pop回指定控制器

//OC
NSArray *array = [NSMutableArray new];
array = self.navigationController.viewControllers;

//1、返回指定index的控制器
UIViewController *viewC = [array objectAtIndex:0];
[self.navigationController popToViewController:viewC animated:YES];

//2、
UIViewController *viewc = [UIViewController new];
for (viewc in  array) {
   if ([viewc isKindOfClass:[指定控制器 class]]) {
       [self.navigationController popToViewController:viewcanimated:YES];
   }
}

//3、

　[vcArr removeObject:strongSelf];

[self.navigationController setViewControllers:vcArr animated:NO];

2、Swift

//返回指定界面
let marr = NSMutableArray.init(array:(self.navigationController?.viewControllers)!)
for i in 0..<marr.count {
     let vc = marr[i] as! UIViewController
     let vcName = type(of: vc)
     let PurposeVCName = type(of: 指定控制器名称())
     if "\(PurposeVCName)" == "\(vcName)" {
          self.navigationController?.popToViewController(vc, animated: true)
     }
}

let marr = NSMutableArray.init(array:(self.navigationController?.viewControllers)!)
for i in 0..<marr.count {
    let vc = marr[i] as! UIViewController
    let vcName = type(of: vc)
    let PurposeName = type(of: 指定控制器的后一个控制器名称())
    if "\(PurposeName)" == "\(vcName)" {
       let popVC = self.navigationController?.viewControllers[i-1]
       self.navigationController?.popToViewController(popVC!, animated: true)
    }
}

//将本控制器从导航栏控制器数组中移除，从而返回到跳转到本控制器的控制器
let marr = NSMutableArray.init(array(self.navigationController?.viewControllers)!)
let removeArr = NSMutableArray()
for i in 0..<marr.count {
    let vc = marr[i] as! UIViewController
    let vcName = type(of: vc)
    let selfName = type(of: self)
    if "\(selfName)" == "\(vcName)" {
       removeArr.add(vc)
    }
}

if removeArr.count > 0 {
   for i in 0..<removeArr.count {
        let vc = removeArr[i] as! UIViewController
        marr.remove(vc)
   }
}
let array : NSArray = marr
self.navigationController?.viewControllers = array as! [UIViewController]