Android 我的设备未收到Firebase云消息通知

我在项目中使用Firebase Auth。今天我决定将FCM集成到我的项目中。但我无法从Firebase控制台收到任何通知。我还尝试重新下载.json文件，但没有成功。你们知道我的问题吗

AndroidManifest.xml

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

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

<!--
     The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
     Google Maps Android API v2, but you must specify either coarse or fine
     location permissions for the 'MyLocation' functionality. 
-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- Cihazdan Google Servislerine erişmek için izin -->
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!-- İndirilenlerin tutulması için izinler -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- OpenGL ES 2.0 Google Maps Android API v2 için gerekiyor -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"></uses-permission>
<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/oto_takip"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".MyIntro"
        android:theme="@style/FullscreenTheme" />
    <activity
        android:name=".MainActivity"
        android:theme="@style/AppTheme.NoActionBar" />
    <activity
        android:name=".AracEkle"
        android:theme="@style/AppTheme.NoActionBar" />
    <activity
        android:name=".InternetCon"
        android:theme="@style/FullscreenTheme" />
    <activity
        android:name=".IpuclariSayfasi"
        android:theme="@style/AppTheme.NoActionBar" />
    <activity
        android:name=".TrafficActivity"
        android:theme="@style/AppTheme.NoActionBar" />
    <activity
        android:name=".EngineActivity"
        android:theme="@style/AppTheme.NoActionBar" />
    <activity
        android:name=".AidActivity"
        android:theme="@style/AppTheme.NoActionBar" />

    <!--
         The API key for Google Maps-based APIs is defined as a string resource.
         (See the file "res/values/google_maps_api.xml").
         Note that the API key is linked to the encryption key used to sign the APK.
         You need a different API key for each encryption key, including the release key that is used to
         sign the APK for publishing.
         You can define the keys for the debug and release targets in src/debug/ and src/release/. 
    -->
    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="@string/google_maps_key" />
    <meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />

    <activity
        android:name=".MapsActivity"
        android:label="@string/title_activity_maps" />

    <activity
        android:name=".AyarlarActivity"
        android:theme="@style/AppTheme.NoActionBar">
    </activity>

    <activity android:name=".Hesabim"
        android:theme="@style/AppTheme.NoActionBar">
    </activity>

    <activity android:name=".Giris"
        android:theme="@style/AppTheme.NoActionBar"
        >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" /> <!-- Check this one -->
        </intent-filter>
    </activity>

    <activity android:name=".KayitOl"
        android:theme="@style/AppTheme.NoActionBar">
    </activity>

    <service
        android:name=".FirebaseMessageService"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT"/>
        </intent-filter>
    </service>

    <service
        android:name=".FirebaseIDService"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
        </intent-filter>
    </service>

</application>

FirebaseIDService.java

public void onMessageReceived(RemoteMessage remoteMessage){
    sendNotification(remoteMessage.getNotification().getBody());
}

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, intent, PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.mipmap.oto_takip)
            .setContentText(messageBody)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, notificationBuilder.build());
}

 public class FirebaseIDService extends FirebaseInstanceIdService
 {
private static final String TAG ="FirebaseIDService";
@Override
public void onTokenRefresh() {
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    Log.d(TAG, "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);
}

private void sendRegistrationToServer(String refreshedToken)
{
}
   }

 public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener{

private Fragment fragment;
private FragmentManager fragmentManager;
public TextView tarih;
final String PREFS_NAME = "MyPrefsFile";
final String SHAREDPREF_DATE = "SharedPrefDate";
private FirebaseAuth firebaseAuth;
private TextView textViewUserEmail;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    firebaseAuth = FirebaseAuth.getInstance();
    if(firebaseAuth.getCurrentUser()==null)
    {
        startActivity(new Intent(this,Giris.class));
        finish();
    }
    setContentView(R.layout.activity_main);

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Navigation itemlerinin click olaylarını burada yapıyoruz.
    int id = item.getItemId();
    if (id == R.id.nav_kullanici)
    {
        startActivity(new Intent(MainActivity.this,Hesabim.class));

    }
    else if (id == R.id.nav_hatirlatma)
    {
        startActivity(new Intent(MainActivity.this,AyarlarActivity.class));
    }
    else if (id == R.id.nav_ipucu)
    {
        startActivity(new Intent(MainActivity.this,IpuclariSayfasi.class));
    }


    else if (id == R.id.nav_oyla)
    {


    }
    else if (id == R.id.nav_cikis)
    {

        firebaseAuth.signOut();
        finish();
        startActivity(new Intent(MainActivity.this, Giris.class));

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;

}
}

我认为这个问题不取决于mainActivity.java，但我将向您展示它以防万一

MainActivity.java

public void onMessageReceived(RemoteMessage remoteMessage){
    sendNotification(remoteMessage.getNotification().getBody());
}

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, intent, PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.mipmap.oto_takip)
            .setContentText(messageBody)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0, notificationBuilder.build());
}

 public class FirebaseIDService extends FirebaseInstanceIdService
 {
private static final String TAG ="FirebaseIDService";
@Override
public void onTokenRefresh() {
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    Log.d(TAG, "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);
}

private void sendRegistrationToServer(String refreshedToken)
{
}
   }

 public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener{

private Fragment fragment;
private FragmentManager fragmentManager;
public TextView tarih;
final String PREFS_NAME = "MyPrefsFile";
final String SHAREDPREF_DATE = "SharedPrefDate";
private FirebaseAuth firebaseAuth;
private TextView textViewUserEmail;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    firebaseAuth = FirebaseAuth.getInstance();
    if(firebaseAuth.getCurrentUser()==null)
    {
        startActivity(new Intent(this,Giris.class));
        finish();
    }
    setContentView(R.layout.activity_main);

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Navigation itemlerinin click olaylarını burada yapıyoruz.
    int id = item.getItemId();
    if (id == R.id.nav_kullanici)
    {
        startActivity(new Intent(MainActivity.this,Hesabim.class));

    }
    else if (id == R.id.nav_hatirlatma)
    {
        startActivity(new Intent(MainActivity.this,AyarlarActivity.class));
    }
    else if (id == R.id.nav_ipucu)
    {
        startActivity(new Intent(MainActivity.this,IpuclariSayfasi.class));
    }


    else if (id == R.id.nav_oyla)
    {


    }
    else if (id == R.id.nav_cikis)
    {

        firebaseAuth.signOut();
        finish();
        startActivity(new Intent(MainActivity.this, Giris.class));

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;

}
}

---

您可能需要检查是否已将应用程序正确配置为使用Firebase。在项目应用程序目录的

build.gradle

文件中添加google服务插件

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

有关更多信息，请参见此

除此之外。确认您的

app/build.gradle

文件中是否存在此依赖项

compile 'com.google.firebase:firebase-messaging:10.2.0'

---

这方面建议的解决方案也可能有所帮助。

您是否尝试直接发送到FCM令牌？否，我将如何执行？但我不是在发信息。我想接收消息。顺便说一句，我正在尝试在Android emulator上接收消息。这样可以吗？使用FirebaseInstanceId.getInstance（）.getToken（）从应用程序中获取FCM令牌（在日志中打印以便查看）。然后使用Firebase通知控制台向该特定令牌发送消息。这样你就能更好地理解正在发生的事情。