Merge pull request mutualmobile#240 from mutualmobile/center-view-con…

…tainer-double-call

Fixing double center container view being created and added to view heir...

MMDrawerController/MMDrawerController.m

@@ -384,16 +384,28 @@ -(void)setCenterViewController:(UIViewController *)centerViewController animated
     if ([self.centerViewController isEqual:centerViewController]) {
         return;
     }
+
+  if (_centerContainerView == nil) {
+    //This is related to Issue #152 (https://github.com/mutualmobile/MMDrawerController/issues/152)
+    // also fixed below in the getter for `childControllerContainerView`. Turns out we have
+    // two center container views getting added to the view during init,
+    // because the first request self.centerContainerView.bounds was kicking off a
+    // viewDidLoad, which caused us to be able to fall through this check twice.
+    //
+    //The fix is to grab the bounds, and then check again that the child container view has
+    //not been created.
 
+    CGRect centerFrame = self.childControllerContainerView.bounds;
     if(_centerContainerView == nil){
-        _centerContainerView = [[MMDrawerCenterContainerView alloc] initWithFrame:self.childControllerContainerView.bounds];
+        _centerContainerView = [[MMDrawerCenterContainerView alloc] initWithFrame:centerFrame];
         [self.centerContainerView setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
         [self.centerContainerView setBackgroundColor:[UIColor clearColor]];
         [self.centerContainerView setOpenSide:self.openSide];
         [self.centerContainerView setCenterInteractionMode:self.centerHiddenInteractionMode];
         [self.childControllerContainerView addSubview:self.centerContainerView];
     }
-
+  }
+
     UIViewController * oldCenterViewController = self.centerViewController;
     if(oldCenterViewController){
         if(animated == NO){