Firebase 云消息传递 - onMessageReceived 方法无法工作

12
我想在我的应用程序中实现一个简单的通知功能。我按照这个YouTube视频和这两个Firebase文档URL 12以及Android Studio中的Firebase工具助手(它显示我已连接到Firebase)的步骤进行操作。但是,出于某种原因,在我的旧应用程序上(其代码如下所示),遵循这些步骤和文档时,它不允许我接收通知。然而,如果我在全新的应用程序上执行相同的步骤,则完美地工作。我在相同的物理设备和环境中测试了两个应用程序,包括后台、活动和终止状态。每次我创建的新演示应用程序都可以正常工作,但我想要通知的旧应用程序无法正常工作。两者都没有获得设备ID进行测试。我甚至没有得到任何错误日志或任何TAG日志。我认为我的编译项目之一正在干扰,不确定确切的情况,但我可能需要查看那里。
我已经查看了以下所有的SO帖子: 123等等。
附注:下面我删除了我的软件包名称,我在FireBase上多次检查它们是否匹配,所以我知道那不是问题。然而,我的新演示应用程序的FireBase显示我的应用程序已连接,但我的旧应用程序的FireBase没有连接。此外,我之前设置过悬赏并仍然遇到同样的问题。
这是我的有问题的代码:
Notification.java(它是像文档要求的那样的服务)。
public class Notification extends FirebaseMessagingService {
public Notification() {
}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    showNotification(remoteMessage.getData().get("message"));

    Log.d("FMC", "Message Notification Body: " + remoteMessage.getNotification().getBody());
}

private void showNotification(String message) {
    Intent i=new Intent(this, SplashScreen.class);
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent pendingIntent=PendingIntent.getActivity(this,0,i,PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder builder=new NotificationCompat.Builder(this)
            .setAutoCancel(true)
            .setContentTitle("FCM TITLE").setContentText(message)
            .setSmallIcon(R.drawable.pt_icon)
            .setDefaults(android.app.Notification.DEFAULT_ALL)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notificationManager.notify(0,builder.build());
}
}

请注意,在上面的notification.java中,我甚至没有得到日志记录。

Project.gradle

buildscript {
repositories {
    jcenter()
    maven {
        url 'https://maven.google.com/'
        name 'Google'
    }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'
    classpath 'com.google.gms:google-services:3.2.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

allprojects {
repositories {
    jcenter()

    maven { url "https://jitpack.io" }
    maven { url 'https://maven.google.com' }
    google()
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

app.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 26

defaultConfig {

    minSdkVersion 16
    targetSdkVersion 26
    versionCode 16
    versionName "2.6"
}
dexOptions {
    jumboMode = true
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
//Code below is added to fix random error ("Fix the issues identified by lint")
lintOptions {
    abortOnError false
}
productFlavors {
}
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
//compile project(path: ':backend', configuration: 'android-endpoints')
//Removed the 0.2.+
compile 'com.daprlabs.aaron:cardstack:0.3.1-beta0'
//noinspection GradleCompatible
compile 'com.android.support:appcompat-v7:25.4.0'
compile "com.android.support:appcompat-v7:19.0.+"
compile 'com.android.support:design:23.4.0'
compile 'com.android.support:recyclerview-v7:23.4.0'
compile 'com.android.support:cardview-v7:23.4.0'

compile 'com.github.danylovolokh:video-player-manager:0.2.0'
compile 'com.github.danylovolokh:list-visibility-utils:0.2.0'



implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.google.firebase:firebase-messaging:11.8.0'
compile 'com.google.firebase:firebase-core:11.8.0'


compile 'com.orhanobut:dialogplus:1.11@aar'


compile 'com.nineoldandroids:library:2.4.0'
compile files('libs/sinch-android-rtc-3.9.14.jar')
compile 'com.amazonaws:aws-android-sdk-s3:2.4.4'
compile 'com.github.chrisbanes:PhotoView:1.2.6'
compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.5.0'
compile 'com.github.amlcurran.showcaseview:library:5.4.3'
compile 'com.github.d-max:spots-dialog:0.7@aar'
compile 'com.victor:lib:1.0.4'
compile 'com.github.bumptech.glide:glide:3.5.2'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.android.support:recyclerview-v7:23.0.0'
compile 'me.grantland:autofittextview:0.2.0'
compile 'com.wang.avi:library:1.0.5'
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.braintreepayments.api:drop-in:2.3.8'
compile 'com.braintreepayments.api:braintree:2.3.9'
compile 'com.loopj.android:android-async-http:1.4.9'
compile 'com.getbase:floatingactionbutton:1.10.1'
compile 'com.mxn.soul:flowingdrawer-core:1.2.2'
compile 'com.github.rengwuxian:MaterialEditText:2.1.4'
compile 'com.github.PhilJay:MPAndroidChart:v3.0.1'
compile 'net.gotev:uploadservice:3.2.5'
compile 'in.srain.cube:ultra-ptr:1.0.11'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha9'
testCompile 'junit:junit:4.12'
//implementation 'com.android.support:appcompat-v4:23.+'
}


