我花了几天的时间来解决这个问题。我的应用程序在Android 8.1版本崩溃,但在Android 8.0版本中完美运行。
我按照下面提供的链接尝试了许多解决方案,但我的应用程序仍无法打开。
Android 8.1 升级后 startForeground 失败
我在 FirebaseMessageService 类中检查了 Android 版本并为 Oreo 版本创建了通道,但是每次都显示以下错误:
android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x40 color=0x00000000 vis=PRIVATE)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1795)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:171)
at android.app.ActivityThread.main(ActivityThread.java:6649)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:824)
以下是我的代码,请帮我纠正这个问题。
public class MyFirebaseMessagingService extends FirebaseMessagingService
{
private NotificationManager notifManager;
Context mContext;
Random random = new Random();
int m = random.nextInt(9999 - 1000) + 1000;
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
{
sendNotification();
}
public void sendNotification()
{
Intent intent = new Intent(this, Home.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, m /* 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.app_icon)
.setContentTitle("Logipace")
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(message))
.setContentText(message)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
notificationBuilder.setDefaults(Notification.DEFAULT_SOUND);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Since android Oreo notification channel is needed.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
NotificationChannel channel = new NotificationChannel(channelId, "LOGIPACE", NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
}
notificationManager.notify(m /* ID of notification */, notificationBuilder.build());
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
}
以下是我在Activity类的onCreate()方法中使用的代码。
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);
notificationManager.createNotificationChannel(new NotificationChannel(channelId,
channelName, NotificationManager.IMPORTANCE_LOW));
}
帮我解决这个问题。