Swift 带容器视图的滚动视图不'；无法正确调整内容大小
我的视图层次结构是这样排列的：Swift 带容器视图的滚动视图不'；无法正确调整内容大小,swift,uiscrollview,uikit,Swift,Uiscrollview,Uikit,我的视图层次结构是这样排列的： main view ---- scroll view -------- label -------- label -------- text view -------- horizontal stack view -------- divider view (UIView) -------- label -------- container view (embeds a child view controller) func adjustContentSize(
main view
---- scroll view
-------- label
-------- label
-------- text view
-------- horizontal stack view
-------- divider view (UIView)
-------- label
-------- container view (embeds a child view controller)
func adjustContentSize() {
var contentRect: CGRect = .zero
for subview in self.scrollView.subviews {
contentRect = contentRect.union(subview.frame)
}
self.scrollView.contentSize = contentRect.size
}
main view
---- scroll view
-------- label
-------- label
-------- text view
-------- horizontal stack view
-------- divider view (UIView)
-------- label
-------- container view (embeds a child view controller)
func adjustContentSize() {
var contentRect: CGRect = .zero
for subview in self.scrollView.subviews {
contentRect = contentRect.union(subview.frame)
}
self.scrollView.contentSize = contentRect.size
}
但是内容大小仍然不正确：它完全等于窗口大小，即使它应该更大，以便为集合视图中的所有元素腾出位置。我认为问题主要是因为我嵌入了一个子视图控制器，因为通常滚动视图内容大小是自动调整的。但在这种情况下该怎么办呢？如何告诉滚动视图正确的内容大小？我不明白为什么不能为所有这些视图设置约束？我知道一个约束是两个视图之间的关系，但多个约束可以为所有这些视图建立关系 对于您的情况，在scrollview中有7个视图，您可以这样做
scrollview.top = view1.top
view2.top = view1.bottom
view3.top = view2.bottom
...
view7.bottom = scrollview.bottom
// don't forget to set this
scrollview.top = scrollviewParent.top
scrollview.bottom = scrollviewParent.bottom
scrollview.leading = scrollviewParent.leading
scrollview.trailing = scrollviewParent.trailing
因此，所有这些约束都应该起作用。在容器视图上设置约束与在任何其他视图上设置约束没有什么不同 这是您的布局，带有约束： 在运行时，它如下所示： 然后，滚动： 以下是所需的所有代码（集合视图使用水平流）： 以及故事板的源代码：
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14490.49"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--View Controller-->
<scene sceneID="tne-QT-ifu">
<objects>
<viewController id="BYZ-38-t0r" customClass="ViewController" customModule="Ramy" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
<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="jJS-Jp-5Wb">
<rect key="frame" x="8" y="28" width="359" height="631"/>
<subviews>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label 1" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="XwC-bl-fns">
<rect key="frame" x="153" y="8" width="53.5" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" 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="Label 2" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="VcB-Di-yle">
<rect key="frame" x="151.5" y="40.5" width="56" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="2P9-JD-ezE">
<rect key="frame" x="59.5" y="73" width="240" height="128"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<constraints>
<constraint firstAttribute="width" constant="240" id="RSb-O4-Jy1"/>
<constraint firstAttribute="height" constant="128" id="ZNr-Tq-dig"/>
</constraints>
<string key="text">Lorem ipsum dolor sit er elit lamet, consectetaur cillium adipisicing pecu, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Nam liber te conscient to factor tum poen legum odioque civiuda.</string>
<fontDescription key="fontDescription" type="system" pointSize="14"/>
<textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
</textView>
<stackView opaque="NO" contentMode="scaleToFill" distribution="fillEqually" spacing="8" translatesAutoresizingMaskIntoConstraints="NO" id="Urd-av-tKj">
<rect key="frame" x="54" y="213" width="251.5" height="20.5"/>
<subviews>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Horizontal" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="iJ9-BV-XXm">
<rect key="frame" x="0.0" y="0.0" width="78.5" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" 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="Stack" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="SlW-MH-lZj">
<rect key="frame" x="86.5" y="0.0" width="78.5" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" 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="View" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="usj-S2-wXe">
<rect key="frame" x="173" y="0.0" width="78.5" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
</stackView>
<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Ube-Ox-WG0" userLabel="Divider View">