apply plugin: 'com.google.gms.google-services'

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">

<uses-feature
    android:name="android.hardware.microphone"
    android:required="false" />

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<!--
so the app can be found on tablets Google Play

<uses-permission android:name="android.permission.CALL_PHONE" />
-->
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<!-- <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/> -->
<!-- <uses-permission android:name="android.permission.WAKE_LOCK" /> -->
<!-- <uses-permission android:name="android.permission.READ_PHONE_STATE" /> -->

<grant-uri-permission
    android:path="string"
    android:pathPattern="string"
    android:pathPrefix="string" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/_icon"
    android:label=""
    android:supportsRtl="true"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar"
    tools:node="replace">
    <activity android:name=".SplashScreen">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <service android:name=".Notification">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

    <!-- &lt;!&ndash; -->
    <!-- Set custom default icon. This is used when no icon is set for incoming notification messages. -->
    <!-- See README() for more. -->
    <!-- &ndash;&gt; -->
    <!-- <meta-data -->
    <!-- android:name="com.google.firebase.messaging.default_notification_icon" -->
    <!-- android:resource="@drawable/pt_icon" /> -->
    <!-- &lt;!&ndash; -->
    <!-- Set color used with incoming notification messages. This is used when no color is set for the incoming -->
    <!-- notification message. See README() for more. -->
    <!-- &ndash;&gt; -->
    <!-- <meta-data -->
    <!-- android:name="com.google.firebase.messaging.default_notification_color" -->
    <!-- android:resource="@color/colorAccent" /> -->

    <activity android:name=".SignInForm" />
    <activity android:name=".SignUpPage" />
    <activity android:name=".SellerFillOutForm" />
    <activity android:name=".BuyerFillOutForm" />
    <activity
        android:name=".BuyerHomePage"
        android:label="@string/title_activity_buyer_home_page" />

    <action android:name="android.intent.action.VIEW" />

    <category android:name="android.intent.category.BROWSABLE" />

    <data android:scheme="http" />

    <activity android:name=".VideoPlayerActivity" />
    <activity android:name=".BackgroundTask" />

    <service
        android:name="com.amazonaws.mobileconnectors.s3.transferutility.TransferService"
        android:enabled="true" />

    <activity android:name=".EnterCreditCard" />
    <activity android:name=".PickMeeting" />
    <activity android:name=".HowBillingWorks" />
    <activity android:name=".ReBillingPlan" />
    <activity android:name=".PayBill" />
    <activity
        android:name=".Buyer_Home_Page"
        android:configChanges="locale|orientation" />
    <activity android:name=".Seller_Home_Page" />
    <activity android:name=".ProductList" />
    <activity android:name=".EditProduct" />
    <activity android:name=".EditSellerAccount" />
    <activity android:name=".EditBuyerAccount" />
    <activity android:name=".Video_Calling.incomingVideoCall" />
    <activity android:name=".Video_Calling.CallScreenActivity" />
    <activity android:name=".SellerAnalytics" />
    <activity android:name=".Swipe_Layout.SwipeLayout" />
    <activity android:name=".Swipe_Layout.PopUpActivity" />
</application>

</manifest>

以下是可正常工作的代码(我制作的应用程序,仅用于测试我的步骤并且百分之百有效):

Notifaction.java

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

import static android.content.ContentValues.TAG;

public class Notifaction extends FirebaseMessagingService {
public Notifaction() {
}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    showNotification(remoteMessage.getData().get("message"));
}

private void showNotification(String message) {
    Intent i=new Intent(this,MainActivity.class);
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent pendingIntent=PendingIntent.getActivity(this,0,i,PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder builder=new NotificationCompat.Builder(this)
            .setAutoCancel(true)
            .setContentTitle("FCM TITLE").setContentText(message)
            .setSmallIcon(R.drawable.ic_launcher_background)
            .setDefaults(Notification.DEFAULT_ALL)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notificationManager.notify(0,builder.build());
}
}

