新的反应本地人。我正在创建一个注册表单,其中我已经创建了一个表单向导,每个步骤都有一个不同的组件。我想从父组件处理每个输入的状态。
错误:
Invariant Violation: Invariant Violation: Invariant Violation: Invariant Violation: Objects are not valid as a React child (found:
object with keys {_40, _65, _55, _72}). If you meant to render a
collection of children, use an
这似乎是更新或其他性质不明确的东西导致我的应用程序崩溃的原因。每当我加载一个动画组件或视图(滚动视图、区段列表等)时,应用程序本身就只会出现以下错误。
[tid:com.facebook.react.JavaScript] Invariant Violation: Invariant Violation: Attempt to get native tag from node not marked as "native"
This error is located at:
in AnimatedComponent (at StackViewCard.js:41)
我正在尝试呈现一个组件,但只在从服务器获得响应之后。由于某些原因,它看起来就像reason仍然试图挂载组件,即使条件仍然是假的。
在访问数组之前,我试图添加一些预检查,但是错误仍然存在。见下面的代码:
MyComponent.js
import React, { useEffect, useState } from 'react'
import MapView, { PROVIDER_GOOGLE } from 'react-native-maps'; // remove PROVIDER_GOOGLE import if not using Google Ma
我得到了这个错误,而工作在反应本机,我不知道这是为什么会发生。我得到这个错误,然后应用程序重新加载自动。我想这个在一些包裹里用过。我的应用程序中没有使用任何拆分功能。
[Mon Dec 28 2020 00:06:36.425] ERROR TypeError: source.split is not a function. (In 'source.split('\n')', 'source.split' is undefined)
This error is located at:
in SvgXml (at reg
有谁能帮我排除故障吗?
我试图搜索本地JSON文件并返回相关数据。我的JSON文件包含一个餐馆名称和餐馆类型。
我不明白这个问题可能是从哪里来的。当我注释掉ListHeadComponent={this.renderHeader}时,没有错误;但是,如果我注释掉它,什么都不会显示。
我得到的问题是:
Invariant Violation: Invariant Violation: Tried to get frame for out of range index NaN
This error is located at:
in VirtualizedList (at FlatLis
我正在尝试在我的react应用程序中实现一个功能组件:,以下是警告:
Warning: Each child in a list should have a unique "key" prop.
Check the render method of `ViewCode`
in Fragment
in ViewCode (at App.js:87)
in Route (at App.js:86)
in Switch (at App.js:72)
in main (created by Basic)
in Basic (create
未处理的JS异常:不变冲突: requireNativeComponent:"AIRMap“未在UIManager.中找到
此错误位于: in AIRMap (at MapView.js:760) in MapView (at App.js:25) in RCTView (at View.js:43) in App (at renderApplication.js:32) in RCTView (at View.js:43) in RCTView (at View.js:43) in AppContainer (at renderApplication.js:31)
如何修复本
嗨,我试图将forwardRef添加到子组件中,但是在添加forwardRef时得到了以下信息:TypeError: Component is not a function
该组成部分的定义如下:
import React from 'react';
import { forwardRef } from 'react';
import { TextInputFocusEventData } from 'react-native';
import { NativeSyntheticEvent, StyleSheet } from 'reac
我从手册中复制粘贴了一个Picker示例,但经常会出现以下错误:
TypeError:无法读取未定义的属性值
此错误位于: in PickerAndroid (at Picker.js:158) in Picker (at NewNotification.js:32) in RCTView (at View.js:60) in View (at KeyboardAvoidingView.js:196) in KeyboardAvoidingView (at NewNotification.js:23) in NewNotification (at SceneView.js:9) in Sce
可以在android平台上运行的React Native应用程序中使用Ag-grid数据网格吗?
我尝试了类似于react web应用程序的步骤,在logcat中得到了以下类型的错误,
ReactNativeJS ▶︎ Invariant Violation: View config not found for name div. Make sure to start component names with a capital letter.
│
│ Thi
我不知道为什么我要面对这个问题。如果有人知道如何处理它,所以请帮助。提前感谢
Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in %s.%s, the componentWillUnmount method,
in ToastContai
所以我一直在尝试集成@homee/react-native-mapbox-navigation,我已经完全按照的安装说明做了3次了。我继续收到以下错误,这是来自模拟器的:
这是来自控制台的:
Invariant Violation: requireNativeComponent: "MapboxNavigation" was not found in the UIManager.
This error is located at:
in MapboxNavigation (at react-native-mapbox-navigation/index.js:
我正在调用网页中的javascript
webBrowser2.Document.InvokeScript("download_file");`.
此javascript打开对话,要求用户保存或打开文件。我想将文件直接保存到路径中,而不向用户显示对话。我怎样才能做到这一点。我在刮网页。我正在从网页中提取所需的详细信息。
download_file()
function download_file() {
var summaryFlag = 0;
if (document.getElementById("frmincludefilesummary"
从字面上讲,这件事已经持续了4个小时。我不断地发现错误:
Invalid attempt to destructure non-iterable instance. In order to be iterable, non-array objects must have a [Symbol.iterator]() method.
我试图根据用户是否登录来有条件地呈现组件。这是我的密码
const App = () => {
const [isLoggedIn, setIsLoggedIn] = React.useState(false);
const AppBody = () =
我正在尝试使用这个AutoForm包,但是当我尝试他们自己的代码时,这个错误出现了。
TypeError: dtp.setDate is not a function
at null.<anonymous> (aldeed_autoform-bs-datetimepicker.js:141)
at view.js:199
at Function.Template._withTemplateInstanceFunc (template.js:457)
at view.js:197
at Object.Blaze._withCurrentView (view.js:538)
at vi
我知道关于这个错误已经有很多类似的帖子了,但是没有一个能解决我的问题。
我一直试图在我的项目上设置,但是我一直收到以下错误:
Invariant Violation: Native component for "RNCardView" does not exist
This error is located at:
in RCTText (at Text.js:548)
in Text (at Button.js:137)
in RCTView (at View.js:71)
in View (at Button.js:136)
in
我面临一个问题,我可以登录到我的反应本地应用程序的ios方面的事情,但我不能登录到安卓方面的东西。
我在logcat中遇到的错误是:
2019-08-28 14:33:01.638 31244-17613/com.nfibengage E/ReactNativeJS: TypeError: undefined is not an object (evaluating 'personalDetails.firstName')
This error is located at:
in DetailsConfirmation (created by Conn