Question

我的要求是，在tablayout片段内-> recyclerview->包含2个按钮（批准/拒绝），如果管理员单击了批准，则必须发送该特定用户的通知，请对此提供帮助。 ...

public void displayNotification（活动活动）{

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        NotificationManager mNotificationManager =
                (NotificationManager) activity.getSystemService(activity.NOTIFICATION_SERVICE);
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel mChannel = new NotificationChannel(CHANNNEL_ID, CHANNEL_NAME, importance);
        mChannel.setDescription(CHANNEL_DESC);
        mChannel.enableLights(true);
        mChannel.setLightColor(Color.RED);
        mChannel.enableVibration(true);
        mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
        mNotificationManager.createNotificationChannel(mChannel);
    }

    PendingIntent helpPendingIntent = PendingIntent.getBroadcast(
            activity,
            REQUEST_CODE_HELP,
            new Intent(activity, NotificationReceiver.class)
                    .putExtra(KEY_INTENT_HELP, REQUEST_CODE_HELP),
            PendingIntent.FLAG_UPDATE_CURRENT
    );


    RemoteInput remoteInput = new RemoteInput.Builder(NOTIFICATION_REPLY)
            .build();


    NotificationCompat.Action action =
            new NotificationCompat.Action.Builder(android.R.drawable.ic_delete,
                    "Check Now...", helpPendingIntent)
                    .addRemoteInput(remoteInput)
                    .build();

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(activity, CHANNNEL_ID)
            .setSmallIcon(android.R.drawable.ic_dialog_email)
            .setContentTitle("Demo app")
            .setContentText("approved clicked")
            .setAutoCancel(true)
            .setContentIntent(helpPendingIntent)
            .addAction(action)
            .addAction(android.R.drawable.ic_menu_directions, "cancel", helpPendingIntent);

    NotificationManager notificationManager = (NotificationManager) activity.getSystemService(NOTIFICATION_SERVICE);
    notificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}

这是我的代码，它在片段中可以很好地工作，但是在回收器视图中，它显示了空指针异常，而且我认为getActivity（）在回收器视图适配器中也不起作用。

请提出任何建议...

是否可以在回收者视图中在按钮上单击后发送通知？

0 个答案: