Expo 推送通知设置

{
  "expo": {
    %%placeholder-start%%... %%placeholder-end%%
    "plugins": [
      %%placeholder-start%%... %%placeholder-end%%
      "expo-notifications"
      ]
  }
}

import { useState, useEffect, useRef } from 'react';
import { Text, View, Button, Platform } from 'react-native';
import * as Device from 'expo-device';
import * as Notifications from 'expo-notifications';
import Constants from 'expo-constants';

Notifications.setNotificationHandler({
  handleNotification: async () => ({
    shouldPlaySound: true,
    shouldSetBadge: true,
    shouldShowBanner: true,
    shouldShowList: true,
  }),
});

async function sendPushNotification(expoPushToken: string) {
  const message = {
    to: expoPushToken,
    sound: 'default',
    title: 'Original Title',
    body: 'And here is the body!',
    data: { someData: 'goes here' },
  };

  await fetch('https://exp.host/--/api/v2/push/send', {
    method: 'POST',
    headers: {
      Accept: 'application/json',
      'Accept-encoding': 'gzip, deflate',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(message),
  });
}

function handleRegistrationError(errorMessage: string) {
  alert(errorMessage);
  throw new Error(errorMessage);
}

async function registerForPushNotificationsAsync() {
  if (Platform.OS === 'android') {
    await Notifications.setNotificationChannelAsync('default', {
      name: 'default',
      importance: Notifications.AndroidImportance.MAX,
      vibrationPattern: [0, 250, 250, 250],
      lightColor: '#FF231F7C',
    });
  }

  if (Device.isDevice) {
    const { status: existingStatus } = await Notifications.getPermissionsAsync();
    let finalStatus = existingStatus;
    if (existingStatus !== 'granted') {
      const { status } = await Notifications.requestPermissionsAsync();
      finalStatus = status;
    }
    if (finalStatus !== 'granted') {
      handleRegistrationError('Permission not granted to get push token for push notification!');
      return;
    }
    const projectId =
      Constants?.expoConfig?.extra?.eas?.projectId ?? Constants?.easConfig?.projectId;
    if (!projectId) {
      handleRegistrationError('Project ID not found');
    }
    try {
      const pushTokenString = (
        await Notifications.getExpoPushTokenAsync({
          projectId,
        })
      ).data;
      console.log(pushTokenString);
      return pushTokenString;
    } catch (e: unknown) {
      handleRegistrationError(`${e}`);
    }
  } else {
    handleRegistrationError('Must use physical device for push notifications');
  }
}

export default function App() {
  const [expoPushToken, setExpoPushToken] = useState('');
  const [notification, setNotification] = useState<Notifications.Notification | undefined>(
    undefined
  );

  useEffect(() => {
    registerForPushNotificationsAsync()
      .then(token => setExpoPushToken(token ?? ''))
      .catch((error: any) => setExpoPushToken(`${error}`));

    const notificationListener = Notifications.addNotificationReceivedListener(notification => {
      setNotification(notification);
    });

    const responseListener = Notifications.addNotificationResponseReceivedListener(response => {
      console.log(response);
    });

    return () => {
      notificationListener.remove();
      responseListener.remove();
    };
  }, []);

  return (
    <View style={{ flex: 1, alignItems: 'center', justifyContent: 'space-around' }}>
      <Text>Your Expo push token: {expoPushToken}</Text>
      <View style={{ alignItems: 'center', justifyContent: 'center' }}>
        <Text>Title: {notification && notification.request.content.title} </Text>
        <Text>Body: {notification && notification.request.content.body}</Text>
        <Text>Data: {notification && JSON.stringify(notification.request.content.data)}</Text>
      </View>
      <Button
        title="按下以发送通知"
        onPress={async () => {
          await sendPushNotification(expoPushToken);
        }}
      />
    </View>
  );
}