我們在做項目市經常遇到這樣的需求：點擊按鈕跳轉到購物車或者首頁。方法如下：

self.tabBarController.selectedIndex = 0;//更改selectedIndex選擇tabbar的選項
[self.navigationController popToRootViewControllerAnimated:YES];

或者

[self.navigationController popToRootViewControllerAnimated:YES];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
appDelegate.window.rootViewController = [[TabBarViewController alloc]init];