Notification.Builder nb = new Notification.Builder(context)
    .setContentTitle("title")
    .setContentText("content")
    .setAutoCancel(true)
    .setLargeIcon(largeIcon)
    .setSmallIcon(R.drawable.small_icon)
    .setTicker(s.getText());

http://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#setSmallIcon%28int%29

http://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#setLargeIcon%28android.graphics.Bitmap%29

要么

作为替代方案,您可以使用自定义通知布局.