show message timestamp in the notification

Fixes #2632

Closes #2635

src/org/thoughtcrime/securesms/notifications/MessageNotifier.java

@@ -195,6 +195,9 @@ public class MessageNotifier {
     builder.setDeleteIntent(PendingIntent.getBroadcast(context, 0, new Intent(DeleteReceiver.DELETE_REMINDER_ACTION), 0));
     if (recipient.getContactUri() != null) builder.addPerson(recipient.getContactUri().toString());
 
+    long timestamp = notifications.get(0).getTimestamp();
+    if (timestamp != 0) builder.setWhen(timestamp);
+
     if (masterSecret != null) {
       builder.addAction(R.drawable.check, context.getString(R.string.MessageNotifier_mark_as_read),
                         notificationState.getMarkAsReadIntent(context, masterSecret));
@@ -243,6 +246,9 @@ public class MessageNotifier {
     builder.setNumber(notificationState.getMessageCount());
     builder.setCategory(NotificationCompat.CATEGORY_MESSAGE);
 
+    long timestamp = notifications.get(0).getTimestamp();
+    if (timestamp != 0) builder.setWhen(timestamp);
+
     builder.setDeleteIntent(PendingIntent.getBroadcast(context, 0, new Intent(DeleteReceiver.DELETE_REMINDER_ACTION), 0));
 
     if (masterSecret != null) {
@@ -330,7 +336,7 @@ public class MessageNotifier {
         SpannableString body       = new SpannableString(context.getString(R.string.MessageNotifier_encrypted_message));
         body.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
 
-        notificationState.addNotification(new NotificationItem(recipient, recipients, null, threadId, body, null));
+        notificationState.addNotification(new NotificationItem(recipient, recipients, null, threadId, body, null, 0));
       }
     } finally {
       if (reader != null)
@@ -356,6 +362,10 @@ public class MessageNotifier {
       CharSequence    body             = record.getDisplayBody();
       Uri             image            = null;
       Recipients      threadRecipients = null;
+      long            timestamp;
+
+      if (record.isPush()) timestamp = record.getDateSent();
+      else                 timestamp = record.getDateReceived();
 
       if (threadId != -1) {
         threadRecipients = DatabaseFactory.getThreadDatabase(context).getRecipientsForThreadId(threadId);
@@ -371,7 +381,7 @@ public class MessageNotifier {
         body = SpanUtil.italic(message, italicLength);
       }
 
-      notificationState.addNotification(new NotificationItem(recipient, recipients, threadRecipients, threadId, body, image));
+      notificationState.addNotification(new NotificationItem(recipient, recipients, threadRecipients, threadId, body, image, timestamp));
     }
 
     reader.close();

src/org/thoughtcrime/securesms/notifications/NotificationItem.java

@@ -19,10 +19,11 @@ public class NotificationItem {
   private final long         threadId;
   private final CharSequence text;
   private final Uri          image;
+  private final long         timestamp;
 
   public NotificationItem(Recipient individualRecipient, Recipients recipients,
                           Recipients threadRecipients, long threadId,
-                          CharSequence text, Uri image)
+                          CharSequence text, Uri image, long timestamp)
   {
     this.individualRecipient = individualRecipient;
     this.recipients          = recipients;
@@ -30,6 +31,7 @@ public class NotificationItem {
     this.text                = text;
     this.image               = image;
     this.threadId            = threadId;
+    this.timestamp           = timestamp;
   }
 
   public Recipient getIndividualRecipient() {
@@ -44,6 +46,10 @@ public class NotificationItem {
     return text;
   }
 
+  public long getTimestamp() {
+    return timestamp;
+  }
+
   public Uri getImage() {
     return image;
   }