AndroidManiest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="">
<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">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <service
        android:name=".Notifaction">
        <intent-filter>
            <action 
android:name="com.google.firebase.MESSAGING_EVENT"/>
        </intent-filter>
    </service>

</application>

</manifest>

app.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 26
defaultConfig {
    applicationId ""
    minSdkVersion 14
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.google.firebase:firebase-messaging:11.8.0'
compile 'com.google.firebase:firebase-core:11.8.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}


apply plugin: 'com.google.gms.google-services'

Project.grdle

    // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {

repositories {
    google()
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'
    classpath 'com.google.gms:google-services:3.2.0'

    // NOTE: Do not place your application dependencies here; they 
belong
    // in the individual module build.gradle files
}
}

allprojects {
repositories {
    google()
    jcenter()
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

此外,我已将 .json 文件添加到两个项目中。以下是屏幕截图: link

当您运行应用程序时,是否收到日志消息“Firebase 初始化成功”? - Pavel Poley
我根本没有收到任何通知,甚至没有“Firebase 初始化成功”的日志 :/ - Lazar Kukolj
你能展示一下你放置JSON文件的文件夹结构的截图吗? - Pavel Poley
请检查上面的编辑 - Lazar Kukolj
我没有收到任何东西。 - Lazar Kukolj
显示剩余6条评论
12个回答

5
如果您正在接收设备令牌并且拥有服务器API密钥,则可以使用 pushtry 检查您的代码是否正常工作。 如果您在代码中犯了任何错误,它将显示错误,例如 无效注册404错误 等。 对于FCM的实现,您可以参考这个教程 - FCM教程 我注意到您的 build.gradle 文件中没有任何 applicationId“包名”。 我不确定,但这是包名,在我们在Firebase控制台上创建项目时使用(带有包名的项目名称)。

我删除了包名,因为它涉及私人信息,但是我使用 Android Studio 中的 Firebase 助手工具和 Firebase 网站将其连接起来。所有的都显示已连接。此外,我已添加了 .json 文件。 - Lazar Kukolj
这篇回答是自动选择的 +25 分。但它没有解决我的问题。 - Lazar Kukolj
@aj0822ArpitJoshi,我还有一个问题想问您。我的项目在Firebase控制台上测试时,在debug模式下运行良好,但是在设置了proguard规则的发布版本中却无法正常工作。我使用pushtry进行测试,它可以正常工作。您认为可能出了什么问题? - Morteza Rastgoo

5
您的通知很可能由于Android Oreo新的通知模型而未显示,该模型要求指定频道定义以构建和显示通知。另外在您的app.gradle中,您针对的是Android Oreo的android版本26,因此您必须无论如何实施下面的代码。
采用它很容易,您只需要: 1. 在YourApplicationClass.onCreate()中定义通知频道
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

            NotificationChannel chan1 = new NotificationChannel(
                YOUR_DESIRED_CHANNEL_ID_STRING,
                YOUR_DESIRED_CHANNEL_LABEL_STRING, 
                NotificationManager.IMPORTANCE_DEFAULT);

            chan1.setDescription(YOUR_DESIRED_CHANNEL_DESC_STRING);//OPTIONAL
            chan1.setLightColor(Color.BLUE);//OPTIONAL     
            chan1.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);//OPTIONAL
            chan1.setShowBadge(true);//OPTIONAL

            getManager().createNotificationChannel(chan1);
        }

2. 用这个构造函数替换你的通知构建器

    NotificationCompat.Builder builder=
new NotificationCompat.Builder(this, YOUR_DESIRED_CHANNEL_ID_STRING);

