ios - [ self.navigationController popViewControllerAnimated :YES ]; doesn't work in delegate callback

Question

我有 A -> B ->C Controller ，与下一个委托(delegate)链接:

@protocol ViewControllerDelegate <NSObject>

- (void)onResult:(ControllerDelegateObject *)delegateObject;

@end

在 C 中我调用:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    ControllerDelegateObject *object = [[ControllerDelegateObject alloc]init];
    object.model = indexPath.row;
    [delegate onResult:object];
    [ self.navigationController popViewControllerAnimated:YES ];
}

比我在 B 得到的:

-(void)onResult:(ControllerDelegateObject *)delegateObject{
    delegateObject.brand = self.chosenBrand;
    [delegate onResult:delegateObject];
    [ self.navigationController popViewControllerAnimated:YES ]; **//doesn't work**
     NSLog(@"TEST2");
}

为什么在委托(delegate)回调中没有第二次调用 [ self.navigationController popViewControllerAnimated:YES ]？

Answer 1

如果你想去A:

popToRootViewControllerAnimated:

如果你有超过 3 个 View Controller A->B->C->D 并且你想从 D 转到 B，则另一种选择。

- popToViewController:animated:

引用UINavigationController Class Reference