- Fix

Pod/Classes/TabBarItem.m

@@ -28,6 +28,7 @@
         _orientation = [[UIDevice currentDevice] orientation];
         
         _itemButton = [[UIButton alloc] initForAutoLayout];
+        [_itemButton setBackgroundColor:[UIColor whiteColor]];
         
         [self addSubview:_itemButton];
         
@@ -44,7 +45,8 @@
 
 - (void) layoutSubviews {
     
-    [_itemButton autoPinEdgesToSuperviewMargins];
+    //[_itemButton autoPinEdgesToSuperviewMargins];
+    [_itemButton autoCenterInSuperview];
     
 }
 

Pod/Classes/TabBarPicker.m

@@ -60,13 +60,22 @@
         }
     }
     
-    [self setNeedsUpdateConstraints];
+    [self updateConstraintsIfNeeded];
     
     return self;
 }
 
 - (void) layoutSubviews {
     
+    if ([self.constraints count] > 0) {
+        
+        [NSLayoutConstraint deactivateConstraints:self.constraints];
+        
+        for (TabBarItem *item in _tabBarItems) {
+            [item.constraints autoRemoveConstraints];
+        }
+    }
+    
     switch (_position) {
         case TabBarPickerPositionLeft:{
             [self autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:20];
@@ -111,6 +120,7 @@
             break;
         case TabBarPickerPositionBottom:
         default:{
+            
             [self autoPinEdgeToSuperviewMargin:ALEdgeBottom];
             [self autoSetDimension:ALDimensionHeight toSize:44];
             [self autoMatchDimension:ALDimensionWidth toDimension:ALDimensionWidth ofView:self.superview withOffset:0 relation:_layoutRelation];
@@ -118,26 +128,20 @@
             
             [_tabBarItems autoSetViewsDimension:ALDimensionHeight toSize:44.0];
             
-            [_tabBarItems autoDistributeViewsAlongAxis:ALAxisHorizontal alignedTo:ALAttributeHorizontal withFixedSpacing:0 insetSpacing:YES matchedSizes:YES];
-            
             [[_tabBarItems firstObject] autoAlignAxisToSuperviewAxis:ALAxisHorizontal];
+            
+            [_tabBarItems autoDistributeViewsAlongAxis:ALAxisHorizontal alignedTo:ALAttributeHorizontal withFixedSpacing:_itemSpacing insetSpacing:YES matchedSizes:YES];
         }
             break;
     }
     
-    [self updateConstraints];
+    [self updateConstraintsIfNeeded];
 }
 
 - (void) setPosition:(TabBarPickerPosition)position {
     _position = position;
     
     if (self.superview) {
-        [self removeConstraints:self.constraints];
-        
-        for (TabBarItem *item in _tabBarItems) {
-            [item removeConstraints:item.constraints];
-        }
-        
         [self layoutSubviews];
     }
 }
@@ -145,15 +149,11 @@
 - (void)deviceOrientationDidChange:(NSNotification *)notification {
     //Obtain current device orientation
     _orientation = [[UIDevice currentDevice] orientation];
-    
-    [self layoutSubviews];
 }
 
 - (void) addItem:(TabBarItem*) item {
     if (item && [item isKindOfClass:[TabBarItem class]]) {
         
-        NSLog(@"%@",self.constraints);
-        
         [_tabBarItems addObject:item];
         [item setBackgroundColor:[UIColor lightGrayColor]];
         [item setDelegate:self];
@@ -162,11 +162,6 @@
         
         if (self.superview) {
             
-            [self removeConstraints:self.constraints];
-            for (TabBarItem *item in _tabBarItems) {
-                [item removeConstraints:item.constraints];
-            }
-            
             [self layoutSubviews];
         }
     }