iOS switch语句中为什么不能直接进行页面跳转

没有复杂的逻辑 ，直接上代码。

switch (indexPath.row) {

case 0:

MyAccountViewController *myAccountVC = [[MyAccountViewController alloc]init];

[self.navigationController pushViewController:myAccountVC animated:YES];

break;

case 1:

MyorderViewController *MyorderVC = [[MyorderViewController alloc]init];

[self.navigationController pushViewController:MyorderVC animated:YES];

NSLog(@"服务订单");

break;

case 2:

NSLog(@"我的商品");

MyGoodsViewController *goodsViewController = [[MyGoodsViewController alloc]init];

[self.navigationController pushViewController:goodsViewController animated:YES];

break;

default:

break;

}

---

上面的代码Xcode会报错 ，解决方法是：在需要跳转的语句两端加上 {},如下引用部分。

switch (indexPath.row) {

case 0:

{

MyAccountViewController *myAccountVC = [[MyAccountViewController alloc]init];

[self.navigationController pushViewController:myAccountVC animated:YES];

}

break;

case 1:

{

MyorderViewController *MyorderVC = [[MyorderViewController alloc]init];

[self.navigationController pushViewController:MyorderVC animated:YES];

NSLog(@"服务订单");

}

break;

case 2:

{

NSLog(@"我的商品");

MyGoodsViewController *goodsViewController = [[MyGoodsViewController alloc]init];

[self.navigationController pushViewController:goodsViewController animated:YES];

}

break;

default:

break;

}