我的主视图控制器A呈现视图控制器B，然后视图控制器B将视图控制器C推到其（B＆＃39; s）导航堆栈上。现在，从C开始，我希望能够直接进入A.如果我从C运行dismissViewController，动画不顺畅，如果我将C弹出到B然后解除B，则有两个独立/不同的动画，我不想要。
在没有中间过渡的情况下，我有没有办法直接从C到A？
因此，运行以下（从C开始）显示突然转换
[self dismissViewControllerAnimated:YES completion:nil];
而运行以下（从C）显示两个单独的转换...
UIViewController *previousViewController = [self.navigationController.viewControllers
objectAtIndex:(self.navigationController.viewControllers.count - 2)];
[self.navigationController popViewControllerAnimated:YES];
[previousViewController dismissViewControllerAnimated:YES completion:nil];
答案 0 :(得分：2)
使用popToViewController:animated:
[self.navigationController popToViewController: self.navigationController.viewControllers.firstObject animated: YES];
或者，使用setViewControllers:animated:
NSMutableArray* viewControllers = [self.navigationController.viewControllers mutableCopy];
[viewControllers removeLastObject];
[viewControllers removeLastObject];
[self.navigationController setViewControllers: viewControllers animated: YES];
答案 1 :(得分：2)
如果您的主控制器是您的根控制器，您可以使用
[self.navigationController popToRootViewControllerAnimated:YES];
答案 2 :(得分：0)
为此创建了一个演示，“如果我从C运行dismissViewController，动画就不顺畅”，发现动画很流畅。
视图控制器（Swift）
class ViewController: UIViewController {
@IBAction func dismissAction(_ sender:UIBarButtonItem) {
if let presentingViewController = navigationController?.presentingViewController as? ViewController {
presentingViewController.dismiss(animated: true, completion: nil)
}
}
}
故事板（源代码）
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11542" systemVersion="16B2555" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="oLA-Di-cgf">
<device id="retina3_5" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11524"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--View Controller-->
<scene sceneID="n0L-NI-h0u">
<objects>
<viewController id="oLA-Di-cgf" customClass="ViewController" customModule="test" customModuleProvider="target" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="r6P-JA-nnH"/>
<viewControllerLayoutGuide type="bottom" id="ahY-rd-YdT"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="85O-5M-YL1">
<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<toolbar opaque="NO" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="O7h-fZ-9h7">
<rect key="frame" x="0.0" y="436" width="320" height="44"/>
<items>
<barButtonItem title="Present" id="maa-Qr-JCa">
<connections>
<segue destination="Wca-5m-4jx" kind="presentation" id="CMi-Rw-iRx"/>
</connections>
</barButtonItem>
</items>
</toolbar>
</subviews>
<color key="backgroundColor" red="0.41568627450000001" green="0.77647058820000003" blue="0.62745098040000002" alpha="1" colorSpace="calibratedRGB"/>
<constraints>
<constraint firstItem="ahY-rd-YdT" firstAttribute="top" secondItem="O7h-fZ-9h7" secondAttribute="bottom" id="081-86-3ey"/>
<constraint firstItem="O7h-fZ-9h7" firstAttribute="leading" secondItem="85O-5M-YL1" secondAttribute="leading" id="Gxg-mQ-PmM"/>
<constraint firstAttribute="trailing" secondItem="O7h-fZ-9h7" secondAttribute="trailing" id="oeG-uG-4Z5"/>
</constraints>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="gfv-GB-jC7" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="3872" y="-131"/>
</scene>
<!--Navigation Controller-->
<scene sceneID="P5w-Qq-Qnr">
<objects>
<navigationController id="Wca-5m-4jx" sceneMemberID="viewController">
<navigationBar key="navigationBar" contentMode="scaleToFill" id="gc0-XE-nSj">
<rect key="frame" x="0.0" y="0.0" width="375" height="44"/>
<autoresizingMask key="autoresizingMask"/>
</navigationBar>
<connections>
<segue destination="pdW-3L-D3v" kind="relationship" relationship="rootViewController" id="Cmi-b2-qJ7"/>
</connections>
</navigationController>
<placeholder placeholderIdentifier="IBFirstResponder" id="8Iw-y7-6CL" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="4654" y="-131"/>
</scene>
<!--View Controller-->
<scene sceneID="yLb-Gh-kwS">
<objects>
<viewController id="pdW-3L-D3v" customClass="ViewController" customModule="test" customModuleProvider="target" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="6r9-si-Z7k"/>
<viewControllerLayoutGuide type="bottom" id="gn1-Ij-96t"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="GHL-CQ-FOp">
<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" red="1" green="0.40000000600000002" blue="0.40000000600000002" alpha="1" colorSpace="calibratedRGB"/>
</view>
<navigationItem key="navigationItem" id="xWV-p6-Kxr">
<barButtonItem key="rightBarButtonItem" title="Dismiss" id="YEp-mM-R0q">
<connections>
<action selector="dismissAction:" destination="pdW-3L-D3v" id="uIX-Ji-H2L"/>
</connections>
</barButtonItem>
</navigationItem>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="KGz-ra-8TI" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="5458" y="-131"/>
</scene>
</scenes>
</document>