move dialog asking to enable NFC into NFCUtils, and use it when

creating a new game to be invited via (disabled) NFC

xwords4/android/XWords4/res/layout/new_game.xml

@@ -88,7 +88,7 @@
                   android:layout_width="fill_parent" 
                   android:layout_height="wrap_content"
                   >
-      <Button android:id="@+id/newgame_invite"
+      <Button android:id="@+id/newgame_invite_net"
               android:text="@string/newgame_invite" 
               style="@style/spaced_buttons"
               />

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

@@ -515,19 +515,7 @@ public class BoardActivity extends XWActivity
                 break;
 
             case ENABLE_NFC:
-                lstnr = new DialogInterface.OnClickListener() {
+                dialog = NFCUtils.makeEnableNFCDialog( this );
-                        public void onClick( DialogInterface dialog, 
-                                             int item ) {
-                            startActivity( new Intent("android.settings"
-                                                      + ".NFC_SETTINGS" ) );
-                        }
-                    };
-                dialog = new AlertDialog.Builder( this )
-                    .setTitle( R.string.info_title )
-                    .setMessage( R.string.enable_nfc )
-                    .setPositiveButton( R.string.button_cancel, null )
-                    .setNegativeButton( R.string.button_go_settings, lstnr )
-                    .create();
                 break;
 
             default:

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

@@ -21,7 +21,11 @@
 package org.eehouse.android.xw4;
 
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
 import android.content.Context;
+import android.content.DialogInterface.OnClickListener;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.nfc.NdefMessage;
 import android.nfc.NdefRecord;
@@ -116,6 +120,25 @@ public class NFCUtils {
         }
     }
 
+    public static Dialog makeEnableNFCDialog( final Activity activity )
+    {
+        DialogInterface.OnClickListener lstnr
+            = new DialogInterface.OnClickListener() {
+                    public void onClick( DialogInterface dialog, 
+                                         int item ) {
+                        activity.
+                            startActivity( new Intent("android.settings"
+                                                      + ".NFC_SETTINGS" ) );
+                    }
+                };
+        return new AlertDialog.Builder( activity )
+            .setTitle( R.string.info_title )
+            .setMessage( R.string.enable_nfc )
+            .setPositiveButton( R.string.button_cancel, null )
+            .setNegativeButton( R.string.button_go_settings, lstnr )
+            .create();
+    }
+
     private static NdefMessage makeMessage( Activity activity, String data )
     {
         String mimeType = activity.getString( R.string.xwords_nfc_mime );

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

@@ -1,6 +1,6 @@
 /* -*- compile-command: "cd ../../../../../; ant debug install"; -*- */
 /*
- * Copyright 2009-2010 by Eric House (xwords@eehouse.org).  All
+ * Copyright 2009 - 2013 by Eric House (xwords@eehouse.org).  All
  * rights reserved.
  *
  * This program is free software; you can redistribute it and/or
@@ -59,6 +59,7 @@ public class NewGameActivity extends XWActivity {
 
     // Dialogs
     private static final int NAME_GAME = DlgDelegate.DIALOG_LAST + 1;
+    private static final int ENABLE_NFC = DlgDelegate.DIALOG_LAST + 2;
     
     private boolean m_showsOn;
     private boolean m_nameForBT;
@@ -103,7 +104,7 @@ public class NewGameActivity extends XWActivity {
                 }
             } );
 
-        button = (Button)findViewById( R.id.newgame_invite );
+        button = (Button)findViewById( R.id.newgame_invite_net );
         button.setOnClickListener( new View.OnClickListener() {
                 @Override
                 public void onClick( View v ) {
@@ -254,6 +255,9 @@ public class NewGameActivity extends XWActivity {
                     .create();
                 Utils.setRemoveOnDismiss( this, dialog, id );
 
+                break;
+            case ENABLE_NFC:
+                dialog = NFCUtils.makeEnableNFCDialog( this );
                 break;
             }
         }
@@ -318,6 +322,10 @@ public class NewGameActivity extends XWActivity {
     private void makeNewGame( boolean networked, boolean launch,
                               int chosen )
     {
+        if ( DlgDelegate.NFC_BTN == chosen
+             && !NFCUtils.nfcAvail( this )[1] ) {
+            showDialog( ENABLE_NFC );
+        } else {
             String room = null;
             String inviteID = null;
             long rowid;
@@ -331,7 +339,8 @@ public class NewGameActivity extends XWActivity {
                 rowid = GameUtils.makeNewNetGame( this, m_groupID, room, inviteID, 
                                                   lang, dict, nPlayers, 1 );
             } else {
-            rowid = GameUtils.saveNew( this, new CurGameInfo( this ), m_groupID );
+                rowid = GameUtils.saveNew( this, new CurGameInfo( this ), 
+                                           m_groupID );
             }
 
             if ( launch ) {
@@ -347,6 +356,7 @@ public class NewGameActivity extends XWActivity {
 
             finish();
         }
+    }
 
     private void makeNewBTGame( boolean useDefaults )
     {