📜  react native activityindicator - Javascript(1)

📅  最后修改于: 2023-12-03 15:04:48.826000             🧑  作者: Mango

React Native ActivityIndicator - Javascript

React Native ActivityIndicator is a component that is used for indicating that something is loading or processing. It is a built-in component in React Native and it is really easy to use. In this article, we will learn how to use the React Native ActivityIndicator component.

Installation

To use the React Native ActivityIndicator component, you need to have a React Native project set up. If you do not have a React Native project set up, follow these steps to set up a new project:

  1. Install Node.js and the React Native CLI
  2. Run the following command to create a new React Native project:
react-native init myapp
  1. Change directory to your new project:
cd myapp
  1. Run the following command to start the development server:
npm start
Usage

To use the React Native ActivityIndicator component, follow these steps:

  1. Import the ActivityIndicator component:
import { ActivityIndicator } from 'react-native';
  1. Add the ActivityIndicator component to your view:
<ActivityIndicator />
  1. Customize the ActivityIndicator component as needed by adding props to it:
<ActivityIndicator size="large" color="#0000ff" />

Here are some of the props that you can use to customize the ActivityIndicator component:

  • size: The size of the ActivityIndicator. Possible values: small, large.
  • color: The color of the ActivityIndicator.
  • animating: Whether to animate the ActivityIndicator. Possible values: true, false.
  • hidesWhenStopped: Whether to hide the ActivityIndicator when it is stopped.
Example

Here is an example that shows how to use the React Native ActivityIndicator component:

import React from 'react';
import { View, Text, ActivityIndicator, StyleSheet } from 'react-native';

export default function App() {
  return (
    <View style={styles.container}>
      <Text style={styles.title}>Loading...</Text>
      <ActivityIndicator size="large" color="#0000ff" />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: '#fafafa',
  },
  title: {
    fontSize: 24,
    fontWeight: 'bold',
    marginBottom: 16,
  },
});
Conclusion

React Native ActivityIndicator is a really useful component that can be used to indicate that something is loading or processing. It is really easy to use and it comes with a lot of props that can be used to customize it. If you are building a React Native app, make sure to check out the React Native ActivityIndicator component!