tabbar在iOS8 中重疊的情況.就是原本已經(jīng)移除的UITabBarButton再次出現(xiàn)

既然是動(dòng)態(tài)添加。那么按照apple的一貫作風(fēng)。一定會調(diào)用viewWillAutolayout這個(gè)方法

- (void) viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
  
    
    
    // 刪除系統(tǒng)自動(dòng)生成的UITabBarButton
    
    for (UIView *child in self.tabBar.subviews) {
        
        if ([child isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
            
            [child removeFromSuperview];
            
        }
        
    }
    [super viewWillAppear:animated];
  
    
}

- (void)viewWillAppear:(BOOL)animated

{
    
    // 刪除系統(tǒng)自動(dòng)生成的UITabBarButton
    
    for (UIView *child in self.tabBar.subviews) {
        
        if ([child isKindOfClass:[UIControl class]]) {
            
            [child removeFromSuperview];
            
        }
        
    }
    
    [super viewWillAppear:animated];
    
}