很高兴知道您可以定义多个具有不同属性的频道,以针对Android Oreo及更高版本。

如果是这样,我的新应用程序不应该工作,因为它也针对Android Oreo,并且它不遵循新的通知模型吗? - Lazar Kukolj
你可能面临着不同类型的问题或错误,但我可以百分之百确定,如果没有指定通道,你的应用程序将无法在运行Android O(26)的设备上显示通知... 你是否在同一设备/Android版本上测试两个应用程序?同时,这两个应用程序是否具有相同的代码实现?(也许我可以提供更多帮助) - Bassel Mourjan
我在同一台设备上测试了这两个应用程序,这两个应用程序都有其各自的代码。 - Lazar Kukolj
2个看似愚蠢的问题却有助于调试:
  • 您是否在两个项目中都放置了相同的JSON文件?
  • 您是如何将通知发送到设备的?Firebase控制台?
经过第二次查看,您的代码看起来很好。
- Bassel Mourjan
我有每个项目的 .json 文件,并通过 Firebase 控制台发送通知。这正是我卡住的原因:/ - Lazar Kukolj
在这种情况下,你只剩下以下两个选择:
  1. 确保不要为两个应用使用相同的推送 ID,因为它是按应用程序而非设备唯一的。
  2. 确保你正在使用正确和最新的推送 ID,因为推送 ID 会不时更改。因此,我建议你实现 FirebaseInstanceIdService(https://firebase.google.com/docs/reference/android/com/google/firebase/iid/FirebaseInstanceIdService),但我没有看到它在你的代码中实现。
- Bassel Mourjan

4
如果您查看此文档,您会发现您没有扩展FirebaseInstanceIdService以管理令牌创建/旋转的服务。这里是一个示例代码。此类接收用于向特定设备发送推送通知所需的令牌。
<service
    android:name=".MyFirebaseInstanceIDService">
    <intent-filter>
        <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
    </intent-filter>
</service>

编辑:

好的,这个错误现在困扰着我。我查看了您的依赖树,发现您重复了一些依赖项。例如,您有三个版本的:

compile 'com.android.support:appcompat-v7:25.4.0'

也许你应该将其清除到最新版本,或与工作版本匹配。此外,你正在使用新的gradle插件,但在大多数情况下,你还没有更新依赖项以使用implementation而不是compile,也许可以尝试一下?这里是why应该这样做的原因。
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
//compile project(path: ':backend', configuration: 'android-endpoints')
//Removed the 0.2.+
compile 'com.daprlabs.aaron:cardstack:0.3.1-beta0'
//noinspection GradleCompatible
compile 'com.android.support:appcompat-v7:25.4.0'
compile "com.android.support:appcompat-v7:19.0.+"
compile 'com.android.support:design:23.4.0'
compile 'com.android.support:recyclerview-v7:23.4.0'
compile 'com.android.support:cardview-v7:23.4.0'

compile 'com.github.danylovolokh:video-player-manager:0.2.0'
compile 'com.github.danylovolokh:list-visibility-utils:0.2.0'



implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.google.firebase:firebase-messaging:11.8.0'
compile 'com.google.firebase:firebase-core:11.8.0'


compile 'com.orhanobut:dialogplus:1.11@aar'


compile 'com.nineoldandroids:library:2.4.0'
compile files('libs/sinch-android-rtc-3.9.14.jar')
compile 'com.amazonaws:aws-android-sdk-s3:2.4.4'
compile 'com.github.chrisbanes:PhotoView:1.2.6'
compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.5.0'
compile 'com.github.amlcurran.showcaseview:library:5.4.3'
compile 'com.github.d-max:spots-dialog:0.7@aar'
compile 'com.victor:lib:1.0.4'
compile 'com.github.bumptech.glide:glide:3.5.2'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.android.support:recyclerview-v7:23.0.0'
compile 'me.grantland:autofittextview:0.2.0'
compile 'com.wang.avi:library:1.0.5'
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.braintreepayments.api:drop-in:2.3.8'
compile 'com.braintreepayments.api:braintree:2.3.9'
compile 'com.loopj.android:android-async-http:1.4.9'
compile 'com.getbase:floatingactionbutton:1.10.1'
compile 'com.mxn.soul:flowingdrawer-core:1.2.2'
compile 'com.github.rengwuxian:MaterialEditText:2.1.4'
compile 'com.github.PhilJay:MPAndroidChart:v3.0.1'
compile 'net.gotev:uploadservice:3.2.5'
compile 'in.srain.cube:ultra-ptr:1.0.11'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha9'
testCompile 'junit:junit:4.12'
//implementation 'com.android.support:appcompat-v4:23.+'
}

同时,更新你的依赖关系并使用implementation代替compile:
implementation 'com.google.firebase:firebase-messaging:15.0.2'
implementation 'com.google.firebase:firebase-core:15.0.2'

