diff --git a/XLPagerTabStrip/Demo/ChildViewController/TableChildExampleViewController.m b/XLPagerTabStrip/Demo/ChildViewController/TableChildExampleViewController.m
index 163f2d5..326416b 100644
--- a/XLPagerTabStrip/Demo/ChildViewController/TableChildExampleViewController.m
+++ b/XLPagerTabStrip/Demo/ChildViewController/TableChildExampleViewController.m
@@ -50,6 +50,16 @@ NSString *const kCellIdentifier = @"PostCell";
     [self.tableView registerClass:[PostCell class] forCellReuseIdentifier:kCellIdentifier];
 }
 
+-(void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+}
+
+-(void)viewDidAppear:(BOOL)animated
+{
+    [super viewDidAppear:animated];
+}
+
 #pragma mark - Table view data source
 
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
diff --git a/XLPagerTabStrip/XL/Controllers/XLPagerTabStripViewController.m b/XLPagerTabStrip/XL/Controllers/XLPagerTabStripViewController.m
index f23b046..3a97283 100644
--- a/XLPagerTabStrip/XL/Controllers/XLPagerTabStripViewController.m
+++ b/XLPagerTabStrip/XL/Controllers/XLPagerTabStripViewController.m
@@ -106,12 +106,12 @@
 -(void)viewWillAppear:(BOOL)animated
 {
     [super viewWillAppear:animated];
-    _lastSize = self.containerView.bounds.size;
 }
 
 -(void)viewDidAppear:(BOOL)animated
 {
     [super viewDidAppear:animated];
+    _lastSize = self.containerView.bounds.size;
     [self updateIfNeeded];
 }
 
@@ -285,8 +285,13 @@
 -(void)updateContent
 {
     if (!CGSizeEqualToSize(_lastSize, self.containerView.bounds.size)){
-        _lastSize = self.containerView.bounds.size;
-        [self.containerView setContentOffset:CGPointMake([self pageOffsetForChildIndex:self.currentIndex], 0) animated:NO];
+        if (_lastSize.width != self.containerView.bounds.size.width){
+            _lastSize = self.containerView.bounds.size;
+            [self.containerView setContentOffset:CGPointMake([self pageOffsetForChildIndex:self.currentIndex], 0) animated:NO];
+        }
+        else{
+            _lastSize = self.containerView.bounds.size;
+        }
     }
     NSArray * childViewControllers = self.pagerTabStripChildViewControllers;
     self.containerView.contentSize = CGSizeMake(CGRectGetWidth(self.containerView.bounds) * childViewControllers.count, self.containerView.contentSize.height);