This article is about fixing VirtualizedLists should never be nested inside plain ScrollViews with the same orientation because it can break windowing and other functionality - use another VirtualizedList-backed container instead in sauzy34 react-native-multi-selectbox
  • 01-Feb-2023
Lightrun Team
Author Lightrun Team
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This article is about fixing VirtualizedLists should never be nested inside plain ScrollViews with the same orientation because it can break windowing and other functionality - use another VirtualizedList-backed container instead in sauzy34 react-native-multi-selectbox

VirtualizedLists should never be nested inside plain ScrollViews with the same orientation because it can break windowing and other functionality – use another VirtualizedList-backed container instead.VirtualizedLists should never be nested inside plain ScrollViews with the same orientation because it can break windowing and other functionality – use another VirtualizedList-backed container instead in sauzy34 react-native-multi-selectbox

Lightrun Team
Lightrun Team
01-Feb-2023

Explanation of the problem

The issue of VirtualizedLists being nested inside plain ScrollViews with the same orientation is a common problem in React Native development. This problem can lead to the malfunctioning of windowing and other functionalities.

The root cause of this problem lies in the architecture of the VirtualizedList and the ScrollView components. VirtualizedList is designed to handle large data sets efficiently, by only rendering the visible items. On the other hand, ScrollView is a basic scrolling container that can hold multiple components. When VirtualizedList is nested inside a plain ScrollView with the same orientation, it can cause issues with the windowing and other functionalities of the VirtualizedList component.

To resolve this issue, it is recommended to use another VirtualizedList-backed container instead of nesting the VirtualizedList inside a plain ScrollView with the same orientation. By using another VirtualizedList-backed container, the windowing and other functionalities of the VirtualizedList component will work as expected and the issue will be resolved. This approach will ensure the proper functioning of the VirtualizedList component and prevent any potential issues with windowing and other functionalities.

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Problem solution for VirtualizedLists should never be nested inside plain ScrollViews with the same orientation because it can break windowing and other functionality – use another VirtualizedList-backed container instead.

VirtualizedLists are a powerful tool for optimizing large lists in React Native, but it is important to use them correctly to avoid breaking functionality. One common mistake is to nest VirtualizedLists inside plain ScrollViews with the same orientation, which can cause issues with windowing and other aspects of the user interface.

To solve this problem, it is recommended to use another VirtualizedList-backed container instead of a plain ScrollView. This will ensure that the windowing and other functionality of the VirtualizedList is preserved, even when nested inside another container.

Here is an example of how to properly use a VirtualizedList inside another VirtualizedList-backed container in React Native:

import { VirtualizedList } from 'react-native';

const InnerVirtualizedList = ({ data, renderItem }) => (
  <VirtualizedList
    data={data}
    renderItem={renderItem}
    keyExtractor={item => item.id}
  />
);

const OuterVirtualizedList = ({ data, renderItem }) => (
  <VirtualizedList
    data={data}
    renderItem={({ item }) => <InnerVirtualizedList data={item.innerData} renderItem={renderItem} />}
    keyExtractor={item => item.id}
  />
);

By using a VirtualizedList-backed container instead of a plain ScrollView, we ensure that the functionality of the VirtualizedList remains intact, even when nested inside another container.

Other popular problems with sauzy34 react-native-multi-selectbox

Problem: Incorrect font size

One of the most common problems with the react-native-multi-selectbox library is incorrect font size. The font size may appear smaller or larger than expected, leading to a poor user experience.

Solution:

To solve this issue, you can modify the font size by adding the fontSize property to the multiSelect component, as shown in the code example below:

<MultiSelect
  fontSize={16}
  ...
/>

By setting the font size explicitly, you can ensure that the text within the multiSelect component is displayed at the correct size.

Problem: Inaccurate item height

Another common issue with the react-native-multi-selectbox library is inaccurate item height. This can lead to items appearing cramped or too spaced out, affecting the overall appearance of the select box.

Solution:

To resolve this problem, you can specify the height of the items by using the itemHeight property, as shown in the code example below:

<MultiSelect
  itemHeight={40}
  ...
/>

By specifying the height of the items, you can control the appearance of the select box and ensure that it looks consistent across different devices.

Problem: Inconsistent item padding

A third common problem with the react-native-multi-selectbox library is inconsistent item padding. This can lead to items appearing too close together or too far apart, affecting the overall look of the select box.

Solution:

To fix this issue, you can control the padding of the items by using the itemPadding property, as shown in the code example below:

<MultiSelect
  itemPadding={10}
  ...
/>

By specifying the padding of the items, you can ensure that the select box looks consistent and has the desired appearance, even on different devices and screen sizes.

A brief introduction to sauzy34 react-native-multi-selectbox

The sauzy34 react-native-multi-selectbox is a UI component designed to provide a convenient way to select multiple items from a list in a React Native application. This component uses VirtualizedList to optimize the performance of large lists, and supports various configuration options such as multi-select, single select, searchable dropdown, and more. The react-native-multi-selectbox provides a clean and intuitive user interface that allows users to easily make selections from a list of items.

The sauzy34 react-native-multi-selectbox component is implemented in pure JavaScript and does not depend on any external libraries, making it easy to integrate into any React Native project. This component is highly customizable, allowing developers to adjust its appearance and behavior to match the specific needs of their application. The sauzy34 react-native-multi-selectbox is well documented and provides clear and concise examples, making it easy for developers to quickly get up and running with this component in their React Native projects.

Most popular use cases for sauzy34 react-native-multi-selectbox

  1. Implementing Multi-Select Functionality The sauzy34 react-native-multi-selectbox component is specifically designed to provide multi-select functionality in React Native applications. With this component, users can select multiple items from a list, making it ideal for use cases such as filtering, tagging, and more.
<MultiSelect
  items={items}
  uniqueKey="id"
  onSelectedItemsChange={onSelectedItemsChange}
  selectedItems={selectedItems}
  selectText="Pick Items"
  searchInputPlaceholderText="Search Items..."
  onChangeInput={text => console.log(text)}
  altFontFamily="ProximaNova-Light"
  tagRemoveIconColor="#CCC"
  tagBorderColor="#CCC"
  tagTextColor="#CCC"
  selectedItemTextColor="#CCC"
  selectedItemIconColor="#CCC"
  itemTextColor="#000"
  displayKey="name"
  searchInputStyle={{ color: '#CCC' }}
  submitButtonColor="#CCC"
  submitButtonText="Submit"
/>
  1. Adding Searchable Dropdown Menus The sauzy34 react-native-multi-selectbox component also provides the ability to add searchable dropdown menus to React Native applications. This makes it easier for users to quickly find and select items from large lists, and can greatly improve the user experience.
  2. Improving Performance of Large Lists The sauzy34 react-native-multi-selectbox component uses VirtualizedList to optimize the performance of large lists, making it a great choice for use cases that require efficient handling of large amounts of data. This can greatly improve the overall performance and responsiveness of React Native applications, even when working with large lists of items.
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