我在我的快速应用程序中没有它,但它可以正常工作。 - Lazar Kukolj
在视频中,你说你使用了大约11:03的那个人教如何创建FirebaseInstanceIdService的部分,你是用这个视频来制作快速应用的吗? - Levi Moreira
不需要使用ID服务来获取订阅主题通知的令牌,我只想向所有人发送通知。在此之后,我会进一步研究主题等内容。 - Lazar Kukolj
好的,如果你不是通过令牌将通知发送到设备,那么你是如何发送它的? - Levi Moreira
如果您想发送到单个设备或使用令牌订阅手机通知主题,那么就需要这样做。我想像我制作的快速应用程序一样向所有人发送通知。您想看工作代码吗? - Lazar Kukolj
显示剩余3条评论

3

// 这可以在手机重新启动时帮助启动FCM服务。

Add receiver in Manifest.xml

<uses-permission android:name="android.permission.WAKE_LOCK" />
<receiver android:name=".OnBootBroadcastReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
</receiver>

OnBootBroadcastReceiver.class

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class OnBootBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent i = new Intent("com.examle.FirebaseMessagingReceiveService");
        i.setClass(context, FirebaseMessagingReceiveService.class);
        context.startService(i);
    }
}

  1. 你是否检查过通知的类型(消息或数据),因为在你的onMessageReceived中,你只处理了数据消息。尝试在此消息中打印日志。
  2. 如果你之前在项目中实现了GCM和GCM依赖项,可能会与FCM产生冲突。
- jessica
每次测试时,我都会检查我的日志是否有“FCM”的记录,但从未出现过。此外,我相信我以前使用过GCM,请帮我指出如何摆脱它? - Lazar Kukolj
当您向设备发送通知时,请尝试获取日志,这将有所帮助。并检查FCM令牌是否生成,如果令牌有效,则只能接收通知。 - jessica
每次我测试任何东西时,我都会检查我的日志是否有“FMC”,而且我不想仅将通知发送到我的设备,我想向所有人发送通知。 - Lazar Kukolj
首先检查你的设备 FCM 令牌,你可以使用高级 REST 客户端 Chrome 扩展程序来发送通知。 - jessica
请从以下链接检查FCM与实时Firebase数据库一起使用的相关内容:https://stackoverflow.com/questions/43816663/fcm-messaging-with-realtime-firebase-database - jessica

3
希望你知道通知的类型,如果要发送通知,你需要使用自定义服务器或类似Postman的工具。如需更多信息,请参考以下问题的答案:Firebase背景应用程序中如何处理通知。无论如何,在FirebaseMessagingService中,你必须调用handleIntent(Intent intent)方法来调用onMessageReceived()方法。这是我的完整工作代码:notification-when-app-in-background-in-firebase。
build.gradle:
apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '26.0.3'
    defaultConfig {
        applicationId "com.abc.xyz"
        minSdkVersion 17
        targetSdkVersion 26
        multiDexEnabled true
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dexOptions {
        javaMaxHeapSize "4g"
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:support-v4:26.1.0'
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support:design:26.1.0'
    implementation 'com.android.support:recyclerview-v7:26.1.0'
    implementation 'com.android.support:cardview-v7:26.1.0'
    //firebase analytics and ads
    implementation 'com.google.firebase:firebase-ads:11.4.2'
    implementation 'com.google.firebase:firebase-core:11.4.2'
    implementation 'com.google.firebase:firebase-messaging:11.4.2'
    implementation 'com.firebase:firebase-jobdispatcher:0.8.5'
}

apply plugin: 'com.google.gms.google-services'

AndroidManifest.xml :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.abc.xyz">

    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:name=".MyApplication"
        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">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>


        <!-- [START fcm_default_icon] -->

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@drawable/ic_stat_ic_notification" />

        <meta-data
            android:name="com.google.firebase.messaging.default_notification_color"
            android:resource="@color/colorAccent" />
        <!-- [END fcm_default_icon] -->
        <!-- [START fcm_default_channel] -->
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="@string/default_notification_channel_id" />
        <!-- [END fcm_default_channel] -->

        <service
            android:name=".services.MyFirebaseMessagingService"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
        <service android:name=".services.MyFirebaseInstanceIDService">
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
            </intent-filter>
        </service>
        <service
            android:name=".services.MyJobService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.firebase.jobdispatcher.ACTION_EXECUTE" />
            </intent-filter>
        </service>

    </application>

</manifest>

我的FirebaseMessagingService.java:

