Java Android通知没有任何作用

我的英语很差。我想要一个关于按钮按下的通知，按钮按下工作正常，因为祝酒词“没问题！”正在显示，但不要做任何事情。当按下按钮时，我在logcat中发现一个警告：

W/libEGL: EGLNativeWindowType 0x75cc082010 disconnect failed

我知道我必须使用CHANNEL_ID，但这并不更好。祝酒词显示

public void sendNotification() {
    Toast.makeText(this, "ITS OKAY!", Toast.LENGTH_SHORT).show();
    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this, "CHANNEL_ID")
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("It is my notification's Title!")
                    .setContentText("Notification Body!");
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(1, mBuilder.build());
}

---

我想要一个通知，但我的代码没有做任何事情，只是祝酒！：（

如前所述，您必须为比Android O更新的版本创建通知通道。如文档中所述，您可以这样做：

 createNotificationChannel();
 Notification notification = new NotificationCompat.Builder(this, "channelID")
              .setSmallIcon(R.drawable.notification_icon)
              .setContentTitle("My notification")
              .setContentText("Much longer text that cannot fit one line...")
              .build();


 private void createNotificationChannel() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        int importance = NotificationManager.IMPORTANCE_DEFAULT;
        NotificationChannel serviceChannel = new NotificationChannel(
                "channelID",
                "Channel Name",
                importance
        );

        NotificationManager manager = getSystemService(NotificationManager.class);
        manager.createNotificationChannel(serviceChannel);
    }
}

---

如前所述，您必须为比Android O更新的版本创建通知通道。如文档中所述，您可以这样做：

 createNotificationChannel();
 Notification notification = new NotificationCompat.Builder(this, "channelID")
              .setSmallIcon(R.drawable.notification_icon)
              .setContentTitle("My notification")
              .setContentText("Much longer text that cannot fit one line...")
              .build();


 private void createNotificationChannel() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        int importance = NotificationManager.IMPORTANCE_DEFAULT;
        NotificationChannel serviceChannel = new NotificationChannel(
                "channelID",
                "Channel Name",
                importance
        );

        NotificationManager manager = getSystemService(NotificationManager.class);
        manager.createNotificationChannel(serviceChannel);
    }
}

---

您必须先创建通知通道，然后才能发送通知请在

Android fundamentals 08.1:Notifications上遵循google提供的此代码实验室：并获取详细信息：您必须先创建通知通道，然后才能发送通知请在
Android fundamentals上遵循google提供的此代码实验室08.1：通知
：并获得详细的完整活动：谢谢您，先生！工作顺利！谢谢您，先生！工作顺利！