使用 Firebase 和 Android 的通知

Question

我正在尝试制作一个安卓应用程序，在那里我使用 firebase 接收通知。我关注了互联网上可用的资源。

我只想从 firebase 发送通知，我收到的消息我想在主活动的 TextView 中显示它。

目前我正在模拟器中进行测试。很少有我无法解决的问题。

我可以从火力基地发送通知，但是：

1. 当应用程序在前台运行时，我在 android 通知面板中没有收到通知，主活动中也没有任何反应。也就是说，文本视图中的文本不会更改。
2. 当应用程序在后台运行时，我确实在 android 通知面板中收到通知，其中包含从 firebase 发送的消息，单击通知主活动将打开，但 TextView 中的文本不会更改。

火力基础消息服务

public class VAFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "VAFirebaseMessagingS";
public VAFirebaseMessagingService() {}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
Log.d(TAG, "From: " + remoteMessage.getFrom());
if(remoteMessage.getData().size() > 0) {
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
sendNotification(remoteMessage.getData().get("text"));
}
if(remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
sendNotification(remoteMessage.getNotification().getBody());
}
}
private void sendNotification(String messageBody) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra(Intent.EXTRA_TEXT, messageBody);
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);
notificationBuilder.setSmallIcon(R.drawable.ic_stat_name);
notificationBuilder.setContentTitle("PFIVA");
notificationBuilder.setContentText(messageBody);
notificationBuilder.setAutoCancel(true);
notificationBuilder.setSound(defaultSoundUri);
notificationBuilder.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
}
}

主要活动

public class MainActivity extends AppCompatActivity {
private TextView userFeedbackQuery;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
userFeedbackQuery = (TextView) findViewById(R.id.pfiva_user_feedback_query);
final Intent intent = getIntent();
if(intent.hasExtra(Intent.EXTRA_TEXT)) {
String userFeedbackQueryText = intent.getStringExtra(Intent.EXTRA_TEXT);
userFeedbackQuery.setText(userFeedbackQueryText);
}
}
}

安卓清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.pfiva.mobile.voiceassistant">
<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=".activities.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".messaging.FirebaseInstanceService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
</intent-filter>
</service>
<service
android:name=".messaging.VAFirebaseMessagingService"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
</application>
</manifest>

请有人指导这里出了什么问题吗？如何解决以上两个问题。

谢谢

---

在建议之后，我在消息服务中进行了以下更改，基本上添加了通知通道。

private void sendNotification(String messageBody) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra(Intent.EXTRA_TEXT, messageBody);
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, CHANNEL_ID);
notificationBuilder.setSmallIcon(R.drawable.ic_stat_name);
notificationBuilder.setContentTitle("PFIVA");
notificationBuilder.setContentText(messageBody);
notificationBuilder.setPriority(NotificationCompat.PRIORITY_HIGH);
notificationBuilder.setAutoCancel(true);
notificationBuilder.setSound(defaultSoundUri);
notificationBuilder.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, importance);
notificationManager.createNotificationChannel(channel);
}
notificationManager.notify(0, notificationBuilder.build());
}

我现在面临的问题是，当应用程序在后台运行时，我确实在通知面板中收到通知，单击它打开主要活动，但 TextView 中的文本没有更新。

Answer 1

解决您问题的两个想法：

1. 您是否在 AndroidManifest 中注册了VAFirebaseMessagingService.xml：

2. 从 Android 8 开始，您必须使用通知通道发送推送通知。人造人