Question

我正在使用两个滚动视图的屏幕（如下所示）上工作。 “垂直”滚动视图是基础，并且在其中包含所有内容的另一个视图。在该视图中，还有一个水平移动的滚动视图。

因此供参考：滚动视图（垂直）->视图->滚动视图（水平）

需要指出的另一件事是第一个滚动视图中的固有文本视图，该文本视图从后端提取数据。

我面临的问题是：垂直滚动视图允许您上下移动，但无论设置了什么高度，它都会停止。因此，如果我将高度设置为1000，它将达到该点，但是不会再进一步了。如果描述长于此，则会被剪掉

1）我如何调整滚动视图（垂直），以便他滚动到需要的程度才能显示整个说明文字？基本上，如何根据文本视图的高度调整滚动视图的高度。

Im面临的第二个问题是垂直滚动视图有效，而水平滚动视图无效。我在具有相同约束条件的许多其他应用程序中使用了此水平滚动视图（如下所示），但从未在垂直滚动视图中使用它。现在它在那里了，而其他都不能用了，反之亦然。所以，

2）如何正确限制两个滚动视图以使其一致工作？垂直滚动视图应上下滚动，每当我在水平滚动视图上向左或向右滑动时，也应该正确移动。

Answer 1

我将使用CollectionView或tableView，然后将CollectionView放入要水平滚动的单元格中。

您可以通过其他方式调整包含textview的单元格的大小

Answer 2

在水平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即可。

此外，使用适当的约束，很容易让滚动视图的 content 控制可滚动区域-无需计算并显式设置.contentSize。

这是布局。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四个侧面上均被限制为0，和被限制为 Equal Width and Height 主视图。

水平滚动视图受0约束，用于开头，顶部和结尾（无底部约束），高度约束为390，和限制为 Equal Width （主视图）。

图像视图的前导10约束，W / H为40。

“标题”标签仅限于图像视图。

“描述标签”（行数= 0）受约束，导致进入图像视图，宽度等于垂直滚动视图-20（左侧为10，右边的10）。并且在底部受0的约束。当您向标签中添加文本并且其高度增加时，这将自动增加垂直滚动视图的可滚动区域（其.contentSize）的高度。

以下是滚动前后的结果：

为清楚起见，它使用“调试视图层次结构”的外观：

为帮助您正确设置它，以下是控制器类（无需上浆代码-它所做的就是在标签上添加文本）：

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")

    }
}

和情节提要源：

<?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 ---&gt;</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>

Answer 3

不要使用两个滚动视图并被手势处理淹没，尝试使用一个滚动视图并将 isDirectionLockEnabled 属性设置为 false，这将启用双向滚动，您可以使用堆栈视图或管理内容使用内容大小属性并正确放置子视图。

如何同时使用水平和垂直滚动视图（快速）

3 个答案: