我在使用两个滚动视图的屏幕上工作（如下所示）。垂直滚动视图是基础视图，其中包含所有内容的另一个视图。在这个视图中有另一个水平移动的滚动视图。
因此，作为参考：
滚动视图（垂直）->视图->滚动视图（水平）
另一个需要指出的是第一个滚动视图中的内在文本视图，它从后端提取数据。
我面临的问题是：垂直滚动视图允许您上下移动，但它会根据设置的高度停止。所以，如果我把高度设为1000，它会到达那个点，但怎么也不会走得更远。如果描述比这个长，它就会被切断
1）如何调整scrollview（垂直视图），以便他滚动到需要的位置，以便显示整个描述文本？基本上，如何根据textview的高度调整scrollview的高度。
我面临的第二个问题是垂直滚动视图可以工作，但水平滚动视图不行。我在许多其他应用程序中使用过这种水平滚动视图，它们具有相同的约束（如下所示），但从未在垂直滚动视图中使用过。既然它在那里，它就不能工作，而其他的工作，反之亦然。所以，
2）如何正确地约束两个滚动视图，使它们协同工作？垂直滚动视图应该上下滚动，每当我在水平滚动视图上向左或向右滑动时，它也应该正确移动。
最佳答案
在垂直滚动视图中嵌入水平滚动视图是很常见的—您只需要正确设置约束。
另外，使用适当的约束，很容易让scroll视图的内容控制可滚动区域——而不必计算并显式设置.contentSize。
这是布局图。主视图背景为粉红色；垂直滚动视图为黄色；水平滚动视图为绿色：
垂直滚动视图在所有4条边上都被约束为0，并且它与主视图的宽度和高度相等。
水平滚动视图的前导、顶部和尾部约束为0（无底部约束），高度约束为390，其宽度与主视图的宽度相等。
图像视图被限制为以W/H为10的方式引导40。
标题标签被约束到图像视图。
描述标签（行数=0）被限制为指向图像视图，宽度等于垂直滚动视图-20（左侧10，右侧10）。它被限制在底部。当您向标签添加文本并且其高度增加时，将自动增加垂直滚动视图可滚动区域（其0）的高度。
以下是滚动前后的结果：
为了清楚起见，使用调试视图层次结构时的外观：
为了帮助您正确地设置它，这里是controller类（不需要调整代码，它所做的只是向标签添加文本）：
class EmbeddedScrollViewController: UIViewController {
@IBOutlet var descriptionLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// 20 lines of text
descriptionLabel.text = (1...20).map({ "Line \($0)" }).joined(separator: "\n")
}
}
故事板来源：
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14109" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="1GW-r8-dyB">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Embedded Scroll View Controller-->
<scene sceneID="EkT-c0-tFZ">
<objects>
<viewController id="1GW-r8-dyB" customClass="EmbeddedScrollViewController" customModule="SW4Temp" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="Mgr-6N-2U6">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<scrollView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="K2x-mz-KcZ" userLabel="V-Scroll">
<rect key="frame" x="0.0" y="20" width="375" height="647"/>
<subviews>
<scrollView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Dcg-9m-tlK" userLabel="H-Scroll">
<rect key="frame" x="0.0" y="0.0" width="375" height="390"/>
<subviews>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Upper Left" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="unz-8T-JcR">
<rect key="frame" x="20" y="20" width="82" height="21"/>
<color key="backgroundColor" red="0.45138680930000002" green="0.99309605359999997" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Lower Right" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Cdr-yN-9YB">
<rect key="frame" x="500" y="330" width="90.5" height="21"/>
<color key="backgroundColor" red="0.45138680930000002" green="0.99309605359999997" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="qsY-aV-AFa" userLabel="InfoLabel">
<rect key="frame" x="20" y="281" width="320" height="41"/>
<color key="backgroundColor" red="0.45138680930000002" green="0.99309605359999997" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="width" constant="320" id="g2L-p3-Nt5"/>
</constraints>
<string key="text">To demonstrate Horizontal scrolling,
There is Another Label to the Right ---></string>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<color key="backgroundColor" red="0.45009386540000001" green="0.98132258650000004" blue="0.4743030667" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="390" id="2ln-JF-25C"/>
<constraint firstAttribute="bottom" secondItem="Cdr-yN-9YB" secondAttribute="bottom" constant="20" id="C6t-Uu-DXN"/>
<constraint firstItem="Cdr-yN-9YB" firstAttribute="top" secondItem="qsY-aV-AFa" secondAttribute="bottom" constant="8" id="GfU-jw-KzP"/>
<constraint firstItem="Cdr-yN-9YB" firstAttribute="leading" secondItem="qsY-aV-AFa" secondAttribute="trailing" constant="160" id="Q4e-Fl-IEg"/>
<constraint firstAttribute="trailing" secondItem="Cdr-yN-9YB" secondAttribute="trailing" constant="20" id="X5C-nj-47A"/>
<constraint firstItem="unz-8T-JcR" firstAttribute="leading" secondItem="Dcg-9m-tlK" secondAttribute="leading" constant="20" id="cVG-kM-8ZI"/>
<constraint firstItem="qsY-aV-AFa" firstAttribute="leading" secondItem="unz-8T-JcR" secondAttribute="leading" id="pPP-Ko-du2"/>
<constraint firstItem="qsY-aV-AFa" firstAttribute="top" secondItem="unz-8T-JcR" secondAttribute="bottom" constant="240" id="tMx-HW-l2L"/>
<constraint firstItem="unz-8T-JcR" firstAttribute="top" secondItem="Dcg-9m-tlK" secondAttribute="top" constant="20" id="ybo-xk-6LG"/>
</constraints>
</scrollView>
