Android 我们的航行速度极慢
在过去的5个月里,我们一直在开发一款应用程序中使用react导航 从昨天起,react navigator开始以4-8秒的延迟导航到屏幕。我已经删除了在screenProps中传递的所有变量,但仍然存在相同的问题 我通过检查navigate()函数执行之前以及组件Willmount()之间的时间来测试延迟,中间有4-8秒。 任何更有经验的人都知道为什么navigate()需要这么长时间 导航器中没有进行任何更改,它只是以这种方式开始工作:| 我正在真正的android设备上进行调试模式测试,但我已经发布了测试版本,延迟仍然存在 我的导航器:Android 我们的航行速度极慢,android,react-native,react-navigation,Android,React Native,React Navigation,在过去的5个月里,我们一直在开发一款应用程序中使用react导航 从昨天起,react navigator开始以4-8秒的延迟导航到屏幕。我已经删除了在screenProps中传递的所有变量,但仍然存在相同的问题 我通过检查navigate()函数执行之前以及组件Willmount()之间的时间来测试延迟,中间有4-8秒。 任何更有经验的人都知道为什么navigate()需要这么长时间 导航器中没有进行任何更改,它只是以这种方式开始工作:| 我正在真正的android设备上进行调试模式测试,但我
import React, { Component } from 'react';
import { createStackNavigator, HeaderBackButton, createAppContainer } from 'react-navigation';
import { colors } from 'assets/styles/colors.js';
import RegistrationInputScreen from 'components/Registration/Input.js';
import RegistrationVerificationScreen from 'components/Registration/Verification.js';
import MainScreen from 'screens/MainScreen';
import Conversation from 'components/Messages/Conversation';
import Private from 'components/FirstTime/Private.js';
import Description from 'components/FirstTime/Description.js';
import CategoriesScreen from 'components/FirstTime/CategoriesScreen.js';
import Professional from 'components/FirstTime/Professional.js';
import Home from 'components/Home.js';
import SecretScreen from 'screens/SecretScreen.js';
import Map from 'components/Map/Map.js';
import ProfileScreen from 'components/Profile/Profile.js';
import EditProfile from 'components/Profile/EditProfile.js';
import PublicProfile from 'components/Profile/PublicProfile.js';
import Settings from 'components/Profile/Settings';
import {setTopLevelNavigator, navigate} from './NavigationService';
export default class RootNavigator extends Component {
constructor(props){
super(props)
}
render() {
console.log("PROPERTIES IN ROOT NAVIGATOR", this.props);
return (
<Navigator />
);
}
}
// ref={navigatorRef => {
// setTopLevelNavigator(navigatorRef);
// }}
export const RootNav = createStackNavigator(
{
RegistrationOptions: {
screen: Home,
navigationOptions: {
header: null
},
},
RegistrationInput: {
screen: RegistrationInputScreen,
navigationOptions: ({navigation}) => (setHeader(null, navigation))
},
RegistrationVerification: {
screen: RegistrationVerificationScreen,
navigationOptions: ({navigation}) => (setHeader('Registration Verification1', navigation))
},
Map: {
screen: Map,
navigationOptions: {
header: null
}
},
MainScreen: MainScreen,
Private: {
screen: Private,
navigationOptions: ({navigation}) => (setHeader('Introduce yourself', navigation))
},
Interests: {
screen: CategoriesScreen,
navigationOptions: ({navigation}) => (setHeader('Back', navigation))
},
Description: {
screen: Description,
navigationOptions: ({navigation}) => (setHeader('Describe yourself', navigation))
},
Professional: {
screen: Professional,
navigationOptions: ({navigation}) => (setHeader('Professional', navigation))
},
Conversation: {
screen: Conversation,
navigationOptions: ({navigation}) => (setHeader(null, navigation))
},
Secret: {
screen: SecretScreen,
navigationOptions: ({navigation}) => (setHeader('Configure app', navigation))
},
Profile: {
screen: ProfileScreen,
navigationOptions: ({navigation}) => (setHeader('Profile', navigation))
},
Public: {
screen: PublicProfile,
navigationOptions: ({navigation}) => (setHeader('Profile', navigation))
},
EditProfile: {
screen: EditProfile,
navigationOptions: ({navigation}) => (setHeader('Edit profile', navigation))
},
Settings: {
screen: Settings,
navigationOptions: ({navigation}) => (setHeader('Settings', navigation))
},
}
);
export const Navigator = createAppContainer(RootNav);
const setHeader = (title=null, navigation) => {
let options = {
title: title,
headerStyle: {
backgroundColor: colors.bgRed,
shadowOpacity: 0,
shadowOffset: {
height: 0,
},
shadowRadius: 0,
elevation: 0
},
headerTitleStyle: { color:colors.white },
headerTransitionPreset: {headerMode: 'screen'},
cardShadowEnabled: false,
headerLeft: (
<HeaderBackButton
tintColor={colors.white} onPress={() => navigation.dispatch({ type: 'Navigation/BACK' }) }
/>
)
}
if(title === null) delete options.title;
return options;
}
import React,{Component}来自'React';
从“反应导航”导入{createStackNavigator、HeaderBackButton、createAppContainer};
从“assets/styles/colors.js”导入{colors};
从“components/Registration/Input.js”导入RegistrationInputScreen;
从“components/Registration/Verification.js”导入注册验证屏幕;
从“屏幕/主屏幕”导入主屏幕;
从“组件/消息/对话”导入对话;
从“components/FirstTime/Private.js”导入Private;
从“components/FirstTime/Description.js”导入说明;
从“components/FirstTime/CategoriesScreen.js”导入分类屏幕;
从“components/FirstTime/Professional.js”导入Professional;
从“components/Home.js”导入Home;
从“screens/SecretScreen.js”导入SecretScreen;
从“components/Map/Map.js”导入地图;
从“components/Profile/Profile.js”导入ProfileScreen;
从“components/Profile/EditProfile.js”导入EditProfile;
从“components/Profile/PublicProfile.js”导入PublicProfile;
从“组件/配置文件/设置”导入设置;
从“/NavigationService”导入{setTopLevelNavigator,navigate};
导出默认类RootNavigator扩展组件{
建造师(道具){
超级(道具)
}
render(){
log(“根导航器中的属性”,this.props);
返回(
);
}
}
//ref={navigatorRef=>{
//setTopLevelNavigator(navigatorRef);
// }}
export const RootNav=createStackNavigator(
{
注册选项:{
屏幕:主页,
导航选项:{
标题:空
},
},
登记投入:{
屏幕:注册输入屏幕,
导航选项:({navigation})=>(setHeader(null,导航))
},
注册验证:{
屏幕:注册验证屏幕,
导航选项:({navigation})=>(setHeader('Registration Verification1',navigation))
},
地图:{
屏幕:地图,
导航选项:{
标题:空
}
},
主屏幕:主屏幕,
私人:{
屏幕:私人,
导航选项:({navigation})=>(setHeader('自我介绍',导航))
},
兴趣:{
屏幕:分类屏幕,
导航选项:({navigation})=>(setHeader('Back',navigation))
},
说明:{
屏幕:描述,
导航选项:({navigation})=>(setHeader('description yourself',navigation))
},
专业人士:{
屏幕:专业,
导航选项:({navigation})=>(setHeader('Professional',导航))
},
对话:{
屏幕:对话,
导航选项:({navigation})=>(setHeader(null,导航))
},
秘密:{
屏幕:SecretScreen,
导航选项:({navigation})=>(setHeader('Configure app',navigation))
},
简介:{
屏幕:ProfileScreen,
导航选项:({navigation})=>(setHeader('Profile',导航))
},
公众:{
屏幕:PublicProfile,
导航选项:({navigation})=>(setHeader('Profile',导航))
},
编辑配置文件:{
屏幕:EditProfile,
导航选项:({navigation})=>(setHeader('editprofile',导航))
},
设置:{
屏幕:设置,
导航选项:({navigation})=>(setHeader('Settings',navigation))
},
}
);
export const Navigator=createAppContainer(RootNav);
const setHeader=(title=null,导航)=>{
让选项={
标题:标题,,
头型:{
背景颜色:colors.bgRed,
阴影不透明度:0,
阴影偏移:{
高度:0,,
},
阴影半径:0,
海拔:0
},
headerTitleStyle:{color:colors.white},
headerTransitionPreset:{headerMode:'screen'},
cardShadowEnabled:false,
左校长:(
分派({type:'navigation/BACK'})}
/>
)
}
如果(title==null)删除options.title;
返回选项;
}
当我遇到导航问题时,它是由我的屏幕渲染造成的,我的屏幕非常沉重。
您的屏幕上可能有一些导致此性能的东西?尝试只返回null代码>在屏幕的渲染中,查看问题是否仍然存在
您使用哪个版本的react导航
出现此问题的原因是在中加载了大量数据
背景或在应用程序中渲染时
例如:如果您有一个项目列表,并且当您进入应用程序时
而且列表数据非常大,整个数据将无法
只需一次渲染,向下滚动列表需要一段时间。所以
在这种情况下,您可以添加分页,如加载更多数据或
过滤器。
尝试检查哪个屏幕中加载了大量数据
因为没有合适的代码,我可以看到问题。但是用react导航动画线程是主要问题。根据我的经验,您可以使用InteractionManager
只需使用下面的代码等待渲染
state = { is_initiated: false };
componentDidMount() {
InteractionManager.runAfterInteractions(() => {
this.setState({'is_initiated': true });
});
}
render() {
if(this.state.is_initiated) {
return (<Component />);
} else {
return (<Loader />);
}
}
state={is_initiated:false};
componentDidMount(){
InteractionManager.runAfterInteractions(()=>{
T
// useIsReady.ts
import { useNavigation } from '@react-navigation/native'
import React from 'react'
const useIsReady = (stack: boolean = true) => {
const navigation = useNavigation()
const [isReady, setIsReady] = React.useState(false)
React.useEffect(() => {
const unsubscribeFocus = navigation.addListener('focus', () => {
if (!isReady) setIsReady(true)
})
const unsubscribeTransitionEnd = stack
? // @ts-ignore
navigation.addListener('transitionEnd', () => {
if (!isReady) setIsReady(true)
})
: undefined
return () => {
unsubscribeFocus()
unsubscribeTransitionEnd && unsubscribeTransitionEnd()
}
}, [])
return isReady
}
export default useIsReady
const HeavyComponentThatMakeNavigationLooksCrap = () => {
const isReady = useIsReady()
return isReady ? ... : <Placeholder />
}
const ScreenWithMultipleHeavyComponents = () => {
const isReady = useIsReady()
return isReady ? ... : <ScreenPlaceholder />
// or
return (
<>
...
{isReady ? ... : <ComponentsPlaceholder />}
</>
)
}