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private static final String TAG = "MyFirebaseMsgService";

    @Override
    public void handleIntent(Intent intent) {

        Log.e(TAG, "handleIntent");
        try
        {
            if (intent.getExtras() != null)
            {
                RemoteMessage.Builder builder = new RemoteMessage.Builder("MyFirebaseMessagingService");

                for (String key : intent.getExtras().keySet())
                {
                    builder.addData(key, intent.getExtras().get(key).toString());
                }

                onMessageReceived(builder.build());
            }
            else
            {
                super.handleIntent(intent);
            }
        }
        catch (Exception e)
        {
            super.handleIntent(intent);
        }
    }

    /**
     * Called when message is received.
     *
     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // [START_EXCLUDE]
        // 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
        // [END_EXCLUDE]

        // TODO(developer): Handle FCM messages here.
        // Not getting messages here? See why this may be:
        Log.e(TAG, "Notification received Successfully");
        Log.e(TAG, "From: " + remoteMessage.getFrom());

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.e(TAG, "Message data payload: " + remoteMessage.getData());

            if (/* Check if data needs to be processed by long running job */ true) {
                // For long-running tasks (10 seconds or more) use Firebase Job Dispatcher.
                scheduleJob();
            } else {
                // Handle message within 10 seconds
                handleNow();
            }

        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.e(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        }

        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }
    // [END receive_message]

    /**
     * Schedule a job using FirebaseJobDispatcher.
     */
    private void scheduleJob() {
        // [START dispatch_job]
        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(this));
        Job myJob = dispatcher.newJobBuilder()
                .setService(MyJobService.class)
                .setTag("my-job-tag")
                .build();
        dispatcher.schedule(myJob);
        // [END dispatch_job]
    }

    /**
     * Handle time allotted to BroadcastReceivers.
     */
    private void handleNow() {
        Log.e(TAG, "Short lived task is done.");
    }

    /**
     * Create and show a simple notification containing the received FCM message.
     *
     * @param messageBody FCM message body received.
     */
    private void sendNotification(String messageBody) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        String channelId = getString(R.string.default_notification_channel_id);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.ic_stat_ic_notification)
                        .setContentTitle("FCM Message")
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }
}

MyFirebaseInstanceIDService.java:

public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
    private static final String TAG = "MyFirebaseIIDService";

    /**
     * Called if InstanceID token is updated. This may occur if the security of
     * the previous token had been compromised. Note that this is called when the InstanceID token
     * is initially generated so this is where you would retrieve the token.
     */
    // [START refresh_token]
    @Override
    public void onTokenRefresh() {
        // Get updated InstanceID token.
        Log.e(TAG, "onTokenRefresh");
        String refreshedToken = FirebaseInstanceId.getInstance().getToken();
        Log.e(TAG, "Refreshed token: " + refreshedToken);

        // If you want to send messages to this application instance or
        // manage this apps subscriptions on the server side, send the
        // Instance ID token to your app server.
        sendRegistrationToServer(refreshedToken);
    }
    // [END refresh_token]

    /**
     * Persist token to third-party servers.
     *
     * Modify this method to associate the user's FCM InstanceID token with any server-side account
     * maintained by your application.
     *
     * @param token The new token.
     */
    private void sendRegistrationToServer(String token) {
        // TODO: Implement this method to send token to your app server.
    }
}

MyJobService.java

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public class MyJobService extends JobService {

    private static final String TAG = "MyJobService";

    @Override
    public boolean onStartJob(JobParameters job) {
        // Do some work here
        Log.e(TAG, "Inside MyJobService");
        return false; // Answers the question: "Is there still work going on?"
    }

    @Override
    public boolean onStopJob(JobParameters job) {
        Log.e(TAG, "Inside MyJobService");
        return false; // Answers the question: "Should this job be retried?"
    }
}

MyApplication.java:

public class MyApplication extends MultiDexApplication {

    @Override
    public void onCreate() {
        super.onCreate();

        // active JobSchedulerReceiver
        Intent intent = new Intent();
        intent.setAction(getPackageName() + ".receiver.JobSchedulerReceiver");
        sendBroadcast(intent);
    }

    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }
}

MainActivity.java:

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Log.e(TAG, "Inside MainActivity");

