java - 通知 oreo api 26 - 工作正常，现在不行

Question

在实现 channel 等后，我的通知工作完美，但随后它突然停止工作。我想知道为什么，可能是依赖项，还是我的代码有其他问题？

通知代码:

 public void initiateNotification(){

    NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    builder = new Notification.Builder(this);


    Intent notiIntent = new Intent(this, MainPage.class);
    notiIntent.putExtra("fileName", storage.getFileName(Calendar.getInstance()));
    notiIntent.setAction("NOTI");
    notiIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent pi = PendingIntent.getActivity(this, 0, notiIntent, 0);

    Intent stopIntent = new Intent(this, Services.class);
    stopIntent.setAction("STOP");
    PendingIntent stopPi = PendingIntent.getService(this, 0, stopIntent, 0);
    Notification.Action stopAction = new Notification.Action.Builder(null, "STOP", stopPi).build();



    //test
    int notifyID = 1;
    String CHANNEL_ID = "my_channel_01";// The id of the channel.
    CharSequence name = getString(R.string.channel_name);// The user-visible name of the channel.
    int importance = NotificationManager.IMPORTANCE_HIGH;
   NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);

    Notification noti = new Notification.Builder(Services.this)
            .setContentTitle("Well Done! Stay Active!")
            .setContentText("Number of Steps : " + mSteps)
            .setSmallIcon(R.drawable.bino_small)
            .setContentIntent(pi)
            .setChannelId(CHANNEL_ID)
            .build();


    startForeground(1, noti);
}

SDK 版本:

• 编译SdkVersion:27
• buildTools版本:27.0.3
• minSdkVersion:26
• 目标SdkVersion:26

我查看了许多解决方案并尝试了所有解决方案，但似乎没有任何帮助。提前致谢。

Answer 1

您还需要创建通知 channel ，以防通知 channel 不存在。 (第一次启动时总是如此。)

这可以通过

来完成

    NotificationManager notificationManager = getSystemService(NotificationManager.class);
    notificationManager.createNotificationChannel(channel);

另请注意，创建 channel 后您无法再更改重要性。

更新

添加 channel 创建是在 channel 初始化后完成的。所以你的代码中的这一行:

NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);

将成为

NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(mChannel);