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Getting Started with Mobile App Development with React Native

Alert

Explore the React Native Alert API to display essential warnings and confirmation dialogs. Learn to customize alerts with titles, messages, buttons, and behaviors to enhance user interaction and decision-making in your apps.

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The Alert API is used to show essential information and warning messages to users. It can also be used to interrupt a user and ask them for a final confirmation of their decision before proceeding. For example, the Alert API can be displayed to show a warning message if the user is about to delete a system-related file.

Usage

To implement and use the Alert API, we first have to import it from the react-native library.

JavaScript (JSX)
import { Alert } from 'react-native';

Once the Alert API has been imported, we can use it inside our application using the alert method of the Alert API.

JavaScript (JSX)
import React from "react";
import { SafeAreaView, Button, Alert } from "react-native";
const App = () => {
  return (
    <SafeAreaView>
      <Button
        title = 'Click me'
        onPress={() => Alert.alert('Hello World')}
      />
    </SafeAreaView>
  );
};
export default App;

Customizing alerts

We ...