How to Display Alert Message in React Native

Hey there, fellow developers! If you're diving into the exciting world of React Native with Expo, you've probably realized the importance of user interaction and feedback in your app. One essential feature is displaying alert messages to communicate information or gather input from users.

In this step-by-step guide, I'll walk you through the process of creating a straightforward React Native app using Expo and show you how to display alert messages.

In this article, we'll see how to display alert messages in react native, react native display an alert message, and how to create a custom alert dialog in react native, react native alert dialog.

By the end, you'll have a solid understanding of using Expo's built-in components to create simple yet effective alerts.

So, let's jump in and make our React Native app a bit more interactive! 🚀

If you haven't already, create a new React Native project using Expo. Open your terminal and run:

expo init YourAlertApp
cd YourAlertApp

Choose a template or a blank project when prompted.

Expo comes with its own set of UI components, including Alert. You don't need to install any additional packages.

Create a new component file, e.g., AlertComponent.js in the project's components folder.

// components/AlertComponent.js
import React from 'react';
import { View, Button, Alert } from 'react-native';

const AlertComponent = () => {
  const showAlert = () => {
    Alert.alert(
      'Alert Title',
      'This is the alert message.',
      [
        { text: 'OK', onPress: () => console.log('OK Pressed') }
      ],
      { cancelable: false }
    );
  };

  return (
    <View>
      <Button title="Show Alert" onPress={showAlert} />
    </View>
  );
};

export default AlertComponent;

Now, import and use the AlertComponent in your App.js file.

// App.js
import React from 'react';
import { StyleSheet, View } from 'react-native';
import AlertComponent from './components/AlertComponent';

export default function App() {
  return (
    <View style={styles.container}>
      <AlertComponent />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});

Save the files and run your app using:

expo start

You can open your app in the Expo Go app on your device or an emulator. Press the "Show Alert" button, and you should see the alert message.

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