Question

在Firebase消息传递系统中，onMessageReceived()方法在应用程序关闭时运行并获得推送通知。因此，我想在onMessageReceived()方法中使用SQLite。 SQLite必须需要一个上下文，但是由于应用程序已关闭，所以无法在该方法中获取ApplicationContext。关闭应用程序后如何获取应用程序上下文？

@Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        DatabaseHelper database = new DatabaseHelper(FirebaseMessagingService.this);
        database.updateTicket(Integer.parseInt(remoteMessage.getData().get("idx")));

        try{
            Badges.setBadge(this, 1);
        }catch(BadgesNotSupportedException e){
            e.printStackTrace();
        }

        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
        String channelId = "Default";

        NotificationCompat.Builder builder = new  NotificationCompat.Builder(this, channelId)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(remoteMessage.getNotification().getTitle())
                .setContentText(remoteMessage.getNotification().getBody()).setAutoCancel(true).setContentIntent(pendingIntent);;
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId, "Default channel", NotificationManager.IMPORTANCE_DEFAULT);
            manager.createNotificationChannel(channel);
        }
        manager.notify(0, builder.build());

        //sendPushNotification(remoteMessage.getData().get("title"), remoteMessage.getData().get("body"));
    }

这是我的onMessageReceived代码。问题是前两行不起作用的数据库代码。我已经检查过它可以在应用程序上运行，也可以在后台运行。

Answer 1

服务具有自己的上下文，并且为FirebaseMessagingService extends Service 因此您可以使用<?php $_config = $this->helper('Sm\Market\Helper\Data'); $headerStyle = $_config->getThemeLayout('header_style'); $_mobile_detect = $this->_objectManager- >get('Sm\Market\Helper\MobileDetect'); $deviceType = ($_mobile_detect->isMobile() ? ($_mobile_detect->isTablet() ? 'tablet' : 'phone') : 'computer'); //$deviceType = ($_mobile_detect->isMobile() && $_mobile_detect- >isTablet() == false) ? 'phone' : 'computer'; //var_dump($deviceType); die('here'); if ( $deviceType == 'computer') { include($block->getTemplateFile("Magento_Theme::html/header-style/" . $headerStyle . ".phtml")); }else{ include($block->getTemplateFile("Magento_Theme::html/header-style/header- 10.phtml")); } ?>或this

关闭应用程序后如何获取上下文？

1 个答案: