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-(void)viewWillAppear:(BOOL)animated { NSArray *array=self.tabBarController.view.subviews; UIView *view=array[2]; view.frame=CGRectMake(0, [UIScreen mainScreen ].bounds.size.height, [UIScreen mainScreen ].bounds.size.width, 49); [UIView commitAnimations]; } - (void)viewWillDisappear:(BOOL)animated { NSArray *array=self.tabBarController.view.subviews; UIView *view=array[2]; view.frame=CGRectMake(0, [UIScreen mainScreen ].bounds.size.height-49, [UIScreen mainScreen ].bounds.size.width, 49); [UIView commitAnimations]; }