未接收到android fcm通知，而应该接收该通知的设备在Logcat中显示此消息（从FCM TITLE接收：null，从FCM BODY接收：null）。我已经检查过<26和> 26 SDK版本
均未收到通知==================== MyFirebaseMessagingService ========================== =====
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String channel_id = "the_id";
@Override
public void onNewToken(String s) {
super.onNewToken(s);
Log.e("NEW_TOKEN",s);
updateTokenToFirebase(s);
}
private void updateTokenToFirebase(String token) {
IDrinkShopAPI mService = Common.getAPI();
mService.updateToken("SERVER_01",token,"0")
.enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
Log.d("DEBUG_TOKEN",response.body());
}
@Override
public void onFailure(Call<String> call, Throwable t) {
Log.d("DEBUG_TOKEN",t.getMessage());
}
});
}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
if(remoteMessage.getData() != null){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
sendNotification26(remoteMessage);
else
sendNotification(remoteMessage);
}
}
private void sendNotification26(RemoteMessage remoteMessage) {
Map<String,String> data = remoteMessage.getData();
String title = data.get("title");
String message = data.get("message");
NotificationHelper helper ;
Notification.Builder builder;
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
helper = new NotificationHelper(this);
builder = helper.getDrinkShopNotification(title,message,defaultSoundUri);
helper.getManager().notify(new Random().nextInt(),builder.build());
}
private void sendNotification(RemoteMessage remoteMessage) {
Map<String,String> data = remoteMessage.getData();
String title = data.get("title");
String message = data.get("message");
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setContentText(message)
.setAutoCancel(true)
.setSound(defaultSoundUri);
NotificationManager mn =(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
mn.notify(new Random().nextInt(),builder.build());
}
}
======================== NotificationHelper ===================== ===========
//this class is used to implement notification for all android versions
public class NotificationHelper extends ContextWrapper {
private static final String CHANNEL_ID = "the_id";
private static final String CHANNEL_NAME = "Drink_Shop";
private NotificationManager notificationManager;
public NotificationHelper(Context base) {
super(base);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
createChannel();
}
@TargetApi(Build.VERSION_CODES.O)
private void createChannel() {
NotificationChannel nc = new NotificationChannel(CHANNEL_ID,CHANNEL_NAME,
NotificationManager.IMPORTANCE_DEFAULT);
nc.enableLights(false);
nc.enableVibration(true);
nc.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
getManager().createNotificationChannel(nc);
}
public NotificationManager getManager() {
if(notificationManager == null)
notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
return notificationManager;
}
@TargetApi(Build.VERSION_CODES.O)
public Notification.Builder getDrinkShopNotification(String title,
String message,
Uri soundUri)
{
return new Notification.Builder(getApplicationContext(),CHANNEL_ID)
.setContentTitle(title)
.setContentText(message)
.setSmallIcon(R.mipmap.ic_launcher)
.setSound(soundUri)
.setChannelId(CHANNEL_ID)
.setAutoCancel(true);
}
}
============================清单================= =====================
<service
android:name=".Services.MyFirebaseMessagingService"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
=========================== Build.gradle ================= ====================
implementation 'com.google.firebase:firebase-messaging:20.0.0'
implementation 'com.google.firebase:firebase-core:17.2.1'
implementation 'com.google.android.gms:play-services-auth:17.0.0'
========================== IFCMService =================== ====================
public interface IFCMService {
@Headers({
"Content-Type:application/json",
"Authorization:mytoken"
})
@POST("fcm/send")
Call<MyResponse> sendNotification(@Body DataMessage body);
}
========================= sendNotificationToServer ==================== ==========
//此方法用于将通知发送到服务器设备
private void sendNotificationToServer(OrderResult orderResult) {
mService.getToken("SERVER_01", "1")
.enqueue(new Callback<Token>() {
@Override
public void onResponse(Call<Token> call, Response<Token> response) {
Map<String,String> contentSend = new HashMap<>();
contentSend.put("title","NEW ORDER");
contentSend.put("message","You have got new order" + orderResult.getOrderId());
DataMessage dataMessage = new DataMessage();
if(response.body().getToken() != null)
dataMessage.setTo(response.body().getToken());
dataMessage.setData(contentSend);
IFCMService ifcmService = Common.getFCMService();
ifcmService.sendNotification(dataMessage)
.enqueue(new Callback<MyResponse>() {
@Override
public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
if(response.code() == 200){
if(response.body().success == 1){
Toast.makeText(CartActivity.this,
getResources().getString(R.string.order_submitted), Toast.LENGTH_SHORT)
.show();
//Clear Carts From Room Database
Common.cartRepository.emptyCart();
//finish();
}
else {
Toast.makeText(CartActivity.this, "Send Notification Failed", Toast.LENGTH_SHORT).show();
}
}
}
@Override
public void onFailure(Call<MyResponse> call, Throwable t) {
Toast.makeText(CartActivity.this, ""+t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onFailure(Call<Token> call, Throwable t) {
Toast.makeText(CartActivity.this, t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
答案 0 :(得分：0)
我已通过降级firebase-messaging库（实现'com.google.firebase：firebase-messaging：17.3.4'）以及.setColor（ContextCompat.getColor（this，R.color）来解决此问题。 colorAccent））。但是，这已经为我解决了低于26的SDK版本的问题。任何人都知道为什么它仍然可以使用高于26的API获利？请帮助我
答案 1 :(得分：-1)
当应用程序在后台运行时，系统托盘中会收到通知，而在点击该通知后，该意图会发送到您的活动默认值，并带有有效内容的通知。
当您的应用程序在前面运行时，FirebaseMessagingService和您重写的逻辑会收到通知。
我认为，当应用程序在后台运行时，您应该添加第一点的逻辑
在此处查看更多信息