Java Android后台通知无法打开应用程序

我从我的PHP调用FCM（不要担心PHP），它有click_action=>“OPEN_APP”，这意味着通知应该打开APP启动器活动，至少在APP处于后台或被杀死时是这样，但它没有。同时，若应用程序位于前台，通知有效负载工作正常，PendingEvent将打开它应该打开的内容

来自manifest.xml的代码：

<activity
        android:name=".SplashScreen"
        android:configChanges="keyboardHidden|orientation|screenSize">
        <intent-filter>
            <action android:name="OPEN_APP" />
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
//other activities
<service
        android:name=".services.MyFirebaseMessagingService"
        android:enabled="true"
        android:exported="false">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@drawable/via" />
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_color"
            android:resource="@color/colorPrimaryDark" />
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="@string/newsfeed_channel_id" />
    </service>
    <service
        android:name=".receivers.OnBootBroadcastReceiver"
        android:exported="true"
        android:enabled="true" >
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
        </intent-filter>
    </service>

我好奇地问，既然每个时间工厂都需要一个唯一的id，那么使用时间工厂作为通知id可以吗

int NOTIFICATION_ID = (int) System.currentTimeMillis();

来自OnBootBroadcastReceiver.class的代码

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

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

            //get key/value from notification
            String lectureDate = remoteMessage.getData().get("lecture_date");
            String web_url = remoteMessage.getData().get("web_url");

            if(lectureDate != null)sendLecturesNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), lectureDate);
            else Log.e(TAG, "Message.notification is empty!");
        }
    }

    @Override
    public void onNewToken(@NonNull String token) {
        Log.d(TAG, "Refreshed token: " + token);
    }

    private void sendLecturesNotification(String title,String messageBody, String date) {
        int NOTIFICATION_ID = (int) System.currentTimeMillis();
        Intent intent;
        intent = new Intent(this, Lectures_graph.class).putExtra("lecture_date", date)
                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, NOTIFICATION_ID, intent,
                0);

        String channelId = getString(R.string.lectures_channel_id);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.via)
                        .setContentTitle(title)
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setCategory(NotificationCompat.CATEGORY_REMINDER)
                        .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                        .setContentIntent(pendingIntent);

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

        if (notificationManager != null) {
            notificationManager.notify(NOTIFICATION_ID, notificationBuilder.build());
        }

        Log.d(TAG, "Lectures notification built with date:"+date);

    }
}

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

public class SplashScreen extends AppCompatActivity {

    //length of splashscreen
    private static int SPLASHSCREEN_LENGTH = 1250;
    private String TAG = "MenuScreen";

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

        findViewById(R.id.welcome_screen).startAnimation(AnimationUtils.loadAnimation(this, R.anim.appear));

        Handler handler = new Handler();

        //closes splashscreen after given time
        handler.postDelayed(new Runnable() {
            public void run() {
                //close welcome screen after given time
                Bundle extras = getIntent().getExtras();
                if(extras != null) {
//im handling notification extras here
                }
                finish();
            }
        }, SPLASHSCREEN_LENGTH);
    }
}

来自Splashscreen.class的代码

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

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

            //get key/value from notification
            String lectureDate = remoteMessage.getData().get("lecture_date");
            String web_url = remoteMessage.getData().get("web_url");

            if(lectureDate != null)sendLecturesNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), lectureDate);
            else Log.e(TAG, "Message.notification is empty!");
        }
    }

    @Override
    public void onNewToken(@NonNull String token) {
        Log.d(TAG, "Refreshed token: " + token);
    }

    private void sendLecturesNotification(String title,String messageBody, String date) {
        int NOTIFICATION_ID = (int) System.currentTimeMillis();
        Intent intent;
        intent = new Intent(this, Lectures_graph.class).putExtra("lecture_date", date)
                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, NOTIFICATION_ID, intent,
                0);

        String channelId = getString(R.string.lectures_channel_id);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.via)
                        .setContentTitle(title)
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setCategory(NotificationCompat.CATEGORY_REMINDER)
                        .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                        .setContentIntent(pendingIntent);

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

        if (notificationManager != null) {
            notificationManager.notify(NOTIFICATION_ID, notificationBuilder.build());
        }

        Log.d(TAG, "Lectures notification built with date:"+date);

    }
}

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

public class SplashScreen extends AppCompatActivity {

    //length of splashscreen
    private static int SPLASHSCREEN_LENGTH = 1250;
    private String TAG = "MenuScreen";

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

        findViewById(R.id.welcome_screen).startAnimation(AnimationUtils.loadAnimation(this, R.anim.appear));

        Handler handler = new Handler();

        //closes splashscreen after given time
        handler.postDelayed(new Runnable() {
            public void run() {
                //close welcome screen after given time
                Bundle extras = getIntent().getExtras();
                if(extras != null) {
//im handling notification extras here
                }
                finish();
            }
        }, SPLASHSCREEN_LENGTH);
    }
}

那么我可能在哪里犯了错误

我有正在工作的FCM接收器，正在工作的通知生成器。 我的启动程序活动的intent操作与PHP代码中提供的click_操作相同。 前景中一切正常。

---

我甚至在

BOOT\u COMPLETED

上启动了FCM receiving服务，以便随时接收消息。

我认为您在php请求中使用了通知负载。您应该使用数据负载，它将解决您的问题。