don't hide titlebar for board if there's no menu key, since on such

devices there's no other way to get to the menu.

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

@@ -21,13 +21,16 @@
 package org.eehouse.android.xw4;
 
 import android.app.Activity;
-
+import android.content.Context;
+import android.view.ViewConfiguration;
 
 public class ABUtils {
+    private static int s_sdkVersion = 
+        Integer.valueOf( android.os.Build.VERSION.SDK );
+
     private static interface SafeInvalOptionsMenu {
         public void doInval( Activity activity );
     }
-
     private static class SafeInvalOptionsMenuImpl 
         implements SafeInvalOptionsMenu {
         public void doInval( Activity activity ) {
@@ -35,11 +38,26 @@ public class ABUtils {
         }
     }
     private static SafeInvalOptionsMenu s_safeInval = null;
+
+    private static interface SafeHasMenuKey {
+        public boolean hasMenuKey( Context context );
+    }
+    private static class SafeHasMenuKeyImpl 
+        implements SafeHasMenuKey {
+        public boolean hasMenuKey( Context context )
+        {
+            return ViewConfiguration.get(context).hasPermanentMenuKey();
+        }
+    }
+    private static SafeHasMenuKey s_safeHas = null;
+
     static {
-        int sdkVersion = Integer.valueOf( android.os.Build.VERSION.SDK );
-        if ( 11 <= sdkVersion ) {
+        if ( 11 <= s_sdkVersion ) {
             s_safeInval = new SafeInvalOptionsMenuImpl();
         }
+        if ( 14 <= s_sdkVersion ) {
+            s_safeHas = new SafeHasMenuKeyImpl();
+        }
     }
 
     public static void invalidateOptionsMenuIf( Activity activity )
@@ -54,4 +72,20 @@ public class ABUtils {
         return null != s_safeInval;
     }
 
+    // http://stackoverflow.com/questions/10929579/how-to-check-if-android-phone-has-hardware-menu-button-in-android-2-1:
+    // If SDK <= 10, assume yes; >= 14, use the API; in the middle,
+    // assume no
+    public static boolean haveMenuKey( Context context )
+    {
+        boolean result;
+        if ( s_sdkVersion <= 10 ) {
+            result = true;
+        } else if ( s_sdkVersion < 14 ) {
+            result = false;
+        } else {
+            result = s_safeHas.hasMenuKey( context );
+        }
+        return result;
+    }
+
 }

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

@@ -543,7 +543,8 @@ public class BoardActivity extends XWActivity
         super.onCreate( savedInstanceState );
         getBundledData( savedInstanceState );
 
-        if ( CommonPrefs.getHideTitleBar( this ) ) {
+        if ( CommonPrefs.getHideTitleBar( this )
+             && ABUtils.haveMenuKey( this ) ) {
             requestWindowFeature( Window.FEATURE_NO_TITLE );
         }
 
@@ -2047,10 +2048,13 @@ public class BoardActivity extends XWActivity
 
             clearThis();
 
-            // Before we dispose, and after JNIThread has relinquished
-            // interest, redraw on smaller scale.
-            Bitmap thumb = GameUtils.takeSnapshot( this, m_jniGamePtr, m_gi );
-            DBUtils.saveThumbnail( this, m_gameLock, thumb );
+            if ( XWPrefs.getThumbEnabled( this ) ) {
+                // Before we dispose, and after JNIThread has
+                // relinquished interest, redraw on smaller scale.
+                Bitmap thumb = 
+                    GameUtils.takeSnapshot( this, m_jniGamePtr, m_gi );
+                DBUtils.saveThumbnail( this, m_gameLock, thumb );
+            }
 
             XwJNI.game_dispose( m_jniGamePtr );
             m_jniGamePtr = 0;