Question

应用清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.urvish.notificationdemo">
<uses-permission android:name="android.permission.INTERNET"/>
<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=".MyFirebaseInstanceIdService" android:enabled="true" android:exported="true">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
        </intent-filter>
    </service>
    <service android:name=".MyFirebaseMessagingService" android:enabled="true" android:exported="true">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT"/>
        </intent-filter>
    </service>
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_icon"
        android:resource="@drawable/ic_android" />
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_color"
        android:resource="@color/colorAccent" />
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_channel_id"
        android:value="my_channel_01" />
</application>

MainActivity.java

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

MyFirebaseInstanceIdService.java

public class MyFirebaseInstanceIdService extends 
FirebaseInstanceIdService {
@Override
public void onTokenRefresh() {
        super.onTokenRefresh();
        String token = FirebaseInstanceId.getInstance().getToken();
        Log.d("MyToken",token);
    }
 }

MyFirebaseMessagingService.java

public class MyFirebaseMessagingService extends 
FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        String title = remoteMessage.getNotification().getTitle();
        String body = remoteMessage.getNotification().getBody();
        Log.d("TAG", "onMessageReceived: " + title + ":" + body);
        System.out.println("msg" + title + ":" + body);
    }
}

到目前为止，我检查了我的应用程序是否已连接到Firebase。我最初获得令牌。但我仍然没有从firbase云收到任何通知。我已经阅读了文档并遵循了教程谢谢你。

Answer 1

我遇到了同样的问题，我首先检索了令牌，最后我成功收到了消息。希望会有所帮助。

public class MergeArrays {

    private static final List<String> FIRST = new ArrayList<>(Arrays.asList("A", "B", "C", "D", "E", "F", "G", "H", "I", "J"));
    private static final List<String> SECOND = new ArrayList<>(Arrays.asList("A", "C", "D"));
    private static final List<String> THIRD = new ArrayList<>(Arrays.asList("F", "E"));
    private static final List<String> FOURTH = new ArrayList<>(Arrays.asList("J", "H", "I"));

    public static List<String> merge(List<String> source, List<String>... lists) {
        List<String> result = new ArrayList<>();
        for (List<String> list : lists) {
            for (String value : list) {
                source.remove(value);
            }
        }

        for (List<String> list : lists) {
            String value = null;
            if (source.size() > 0) {
                value = source.get(0);
                source.remove(0);
            }
            result.addAll(merge(value, list));
        }
        return result;
    }

    public static List<String> merge(String value, List<String> list) {
        List<String> result = new ArrayList<>(list);
        if (value != null) {
            result.add(value);
        }
        return result;
    }

    public static void main(String[] args) {
        List<String> result = merge(FIRST, SECOND, THIRD, FOURTH);
        System.out.println(result);
    }
}

Firebase云消息传递无法正常工作

1 个答案: