【发布时间】：2017-11-24 17:21:06
【问题描述】：
我正在尝试在上传帖子时向应用程序的最终用户推送通知。当应用程序处于前台和后台时它工作正常，但在应用程序被杀死或关闭时不显示（不在后台和前台）。有什么方法可以在应用程序关闭时显示通知。 这是我部署到 firebase 函数的 index.js 代码。
const functions = require('firebase-functions');
let admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendPush = functions.database.ref('/promos').onWrite(event => {
var topic = "deals_notification";
let projectStateChanged = false;
let projectCreated = false;
let projectData = event.data.val();
if (((event.data.numChildren())-(event.data.previous.numChildren()))>0) {
let msg="notification arrived"
let payload = {
data: {
"msg":msg
}
};
admin.messaging().sendToTopic(topic, payload).then(function(response) {
console.log("Successfully sent message:", response);
}).catch(function(error) {
console.log("Error sending message:", error);
});
}
});
这里是 MyFirebaseMessageService：
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
public class MyFirebaseMessageService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
sendnotification(remoteMessage.getData().get("msg"));
}
private void sendnotification(String body){
Intent intent = new Intent(this, MainActivity.class);
PendingIntent pIntent = PendingIntent.getActivity(this,0, intent, 0);
Notification.Builder n = new Notification.Builder(this)
.setContentTitle("Best Deals")
.setContentText(body)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(pIntent)
.setAutoCancel(true);
NotificationManager manager = (NotificationManager)
getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(0, n.build());
}
}
编辑：这是清单文件。
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.priya.bestdeals">
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="25" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:name=".Application"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@style/AppTheme.NoActionBar"></activity>
<activity android:name=".LoginActivity" />
<activity android:name=".RegisterActivity" />
<activity android:name=".Details">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="MainActivity" />
</activity>
<activity android:name=".Posts" />
<activity android:name=".Settings" />
<activity android:name=".Postdetails" />
<activity android:name=".IntroActivity" />
<activity
android:name=".SplashScreen"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Black.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".WriteActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="MainActivity" />
</activity>
<activity android:name=".DeleteActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="MainActivity" />
</activity>
<activity android:name=".EditProfile"></activity>
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="@drawable/ic_notifications_black_24dp" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="@color/colorAccent" />
<service
android:name=".MyFirebaseInstanceIdService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
<service
android:name=".MyFirebaseMessageService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
</application>
谢谢。
【问题讨论】：
-
确保在清单中注册您的接收器
-
感谢您的支持。我在编辑中添加了清单。我是使用 Firebase 通知的新手。您能否提及我应该对清单进行哪些更改，以便在关闭应用程序时收到通知。 @portfoliobuilder
-
查看我的答案here（也包含在@BobSnyder 的答案中）。
标签： android node.js firebase push-notification firebase-cloud-messaging