android - 可扩展通知不显示大图像

Question

我想制作一个包含大图像的通知。我已经搜索并找到了一些代码并进行了自定义，但它没有显示大图像。这是我的代码；

private class sendNotification extends AsyncTask<String, Void, Bitmap> {
    Bitmap remote_picture = null;
    Context ctx;
    String message;

    @Override
    protected Bitmap doInBackground(String... params) {

        InputStream in;
        message = "msg";

        try {
            URL url = new URL("http://website.com/img.png");
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            in = connection.getInputStream();
            remote_picture = BitmapFactory.decodeStream(in);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onPostExecute(Bitmap result) {

        super.onPostExecute(result);
        // Create the style object with BigPictureStyle subclass.
        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        NotificationCompat.BigPictureStyle notiStyle = new NotificationCompat.BigPictureStyle();
        notiStyle.setBigContentTitle("Big Picture Expanded");
        notiStyle.setSummaryText("Nice big picture.");

        // Add the big picture to the style.
        notiStyle.bigPicture(remote_picture);

        // Creates an explicit intent for an ResultActivity to receive.
        Intent resultIntent = new Intent(FistActiivty.this, FistActiivty.class);

        // This ensures that the back button follows the recommended
        // convention for the back key.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(FistActiivty.this);

        // Adds the back stack for the Intent (but not the Intent itself).
        stackBuilder.addParentStack(FistActiivty.class);

        // Adds the Intent that starts the Activity to the top of the stack.
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

        Notification myNotification = new NotificationCompat.Builder(FistActiivty.this)
                .setSmallIcon(R.drawable.ic_launcher).setAutoCancel(false).setLargeIcon(remote_picture)
                .setContentIntent(resultPendingIntent).setContentTitle("Big Picture Normal")
                .setContentText("This is an example of a Big Picture Style.").setStyle(notiStyle).build();
        notificationManager.notify(1, myNotification);
    }
}

当活动运行时。它显示通知，但不显示图像。

我做错了什么？

谢谢

Answer 1

可能是图片太大或者您没有展开图片（通过拉下它）。

您还可以设置通知的优先级。这可能会自动展开您的通知图片。

.setPriority(Notification.PRIORITY_MAX)

Answer 2

在通知活动中设置通知的优先级。并保持图像尺寸小。

.setPriority(Notification.PRIORITY_MAX)