TabBarViewController *tabViewController = [TabBarViewController new];
[self addChildViewController:tabViewController];
[self.view addSubview:tabViewController.view];
[tabViewController.view setFrame:self.content.frame]; //確定view大小,必須設置
TabBarViewController *tabViewController = [TabBarViewController new];
[self addChildViewController:tabViewController];
[self.view addSubview:tabViewController.view];
[tabViewController.view setFrame:self.content.frame]; //確定view大小,必須設置