Reliable way of retrieving StatusbarNotification details (title, notification text)

问题

I'd like to get as much information out of a StatusBarNotification-object as possible. Right now, the only "reliable" information that can be accessed is the tickerText-property. I'm using the following code to get the notification's title and text via RemoteViews, but a lot of the time, the title and/or text will simply be null :-(:

    //Get the title and text
    String mTitle = "";
    String mText = "";
    try {
        RemoteViews remoteView = sbn.getNotification().contentView;
        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        ViewGroup localView = (ViewGroup) inflater.inflate(remoteView.getLayoutId(), null);
        remoteView.reapply(getApplicationContext(), localView);
        TextView tvTitle = (TextView) localView.findViewById(android.R.id.title);
        TextView tvText = (TextView) localView.findViewById(16908358);
        mTitle = (String)tvTitle.getText();
        mText = (String)tvText.getText();
    } catch (Exception e){
        Log.e(TAG, "Error getting notification title/text: " + e);
    }

Is there any alternative (more reliable) way? I could "hand-code" the resource IDs for "popular" notifications like Gmail, SMS, etc., but this may break at any time when those apps are updated. Thanks!

回答1:

With Android 4.4(KitKat), API Level 19 you can use Notification.extras attibute to get Notification title,text,....

http://gmariotti.blogspot.com/2013/11/notificationlistenerservice-and-kitkat.html

回答2:

Checking resource IDs is actually how TalkBack, the Android screen reader, parses notification types. It attempts to load IDs directly from various packages.

Check the source on Google Code for a full example. Here is a snippet:

private static int ICON_GMAIL;

private static boolean sHasLoadedIcons = false;

private static void loadIcons(Context context) {
    ...

    ICON_GMAIL = loadIcon(context, "com.google.android.gm",
        "com.google.android.gm.R$drawable", "stat_notify_email");

    sHasLoadedIcons = true;
}

public static NotificationType getNotificationTypeFromIcon(Context context, int icon) {
    if (!sHasLoadedIcons) {
        loadIcons(context);
    }

    ...

    if (icon == ICON_GMAIL) {
        return NotificationType.EMAIL;
    }
}

来源：https://stackoverflow.com/questions/18122198/reliable-way-of-retrieving-statusbarnotification-details-title-notification-te

标签

android

notifications

remoteview