Handle long press on back buttons

Riot/Modules/TabBar/MasterTabBarController.m

@@ -112,7 +112,7 @@
     [self vc_removeBackTitle];
     
     [self setupTitleView];
-    titleView.titleLabel.text = [VectorL10n titleHome];
+    self.titleLabelText = [VectorL10n titleHome];
     
     childViewControllers = [NSMutableArray array];
     
@@ -278,8 +278,8 @@
         }
     }
     
-    titleView.titleLabel.text = [self getTitleForItemViewController:self.selectedViewController];
-    
+    self.titleLabelText = [self getTitleForItemViewController:self.selectedViewController];
+
     // Need to be called in case of the controllers have been replaced
     [self.selectedViewController viewDidAppear:NO];
 }
@@ -299,7 +299,7 @@
     NSInteger index = [self indexOfTabItemWithTag:tabBarIndex];
     self.selectedIndex = index;
     
-    titleView.titleLabel.text = [self getTitleForItemViewController:self.selectedViewController];
+    self.titleLabelText = [self getTitleForItemViewController:self.selectedViewController];
 }
 
 #pragma mark -
@@ -703,6 +703,12 @@
     self.navigationItem.titleView = titleView;
 }
 
+-(void)setTitleLabelText:(NSString *)text
+{
+    titleView.titleLabel.text = text;
+    self.navigationItem.backButtonTitle = text;
+}
+
 - (void)presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion
 {
     // Keep ref on presented view controller
@@ -1038,7 +1044,7 @@
 
 - (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
 {
-    titleView.titleLabel.text = [self getTitleForItemViewController:viewController];
+    self.titleLabelText = [self getTitleForItemViewController:viewController];
 }
 
 @end