Android Firebase可扩展通知在应用程序处于后台时显示图像
我在Android中实现FCM通知,但根据应用程序状态(后台和前台),通知有何区别 我使用带有邮递员的FCM API发送通知,这是通知结构:Android Firebase可扩展通知在应用程序处于后台时显示图像,android,background,push-notification,firebase-cloud-messaging,Android,Background,Push Notification,Firebase Cloud Messaging,我在Android中实现FCM通知,但根据应用程序状态(后台和前台),通知有何区别 我使用带有邮递员的FCM API发送通知,这是通知结构: { "notification": { "title": "Notification title", "body": "Notification message", "sound": "default", "color": "#53c4bc", "click_action": "MY_BOOK"
{ "notification": {
"title": "Notification title",
"body": "Notification message",
"sound": "default",
"color": "#53c4bc",
"click_action": "MY_BOOK",
"icon": "ic_launcher"
},
"data": {
"main_picture": "URL_OF_THE_IMAGE"
},
"to" : "USER_FCM_TOKEN"
}
要渲染的图像取自data.main\u picture
我已经实现了我自己的FirebaseMessagingService
,它可以使通知在前台状态下完美显示。通知代码是下一个:
NotificationCompat.BigPictureStyle notiStyle = new NotificationCompat.BigPictureStyle();
notiStyle.setSummaryText(messageBody);
notiStyle.bigPicture(picture);
Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(bigIcon)
.setContentTitle(title)
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent)
.setStyle(notiStyle); code here
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
然而,在后台,甚至不执行服务。在AndroidManifest.xml
中,Firebase服务声明如下:
<service
android:name=".MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
<service
android:name=".MyFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
我的问题不是大图标
或小图标
,而是显示大图
感谢您的支持。FCM
通知消息
不支持largeIcon或bigPicture
如果您在后台需要它们,可以使用FCM数据消息
对于数据消息,始终调用onMessageReceived(message)
方法,因此您可以使用message.getData()方法创建自定义通知
在此处阅读有关通知消息与数据消息的更多信息:
如果您希望应用程序的系统托盘中只有一个通知,则以下解决方案可以解决此问题,直到FCM提出正确的解决方案
从清单中删除MyFirebaseMessagingService
<service android:name=".MyFirebaseMessagingService"> <intent-filter> <action android:name="com.google.firebase.MESSAGING_EVENT"/> </intent-filter> </service>
MyGcmReceiver扩展GcmReceiver类并更正通知逻辑
在清单中添加MyGcmReceiver
<receiver
android:name=".MyGcmReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="package_name" />
</intent-filter>
</receiver>
在通知通知之前取消所有通知。(否则firebase也会在应用程序处于后台时显示通知)
请参阅myFirebaseMessagingService
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "FirebaseMessageService";
Bitmap bitmap;
/**
* Called when message is received.
*
* @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
*/
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
// There are two types of messages data messages and notification messages. Data messages are handled
// here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
// traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
// is in the foreground. When the app is in the background an automatically generated notification is displayed.
// When the user taps on the notification they are returned to the app. Messages containing both notification
// and data payloads are treated as notification messages. The Firebase console always sends notification
// messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
//
Log.d(TAG, "From: " + remoteMessage.getFrom());
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0) {
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
//The message which i send will have keys named [message, image, AnotherActivity] and corresponding values.
//You can change as per the requirement.
//message will contain the Push Message
String message = remoteMessage.getData().get("message");
//imageUri will contain URL of the image to be displayed with Notification
String imageUri = remoteMessage.getData().get("image");
//If the key AnotherActivity has value as True then when the user taps on notification, in the app AnotherActivity will be opened.
//If the key AnotherActivity has value as False then when the user taps on notification, in the app MainActivity will be opened.
String TrueOrFlase = remoteMessage.getData().get("AnotherActivity");
//To get a Bitmap image from the URL received
bitmap = getBitmapfromUrl(imageUri);
sendNotification(message, bitmap, TrueOrFlase);
}
/**
* Create and show a simple notification containing the received FCM message.
*/
private void sendNotification(String messageBody, Bitmap image, String TrueOrFalse) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("AnotherActivity", TrueOrFalse);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setLargeIcon(image)/*Notification icon image*/
.setSmallIcon(R.drawable.firebase_icon)
.setContentTitle(messageBody)
.setStyle(new NotificationCompat.BigPictureStyle()
.bigPicture(image))/*Notification with Image*/
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
/*
*To get a Bitmap image from the URL received
* */
public Bitmap getBitmapfromUrl(String imageUrl) {
try {
URL url = new URL(imageUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(input);
return bitmap;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
}
您可以使用此rest客户端工具发送消息。使用此工具,您也可以在后台和前台向客户端应用程序发送消息。
要使用API发送消息,您可以使用名为AdvancedREST客户端的工具(它是一个chrome扩展)并发送带有以下参数的消息
Rest客户端工具链接:
使用此url:-Content-Type:application/json-Authorization:key=您的服务器密钥来自或授权密钥(请参见下文参考)
{“数据”:{“图像”:“消息”:“Firebase使用API推送消息”“其他活动”:“True”},“到”:“设备id或设备令牌”}
通过访问Google开发者控制台并单击项目左侧菜单上的Credentials按钮,可以获得授权密钥。在列出的API密钥中,服务器密钥将是您的授权密钥
您需要将接收方的tokenID放在使用API发送的POST请求的“to”部分
这段安卓代码
//消息将包含推送消息
String message = remoteMessage.getData().get("message1");
//imageUri will contain URL of the image to be displayed with Notification
String imageUri = remoteMessage.getData().get("image");
//If the key AnotherActivity has value as True then when the user taps on notification, in the app AnotherActivity will be opened.
