问题
I've used react-native-fcm for remote notification in android and iPhone.
react-native-fcm
In Android foreground I'm not be able to getting remote notification in notification bar.
In background mode I'm able to getting notification successfully but some how in foreground doesn't.
Android Manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.nusape">
<application>
<receiver android:name="com.evollu.react.fcm.FIRLocalMessagingPublisher"/>
<receiver android:enabled="true" android:exported="true" android:name="com.evollu.react.fcm.FIRSystemBootEventReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.QUICKBOOT_POWERON"/>
<action android:name="com.htc.intent.action.QUICKBOOT_POWERON"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@mipmap/ic_launcher"/>
<meta-data android:name="com.google.firebase.messaging.default_notification_channel_id" android:value="my_default_channel"/>
<service android:name="com.evollu.react.fcm.MessagingService" android:enabled="true" android:exported="true">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
<service android:name="com.evollu.react.fcm.InstanceIdService" android:exported="false">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
<activity android:launchMode="singleTop" android:configChanges="keyboard|keyboardHidden|orientation|screenSize" android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="fcm.ACTION.HELLO" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
</application>
</manifest>
App.js
async componentDidMount() {
// create NotificationChannel for future use!
FCM.createNotificationChannel({
id: 'my_default_channel',
name: 'Default',
description: 'used for example',
priority: 'high'
});
// initially user get InitialNotification frim the app if any pending
FCM.getInitialNotification().then(notif => {
console.log("getInitialNotification Notification : => ", notif);
// if notif.targetScreen is details screen then it will redirect to details screen directly!
if (notif && notif.targetScreen === "detail") {
setTimeout(() => {
this.props.navigation.navigate("Detail");
}, 500);
}
});
// added notification listener for getting any notification called below function then
this.notificationListener = FCM.on(FCMEvent.Notification, async (notif) => {
console.log("FCMEvent.Notification Notification : => ", notif);
if (Platform.OS === 'ios' && notif._notificationType === NotificationType.WillPresent && !notif.local_notification) {
notif.finish(WillPresentNotificationResult.All);
return;
}
// if user tap to notification bar then open app then below condition will follow up and redirect to details screen!
if (notif.opened_from_tray) {
if (notif.targetScreen === 'detail') {
setTimeout(() => {
navigation.navigate('Detail')
}, 500)
}
setTimeout(() => {
alert(`User tapped notification\n${JSON.stringify(notif)}`)
}, 500)
}
// check whether app is in background or foreground for generate notification
if (AppState.currentState !== 'background'){
this.showLocalNotification(notif);
});
// getting user permission for sending notification or not ?
try {
let result = await FCM.requestPermissions({
badge: true,
sound: true,
alert: true
});
console.log("Notification requestPermissions : => ", result)
} catch (e) {
console.error(e);
}
// Generating token for particular user wise send notification
FCM.getFCMToken().then(token => {
FCM.subscribeToTopic("channelToTopic");
console.log("Notification token : => ", token);
this.setState({ token: token || "" });
});
// Get APNSTOKEN for only ios
if (Platform.OS === "ios") {
FCM.getAPNSToken().then(token => {
console.log("APNS TOKEN (getFCMToken)", token);
});
}
}
// show notification when app is in foreground and getting any new notification
showLocalNotification = (notif) => {
FCM.presentLocalNotification({
channel: 'my_default_channel',
id: new Date().valueOf().toString(),
title: notif.fcm.title,
body: notif.fcm.body,
priority: "high",
badge: 1,
number: 1,
ticker: "My Notification Ticker",
auto_cancel: true,
big_text: "Show when notification is expanded",
sub_text: "This is a subText",
wake_screen: true,
group: "group",
icon: "ic_launcher",
ongoing: true,
my_custom_data: "my_custom_field_value",
lights: true,
show_in_foreground: true
});
};
I'm suffering this issue from last 2 months and not get it well solution for the same as i doing so many new attempt to resolve issue but at the end not getting any succeed.
回答1:
According to the official Github of react-native-fcm, this library is depreciated. You can use the react-native-firebase for generating notification. I was able to get the notifications working in about 2 hours for android. If you want the code I can share it. good luck.
Update - Sorry I couldn't answer earlier because of my office account.
This is my code for showing android foreground notifications.
firebase.messaging()
.subscribeToTopic(this.state.user.user_name)
.then(response => console.log('response from FCM TOPIC' + response))
.catch(error => console.log('error from FCM TOPIC'+ error));
this.notificationListener = firebase.notifications().onNotification(notification => {
let notificationMessage = notification._android._notification._data.action;
let recordId = notification._android._notification._data.recordID;
let { title, body } = notification;
// console.log('ttttt', notification)
// notification.android.setAutoCancel(false)
console.log(title, body, notificationMessage, recordId);
this.getInspectionUserLogs(this.state.user);
const channelId = new firebase.notifications.Android.Channel(
'Default',
'Default',
firebase.notifications.Android.Importance.High
);
firebase.notifications().android.createChannel(channelId);
let notification_to_be_displayed = new firebase.notifications.Notification({
data: notification._android._notification._data,
sound: 'default',
show_in_foreground: true,
title: notification.title,
body: notification.body,
});
if (Platform.OS == 'android') {
notification_to_be_displayed.android
.setPriority(firebase.notifications.Android.Priority.High)
.android.setChannelId('Default')
.android.setVibrate(1000);
}
console.log('FOREGROUND NOTIFICATION LISTENER: \n', notification_to_be_displayed);
firebase.notifications().displayNotification(notification_to_be_displayed);
});
回答2:
As per the library issues listed here you can try two things:
just pass
show_in_foregroundin yourdataproperty in remote notificationandroid shows notification only when app state is killed or background. To display notifications in app foreground, you need to show
local notification.
Sample code:
FCM.on(FCMEvent.Notification, notif => {
if (!notif.opened_from_tray) {
showLocalNotification();
}
});
showLocalNotification() {
FCM.presentLocalNotification({
id: new Date().valueOf().toString(), // (optional for instant notification)
title: "Test Notification with action", // as FCM payload
body: "Force touch to reply", // as FCM payload (required)
show_in_foreground: true // notification when app is in foreground (local & remote)
});
}
Full code is here
回答3:
Which API level you are testing on ? Android API 26 and above requires channels to be created in order to receive notifications in foreground. please read this for more information.
react-native-fcm is also updated to include channels too, refer this
though the library should not be used anymore as the library is not maintained anymore, a good alternative is react-native-firebase.
来源：https://stackoverflow.com/questions/54454217/push-notification-not-showing-in-android-foreground