fix NavigationPage toolbar BackButton issue

  - TASK=TCAPI-2537

Change-Id: Ief93ba32de112753a51b4ea88f96fae02be479d3
Signed-off-by: darkleem <cdark.lim@samsung.com>

diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/NavigationPageRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/NavigationPageRenderer.cs
index 49f4557..36f199d 100644 (file)
--- a/Xamarin.Forms.Platform.Tizen/Renderers/NavigationPageRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/NavigationPageRenderer.cs
@@ -168,7 +168,7 @@ namespace Xamarin.Forms.Platform.Tizen
                        item.TitleBarVisible = (bool)page.GetValue(NavigationPage.HasNavigationBarProperty);
                        UpdateToolbarItem(page, item);
                        UpdateBarBackgroundColor(item);
-                       if(TizenPlatformServices.AppDomain.IsTizenSpecificAvailable)
+                       if (TizenPlatformServices.AppDomain.IsTizenSpecificAvailable)
                                UpdateBreadCrumbsBar(item);
                }
 
@@ -200,8 +200,10 @@ namespace Xamarin.Forms.Platform.Tizen
 
                        EButton button = null;
 
-                       if ((bool)page.GetValue(NavigationPage.HasBackButtonProperty))
+                       if ((bool)page.GetValue(NavigationPage.HasBackButtonProperty) && _naviFrame.NavigationStack.Count > 1)
+                       {
                                button = CreateNavigationButton((string)page.GetValue(NavigationPage.BackButtonTitleProperty));
+                       }
                        item.SetPartContent(PartBackButton, button);
                }