//If the key AnotherActivity has value as False then when the user taps on notification, in the app MainActivity2 will be opened.
String TrueOrFlase = remoteMessage.getData().get("AnotherActivity");
//To get a Bitmap image from the URL received
bitmap = getBitmapfromUrl(imageUri);
sendNotification(message, bitmap, TrueOrFlase);
如果您的问题与显示大图像有关,即如果您从firebase控制台发送带有图像的推送通知,并且仅当应用程序位于前台时,才会显示图像。这个问题的解决方案是发送一个只包含数据字段的推送消息
{ "data": { "image": "https://static.pexels.com/photos/4825/red-love-romantic-flowers.jpg", "message": "Firebase Push Message Using API" "AnotherActivity": "True" }, "to" : "device id Or Device token" }
这无疑解决了问题。从Firebase控制台发送大画面通知:
适用于后台和前台应用程序
代替onMessageReceived
,重写FirebaseMessagingService
的zzm()
,并从此处创建自定义通知
@Override
public void zzm(Intent intent) {
Log.e(TAG, "zzm : " + intent);
createBigPictureNotification();
}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
}
“数据”键需要存在于推送通知包中
除了以上的答案之外,,
如果您正在使用FCM控制台测试推送通知,则“数据”键和对象不会添加到推送通知包中。所以,当应用程序处于后台或被终止时,您将不会收到详细的推送通知
在这种情况下,您必须选择后端管理控制台来测试应用程序后台场景
在这里,您将向推包添加“数据”键。因此,详细的推送将按预期显示。
希望这对您的帮助不大。包含通知和数据有效负载(如您与邮递员一起发送的示例)的消息将由FCM库自动显示给最终用户设备。这不包括(大)图像
我想你有两种可能:
试试Rashmi Jain的建议。但是,如果Firebase库被更新(从而消息处理的实现),该解决方案可以立即工作,明天停止工作
与邮递员一起发送数据消息。因此,您可能无法在JSON中填充通知对象,因此它可能看起来像这样:
{
"message": {
"token":"bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
"data":{
"title" : "Awesome title",
"body" : "Your awesome push notification body",
"image" : "your_image_url"
}
}
}
我更喜欢第二种选择。祝你好运 例如,如果要发送推送通知,则在数据中获取所有必需的内容,而不是通知
{
"data": {
"main_picture": "URL_OF_THE_IMAGE",
"title": "Notification title",
"click_action": "MY_BOOK",
"color": "#53c4bc",
},
"to" : "USER_FCM_TOKEN"
}
删除通知对象并从数据对象获取所有值
希望它对您有用。如果2019年这里有一些土地,您只需在通知对象中添加一个图像字段即可:
{
notification: {
title: title,
body: body,
image: "http://path_to_image"
},
data: {
click_action: "FLUTTER_NOTIFICATION_CLICK",
your_data: ...,
},
token: token
}
我已经在Android上使用Flatter对它进行了测试,我认为它可以在原生Android上运行,因为它们可能都使用相同的原生SDK。更新2019年8月
[因为py不支持通知的最新更改而浪费了几天]
只需将image=url添加到通知对象中即可
它在本机Android中工作。只需将图像
添加到通知对象中即可。另外请注意,Python库中不存在图像字段。[截至8月19日]
我使用了PHP和这个库
它超级简单,更重要的是,当应用程序在后台或被杀死时,它可以用于大图像通知
代码:
推送5完全取决于接收到的推送请求,以及设备功能,如某些设备的电池saber会影响所有功能
<?php
require __DIR__.'/vendor/autoload.php';
require __DIR__.'/simple_html_dom.php';
use Kreait\Firebase;
use Kreait\Firebase\ServiceAccount;
use Kreait\Firebase\Messaging\Notification;
use Kreait\Firebase\Messaging\CloudMessage;
$serviceAccount = ServiceAccount::fromJsonFile('/path/to/cred.json');
$firebase = (new Firebase\Factory())->withServiceAccount($serviceAccount)->create();
$messaging = $firebase->getMessaging();
// this works when app is closed or in bg
$notification = Notification::fromArray([
'title' => $title,
'body' => $body,
'image' => $imageUrl,
]);
// for foreground process
$data = [
'image' => $imageUrl,
'news_id' => $news_id,
];
$topic = 'default_topic1';
$message = CloudMessage::withTarget('topic', $topic)
->withNotification($notification) // optional
->withData($data);
$messaging->send($message);
print_r($message);