收到来自urbanairship android的推送通知时获取channel = null答案

【问题标题】：Getting channel = null when receiving push notification from urbanairship android收到来自urbanairship android的推送通知时获取channel = null
【发布时间】：2018-11-14 21:42:07
【问题描述】：

当我向我的设备发送推送通知时，我收到可怕的“开发者警告包“com.mycompany.applicationame”无法在频道“null”上发布通知”Toast 消息。我正在运行 Android API 27。这是我的代码：

public class UAAutoPilot extends Autopilot {

@Override
public void onAirshipReady(@NonNull UAirship airship) {
    airship.getPushManager().setUserNotificationsEnabled(true);

    // Android O
    if (Build.VERSION.SDK_INT >= 26) {
        Context context = UAirship.getApplicationContext();
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);


        NotificationChannel channel = new NotificationChannel("customChannel",
                context.getString(R.string.custom_channel),
                        NotificationManager.IMPORTANCE_DEFAULT);

        notificationManager.createNotificationChannel(channel);

    }
    // Create a customized default notification factory
    CustomNotificationFactory notificationFactory;
    notificationFactory = new CustomNotificationFactory(UAirship.getApplicationContext());

    // Set the factory on the PushManager
    airship.getPushManager()
            .setNotificationFactory(notificationFactory);


    airship.getPushManager()
            .getNotificationFactory()
            .setNotificationChannel("customChannel");

}

}

Logcat 消息：

2018-11-14 14:00:52.821 1683-13152/system_process E/NotificationService: 找不到频道 pkg=com.mycompany.applicationame，channelId=null，id=1007，tag=null， opPkg=com.mycompany.applicationame，callingUid=10081，userId=0， incomingUserId=0, 通知

通知显示，但我收到此错误消息。 UrbanAirship 的新手。我看不出我做错了什么。

【问题讨论】：

标签： android push-notification urbanairship.com

【解决方案1】：

问题是我没有正确设置通知生成器。

public class CustomNotificationFactory extends NotificationFactory {

Context context;
String channelID = "";

public CustomNotificationFactory(Context context, String channelID) {
    super(context);
    this.context = context;
    this.channelID = channelID;
}

@Override
public Notification createNotification(PushMessage message, int notificationId) {
    // do not display a notification if there is not an alert
    if (UAStringUtil.isEmpty(message.getAlert())) {
        return null;
    }

    // Build the notification
    NotificationCompat.Builder builder = new NotificationCompat.Builder(getContext(),channelID) //wasn't sending in channelID here.  
            .setContentTitle(context.getResources().getString(R.string.notification_title))
            .setContentText(message.getAlert())
            .setAutoCancel(true)
            .setSmallIcon(R.drawable.ic_notification);

    // Notification action buttons
    builder.extend(new ActionsNotificationExtender(getContext(), message, notificationId));

    return builder.build();
}

@Override
public int getNextId(PushMessage pushMessage) {
    return NotificationIdGenerator.nextID();
}


@Override
public boolean requiresLongRunningTask(PushMessage message) {
    return false;
}

}

【讨论】：