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            // Create channel to show notifications.
            String channelId = getString(R.string.default_notification_channel_id);
            String channelName = getString(R.string.default_notification_channel_name);
            NotificationManager notificationManager =
                    getSystemService(NotificationManager.class);
            assert notificationManager != null;
            notificationManager.createNotificationChannel(new NotificationChannel(channelId,
                    channelName, NotificationManager.IMPORTANCE_LOW));
        }

        // If a notification message is tapped, any data accompanying the notification
        // message is available in the intent extras. In this sample the launcher
        // intent is fired when the notification is tapped, so any accompanying data would
        // be handled here. If you want a different intent fired, set the click_action
        // field of the notification message to the desired intent. The launcher intent
        // is used when no click_action is specified.
        //
        // Handle possible data accompanying notification message.
        // [START handle_data_extras]
        if (getIntent().getExtras() != null) {
            for (String key : getIntent().getExtras().keySet()) {
                Object value = getIntent().getExtras().get(key);
                Log.e(TAG, "Key: " + key + " Value: " + value);
            }
        }
        // [END handle_data_extras]

        Button subscribeButton = findViewById(R.id.subscribeButton);
        subscribeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // [START subscribe_topics]
                FirebaseMessaging.getInstance().subscribeToTopic("news");
                // [END subscribe_topics]

                // Log and toast
                String msg = getString(R.string.msg_subscribed);
                Log.e(TAG, msg);
                Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
            }
        });

        Button logTokenButton = findViewById(R.id.logTokenButton);
        logTokenButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Get token
                String token = FirebaseInstanceId.getInstance().getToken();

                // Log and toast
                String msg = getString(R.string.msg_token_fmt, token);
                Log.e(TAG, msg);
                Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
            }
        });

    }
}

3

我曾经遇到过同样的问题,通过在AndroidManifest.xml中添加完整路径android:name服务,问题得到了解决。

<service android:name="com.testapp.Notifaction">
     <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT"/>
    </intent-filter>
</service>

试一试,如果有任何问题,请告诉我。


2
自从您没有收到Firebase的任何日志事件,请按照以下步骤检查:
  • 进入Firebase项目控制台,进入项目设置,检查包名称是否正确。
  • 重新下载JSON文件并将其复制到app/模块中(从Android切换到项目),确保文件名为google-services.json
  • 运行您的项目,在logcat中搜索关键字Firebase,如果成功,则会看到以下消息:

I/FirebaseInitProvider: FirebaseApp初始化成功


2

让我们一步一步来,我会逐步检查您的代码与我的实际项目进行比较,该项目正在生产中使用Firebase Messaging服务的最新版本:

  • 您的gradle依赖项看起来不错,但您只需要 implementation "com.google.firebase:firebase-messaging:15.0.2"

  • 您能否尝试将类重命名为其他名称?例如 MessagingController ,因为 Notification 名称可能会与Android Notification类相互影响。同时,请记住它应该有一个空构造函数(但我在您的代码中看到您已经实现了它)

例如,将其放在<application>标签内的清单文件中:

   <!--Service to control messaging requests-->
        <service
            android:name=".messaging.controller.MessagingController"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
    </application>

此外,不要忘记您需要一个 FirebaseInstanceService 的实例,就像官方文档所说的那样:

扩展 FirebaseInstanceIdService 的服务,用于处理注册令牌的创建、旋转和更新。这是发送到特定设备或创建设备组所必需的。

<!--Firebase instance service to renew messaging tokens-->
        <service
            android:name=".messaging.service.FirebaseInstanceService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
            </intent-filter>
        </service>
  • 您是从Firebase控制台发送通知吗?还是使用Firebase Cloud函数?在这两种情况下,您是否引入了正确的令牌?如果您放置了一个超时的令牌,Firebase控制台将显示错误,您应该像这样添加通知:

enter image description here

  • 好的,在这一点上,使用您的代码,至少应该在日志中接收到通知

  • 如果您想要检查下一个项目,这是一个构建通知系统的应用程序框架。也许它也会对您有所帮助:https://github.com/FrangSierra/PushNotificationSkeleton

  • 最后,如果您想要检查一些云功能代码,以了解如何从服务器发送通知,我建议您查看此存储库


1
让应用程序监听Firebase数据库中的某个值,并将其更改为您想要的消息。我在我的应用程序中这样做,它像魅力一样工作。

1

你是否已在 FCM 控制台上注册了你的应用程序?并在你的应用程序中添加了 .json 文件?


我创建了Firebase项目,添加了.json文件,然后通过助手工具连接了我的项目。 - Lazar Kukolj

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