Question

我想在应用收到进一步处理的通知时打开一个片段。在我的MainActivity.java中，getIntent().getExtras()始终返回null。

MyFirebaseMessagingService.java

  private void sendNotification(String title, String messageBody, String newsID, String newsType) {

    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);

    Bundle extras = new Bundle();
    extras.putString("newsID", String.valueOf(newsID));
    extras.putString("newsType", String.valueOf(newsType));
    intent.putExtras(extras);

    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle(title)
            .setContentText(messageBody)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    notificationManager.notify(0, notificationBuilder.build());
}

MainActivity.java

Bundle i = getIntent().getExtras();
    if (i != null) {

        for (String key : getIntent().getExtras().keySet()) {
            String value = getIntent().getExtras().getString(key);

            Log.e("News ID", value);
            if (key.equals("newsID") ) {
                dbHelper.insertNewsID(String.valueOf(value));

                //show news details
                   getSupportFragmentManager()
                        .beginTransaction()
                        .replace(ng.naijaleague.R.id.frame_container, new NewsDetails())
                        .addToBackStack(null).commit();
            }
        }
        String newsType = getIntent().getExtras().getString("newsType");
        if ("newsType".equals(newsType) ) {
            String value = getIntent().getExtras().getString("newsType");

            if("Local".equals(value)){
                //add news type to shared preference
                SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
                SharedPreferences.Editor editor = preferences.edit();
                editor.putString("newType", "Local");
                editor.apply();
            }else{
                //add news type to shared preference
                SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
                SharedPreferences.Editor editor = preferences.edit();
                editor.putString("newType", "Foreign");
                editor.apply();
            }
        }
    }

我已经完成了我在SO上找到的所有解决方案，但到目前为止它们都没有。代码有什么问题？

Answer 1

在发出 PendingIntent 对象：P

之前发布这4行

Bundle extras = new Bundle();
extras.putString("newsID", String.valueOf(newsID));
extras.putString("newsType", String.valueOf(newsType));
intent.putExtras(extras);

LIKE：

Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

//PUT HERE
Bundle extras = new Bundle();
extras.putString("newsID", String.valueOf(newsID));
extras.putString("newsType", String.valueOf(newsType));
intent.putExtras(extras);

//THEN Create PendingIntent Object
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

希望它能帮到你:)。

Answer 2

在创建待定意图之前移动额外内容

添加标志：

FLAG_ACTIVITY_NEW_TASK

注意，与使用 PendingIntent.getActivity（...）时相比，活动将在现有活动的上下文之外启动，因此您必须使用 Intent.FLAG_ACTIVITY_NEW_TASK 在意图中启动标志。

Answer 3

感谢所有人，所有答案都让我更接近于使其成功但我需要将PendingIntent更改为以下内容以确定它。

    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

感谢...＆LT; 3

getIntent（）。getExtras（）返回null Android

3 个答案: