use gameID as inviteID, so that all devices in a game will be using

the same gameID -- and use that to reject as duplicates attempts to
use the same invitation more than once.

xwords4/android/XWords4/res/values/strings.xml

@@ -2173,7 +2173,8 @@
 
     <string name="prefs_thumb">Thumbnails</string>
     <string name="prefs_thumb_summary">Setting for game snapshots</string>
-    <string name="dropped_dupe">Invitation ignored: already used</string>
+    <string name="dropped_dupe">Invitation received but ignored: it
+    has already been used to create a game.</string>
     <string name="cur_menu_markerf">%1$s (yours)</string>
     <string name="board_menu_invite">Invite</string>
 

xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java

@@ -128,6 +128,7 @@ public class BoardActivity extends XWActivity
     private int m_jniGamePtr;
     private GameLock m_gameLock;
     private CurGameInfo m_gi;
+    private GameSummary m_summary;
     private CommsTransport m_xport;
     private Handler m_handler = null;
     private TimerRunnable[] m_timers;
@@ -1197,8 +1198,10 @@ public class BoardActivity extends XWActivity
     {
         String data = null;
         if ( 0 < m_missing ) {  // Isn't there a better test??
-            String inviteID = GameUtils.makeRandomID();
+            String inviteID = String.format( "%X", m_gi.gameID );
-            data = NetLaunchInfo.makeLaunchJSON( this, m_room, inviteID,
+            String room = m_summary.roomName;
+            Assert.assertNotNull( room );
+            data = NetLaunchInfo.makeLaunchJSON( this, room, inviteID,
                                                  m_gi.dictLang, 
                                                  m_gi.dictName, m_gi.nPlayers );
         }
@@ -1844,6 +1847,9 @@ public class BoardActivity extends XWActivity
                                                 pairs.m_paths, langName );
                     }
 
+                    m_summary = new GameSummary( this, m_gi );
+                    XwJNI.game_summarize( m_jniGamePtr, m_summary );
+
                     Handler handler = new Handler() {
                             public void handleMessage( Message msg ) {
                                 switch( msg.what ) {

xwords4/android/XWords4/src/org/eehouse/android/xw4/GameUtils.java

@@ -411,7 +411,8 @@ public class GameUtils {
     {
         long rowid = -1;
 
-        CurGameInfo gi = new CurGameInfo( context, true );
+        Assert.assertNotNull( inviteID );
+        CurGameInfo gi = new CurGameInfo( context, inviteID );
         gi.setLang( lang[0], dict[0] );
         lang[0] = gi.dictLang;
         dict[0] = gi.dictName;

xwords4/android/XWords4/src/org/eehouse/android/xw4/GamesList.java

@@ -1068,9 +1068,9 @@ public class GamesList extends XWExpandableListActivity
             String msg = getString( R.string.dup_game_queryf, 
                                     create.toString() );
             m_netLaunchInfo = nli;
-            showConfirmThen( msg, GamesActions.NEW_NET_GAME.ordinal() );
+            showConfirmThen( msg, GamesActions.NEW_NET_GAME.ordinal(), nli );
         } else {
-            Utils.showToast( this, R.string.dropped_dupe );
+            showOKOnlyDialog( R.string.dropped_dupe );
         }
     } // startNewNetGame
 
@@ -1252,9 +1252,9 @@ public class GamesList extends XWExpandableListActivity
         launchGame( rowid, false );
     }
 
-    private void makeNewNetGame( NetLaunchInfo info )
+    private void makeNewNetGame( NetLaunchInfo nli )
     {
-        long rowid = GameUtils.makeNewNetGame( this, info );
+        long rowid = GameUtils.makeNewNetGame( this, nli );
         launchGame( rowid, true );
     }
 

xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/CurGameInfo.java

@@ -60,11 +60,12 @@ public class CurGameInfo {
 
     public CurGameInfo( Context context )
     {
-        this( context, false );
+        this( context, (String)null );
     }
 
-    public CurGameInfo( Context context, boolean isNetworked )
+    public CurGameInfo( Context context, String inviteID )
     {
+        boolean isNetworked = null != inviteID;
         m_context = context;
         nPlayers = 2;
         gameSeconds = 60 * nPlayers *
@@ -81,6 +82,11 @@ public class CurGameInfo {
         allowHintRect = false;
         m_smartness = 0;        // needs to be set from players
 
+        try {
+            gameID = (null == inviteID) ? 0 : Integer.parseInt( inviteID, 16 );
+        } catch ( Exception ex ) {
+        }
+
         // Always create MAX_NUM_PLAYERS so jni code doesn't ever have
         // to cons up a LocalPlayer instance.
         for ( int ii = 0; ii < MAX_NUM_PLAYERS; ++ii ) {