Container, Text, Button } from './labsoft/labsoft.ui';
import App from "./app";
import { BasicPageProperties, BasicPageState, BasicPage } from './interfaces/generics/basicPage';
export interface MainProperties extends BasicPageProperties {
}
export interface MainState extends BasicPageState {
}
export default class MainPage extends BasicPage<MainProperties, MainState> {
constructor(props: MainProperties) {
super(props);
}
render() {
return (
<Container>
<Button title="aaa" onPress={() => this.app.openDrawer()} />
<Button title="change right action"
onPress={() => {
this.app.header.setRightAction({
icon: "bars",
onClick:() => {
alert("star");
}
})
}} />
</Container>
);
}
}