我在应用程序中实现了FCM。其他火池功能正常,即上传到Firebase存储和Firebase实时消息传递。但是,当我第一次将推送通知发送到设备时,它显示了成功发送的通知,但在messageceedived中未调用。然后,当我发送另一份推送通知时,立即显示未注册。然后它总是没有注册。
public class MyFirebaseMessagingService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.d("myLog", "From: " + remoteMessage.getFrom());
Log.d("myLog", "Notification Message Body: " + remoteMessage.getNotification().getBody());
}
}
app.gradle:
apply plugin: 'com.google.gms.google-services'
project.gralde:
classpath 'com.google.gms:google-services:3.1.0'
清单:
<service android:name=".MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
设备令牌可以正确刷新,每当我清除数据并重新打开应用程序时,都会立即打印新的设备令牌。
onMessageCeived(remotemessage remototemessage)基于以下情况为调用的方法。
- fcm响应带有 Notification 和 data block:
{" to ":"设备令牌列表"," Notification ":{"身体":"通知的身体","标题":"通知标题"},," 数据":{"身体":"数据中的通知正文","标题":"标题中的通知标题"," key_1":" key_1的值"," image_url":" www.abc.com/xyz.jpeg"," key_2":" key_2的值"}}
- App在前景中:
onMessageReceived(remotemessage remototemessage)在通知栏中显示gindericon和bigpicture。我们可以从 Notification 和数据> data block
中读取内容- APP在后台:
onMessageReceived(remotemessage remototemessage)未调用,系统托盘将接收消息并从 Notification> Notification block中读取字体和标题,并在通知栏中显示默认消息和标题。
- FCM响应仅使用 data 块:
在这种情况下,删除 notofocation json
块{" to ":"设备令牌列表"," 数据":{"身体":"数据中的通知正文","标题":"标题中的通知标题"," key_1":" key_1的值"," image_url":" www.abc.com/xyz.jpeg"," key_2":" key_2的值"}}
- App在前景中:
onMessageReceived(remotemessage remototemessage)在通知栏中显示gindericon和bigpicture。我们可以从 Notification 和数据> data block
中读取内容- APP在后台:
onMessageReceived(remotemessage remotemessage)呼叫,系统托盘不会因为 notification 键而不会接收消息。在通知栏中显示大型和bigpicture
代码
private void sendNotification(Bitmap bitmap, String title, String
message, PendingIntent resultPendingIntent) {
NotificationCompat.BigPictureStyle style = new NotificationCompat.BigPictureStyle();
style.bigPicture(bitmap);
Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
String NOTIFICATION_CHANNEL_ID = mContext.getString(R.string.default_notification_channel_id);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "channel_name", NotificationManager.IMPORTANCE_HIGH);
notificationManager.createNotificationChannel(notificationChannel);
}
Bitmap iconLarge = BitmapFactory.decodeResource(mContext.getResources(),
R.drawable.mdmlogo);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(mContext, NOTIFICATION_CHANNEL_ID)
.setSmallIcon(R.drawable.mdmlogo)
.setContentTitle(title)
.setAutoCancel(true)
.setSound(defaultSound)
.setContentText(message)
.setContentIntent(resultPendingIntent)
.setStyle(style)
.setLargeIcon(iconLarge)
.setWhen(System.currentTimeMillis())
.setPriority(Notification.PRIORITY_MAX)
.setChannelId(NOTIFICATION_CHANNEL_ID);
notificationManager.notify(1, notificationBuilder.build());
}
参考链接:
https://firebase.google.com/docs/cloud-messaging/android/receive
您正在使用哪种设备进行测试?众所周知,一些小米和Leeco这样的制造商可以防止应用程序接收FCM通知。
如果有三星,摩托罗拉(Motorola)等设备:确保您正在处理正确的消息类型。您可以发送2种类型的FCM消息。
- 通知消息
- 数据消息
阅读此页面以获取更多信息。
https://firebase.google.com/docs/cloud-messaging/concept-options
它取决于来自控制台的哪种类型消息类型。如果仅其通知消息,则您的应用程序已关闭,则您的接收器将不会触发。如果它带有通知消息和数据消息,那么您的应用仍可以在应用程序在Foreground
时处理此消息。确保您正在使用此依赖项compile 'com.google.firebase:firebase-messaging:10.2.1'