<pageControl opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" numberOfPages="3" translatesAutoresizingMaskIntoConstraints="NO" id="B7V-nL-rCv">
<rect key="frame" x="121.5" y="353" width="132" height="37"/>
<color key="backgroundColor" red="0.4756349325" green="0.47564673419999998" blue="0.47564041610000002" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="width" constant="132" id="2ge-VP-yzz"/>
</constraints>
</pageControl>
<imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="3cl-Ou-kTu">
<rect key="frame" x="10" y="405" width="40" height="40"/>
<color key="backgroundColor" red="0.0" green="0.58980089430000004" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="width" constant="40" id="E0D-Ed-vVX"/>
<constraint firstAttribute="height" constant="40" id="MFN-Ap-lkV"/>
</constraints>
</imageView>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="This Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="1Sf-bC-0yM">
<rect key="frame" x="58" y="415" width="70" height="21"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Description Label" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="MkP-AG-X03">
<rect key="frame" x="10" y="461" width="355" height="20.5"/>
<color key="backgroundColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<color key="backgroundColor" red="0.99953407049999998" green="0.98835557699999999" blue="0.47265523669999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="bottom" secondItem="MkP-AG-X03" secondAttribute="bottom" constant="8" id="62d-uw-l6l"/>
<constraint firstItem="B7V-nL-rCv" firstAttribute="centerX" secondItem="Dcg-9m-tlK" secondAttribute="centerX" id="6TH-qD-Rpg"/>
<constraint firstItem="Dcg-9m-tlK" firstAttribute="leading" secondItem="K2x-mz-KcZ" secondAttribute="leading" id="8Cm-Zq-jKu"/>
<constraint firstItem="1Sf-bC-0yM" firstAttribute="centerY" secondItem="3cl-Ou-kTu" secondAttribute="centerY" id="D54-Jk-1zW"/>
<constraint firstItem="MkP-AG-X03" firstAttribute="width" secondItem="K2x-mz-KcZ" secondAttribute="width" constant="-20" id="Sk8-fq-0I8"/>
<constraint firstItem="3cl-Ou-kTu" firstAttribute="top" secondItem="Dcg-9m-tlK" secondAttribute="bottom" constant="15" id="XN2-Lz-nQQ"/>
<constraint firstAttribute="trailing" secondItem="Dcg-9m-tlK" secondAttribute="trailing" id="YtO-y4-qn9"/>
<constraint firstItem="MkP-AG-X03" firstAttribute="leading" secondItem="3cl-Ou-kTu" secondAttribute="leading" id="ZM0-3U-XLQ"/>
<constraint firstItem="Dcg-9m-tlK" firstAttribute="top" secondItem="K2x-mz-KcZ" secondAttribute="top" id="fxa-1i-NHa"/>
<constraint firstItem="Dcg-9m-tlK" firstAttribute="width" secondItem="K2x-mz-KcZ" secondAttribute="width" id="l7O-qV-Ja9"/>
<constraint firstItem="3cl-Ou-kTu" firstAttribute="leading" secondItem="K2x-mz-KcZ" secondAttribute="leading" constant="10" id="on9-FW-ZiG"/>
<constraint firstItem="B7V-nL-rCv" firstAttribute="bottom" secondItem="Dcg-9m-tlK" secondAttribute="bottom" id="tbv-ao-adS"/>
<constraint firstItem="1Sf-bC-0yM" firstAttribute="leading" secondItem="3cl-Ou-kTu" secondAttribute="trailing" constant="8" id="wuV-fj-HFV"/>
<constraint firstItem="MkP-AG-X03" firstAttribute="top" secondItem="3cl-Ou-kTu" secondAttribute="bottom" constant="16" id="x4z-IQ-o2z"/>
</constraints>
</scrollView>
</subviews>
<color key="backgroundColor" red="1" green="0.1857388616" blue="0.57339501380000002" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="MMC-8B-qcF" firstAttribute="trailing" secondItem="K2x-mz-KcZ" secondAttribute="trailing" id="3S9-mL-Ldn"/>
<constraint firstItem="MMC-8B-qcF" firstAttribute="bottom" secondItem="K2x-mz-KcZ" secondAttribute="bottom" id="7g2-ph-w0I"/>
<constraint firstItem="K2x-mz-KcZ" firstAttribute="top" secondItem="MMC-8B-qcF" secondAttribute="top" id="PIT-lg-Z3r"/>
<constraint firstItem="K2x-mz-KcZ" firstAttribute="leading" secondItem="MMC-8B-qcF" secondAttribute="leading" id="irI-yU-v4c"/>
</constraints>
<viewLayoutGuide key="safeArea" id="MMC-8B-qcF"/>
</view>
<connections>
<outlet property="descriptionLabel" destination="MkP-AG-X03" id="4xr-iw-3tF"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="gbQ-wO-etq" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="41" y="2257"/>
</scene>
</scenes>
</document>
关于ios - 如何同时使用水平和垂直 ScrollView (快速)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/53504212/