<rect key="frame" x="29.5" y="253.5" width="300" height="4"/>
<color key="backgroundColor" red="1" green="0.14913141730000001" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="width" constant="300" id="3r0-U8-e4h"/>
<constraint firstAttribute="height" constant="4" id="8Zh-29-VuE"/>
</constraints>
</view>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label 3" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="t4g-6L-Fxz">
<rect key="frame" x="151.5" y="277.5" width="56.5" height="20.5"/>
<color key="backgroundColor" red="0.99806135890000003" green="0.96808904409999996" blue="0.12760734560000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<containerView opaque="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Ae9-nr-NPW">
<rect key="frame" x="12" y="310" width="335" height="500"/>
<color key="backgroundColor" red="0.16078431369999999" green="0.62352941179999999" blue="0.81960784310000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="500" id="Ugi-NN-btd"/>
</constraints>
<connections>
<segue destination="iKt-In-mH7" kind="embed" id="xc0-HZ-ykL"/>
</connections>
</containerView>
</subviews>
<color key="backgroundColor" red="0.99942404029999998" green="0.88699374509999995" blue="0.6455106089" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="Ae9-nr-NPW" firstAttribute="leading" secondItem="jJS-Jp-5Wb" secondAttribute="leading" constant="12" id="46G-Do-tx2"/>
<constraint firstItem="Ae9-nr-NPW" firstAttribute="width" secondItem="jJS-Jp-5Wb" secondAttribute="width" constant="-24" id="9Gx-Qt-KD7"/>
<constraint firstItem="VcB-Di-yle" firstAttribute="centerX" secondItem="2P9-JD-ezE" secondAttribute="centerX" id="AbA-b2-Dc2"/>
<constraint firstItem="Ube-Ox-WG0" firstAttribute="centerX" secondItem="t4g-6L-Fxz" secondAttribute="centerX" id="J1X-MF-qh8"/>
<constraint firstAttribute="bottom" secondItem="Ae9-nr-NPW" secondAttribute="bottom" constant="8" id="J4e-Iv-CbW"/>
<constraint firstItem="VcB-Di-yle" firstAttribute="top" secondItem="XwC-bl-fns" secondAttribute="bottom" constant="12" id="Lbs-Pa-kn0"/>
<constraint firstItem="Urd-av-tKj" firstAttribute="top" secondItem="2P9-JD-ezE" secondAttribute="bottom" constant="12" id="MnP-kq-VMd"/>
<constraint firstItem="Ube-Ox-WG0" firstAttribute="top" secondItem="Urd-av-tKj" secondAttribute="bottom" constant="20" id="Nzj-mz-NBe"/>
<constraint firstItem="2P9-JD-ezE" firstAttribute="top" secondItem="VcB-Di-yle" secondAttribute="bottom" constant="12" id="PV8-rx-82P"/>
<constraint firstItem="t4g-6L-Fxz" firstAttribute="centerX" secondItem="Ae9-nr-NPW" secondAttribute="centerX" id="R8B-Yu-eaX"/>
<constraint firstAttribute="trailing" secondItem="Ae9-nr-NPW" secondAttribute="trailing" constant="12" id="Vl6-pC-fR7"/>
<constraint firstItem="t4g-6L-Fxz" firstAttribute="top" secondItem="Ube-Ox-WG0" secondAttribute="bottom" constant="20" id="dzM-uC-vDg"/>
<constraint firstItem="2P9-JD-ezE" firstAttribute="centerX" secondItem="Urd-av-tKj" secondAttribute="centerX" id="gIG-Ln-0ci"/>
<constraint firstItem="XwC-bl-fns" firstAttribute="top" secondItem="jJS-Jp-5Wb" secondAttribute="top" constant="8" id="h2g-bu-iYg"/>
<constraint firstItem="Ae9-nr-NPW" firstAttribute="top" secondItem="t4g-6L-Fxz" secondAttribute="bottom" constant="12" id="k5A-Ht-wuD"/>
<constraint firstItem="XwC-bl-fns" firstAttribute="centerX" secondItem="VcB-Di-yle" secondAttribute="centerX" id="s7H-0G-55o"/>
<constraint firstItem="Urd-av-tKj" firstAttribute="centerX" secondItem="Ube-Ox-WG0" secondAttribute="centerX" id="wIn-jA-Hwn"/>
</constraints>
</scrollView>
</subviews>
<color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="jJS-Jp-5Wb" firstAttribute="top" secondItem="6Tk-OE-BBY" secondAttribute="top" constant="8" id="HZI-i3-eQL"/>
<constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="jJS-Jp-5Wb" secondAttribute="trailing" constant="8" id="TrF-oh-lbk"/>
<constraint firstItem="6Tk-OE-BBY" firstAttribute="bottom" secondItem="jJS-Jp-5Wb" secondAttribute="bottom" constant="8" id="gCW-Kv-Vma"/>
<constraint firstItem="jJS-Jp-5Wb" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="8" id="mdg-vi-3RB"/>
</constraints>
<viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="138.40000000000001" y="138.98050974512745"/>
</scene>
<!--Embedded Collection View Controller-->
<scene sceneID="8Wg-59-nK4">
<objects>
<collectionViewController id="iKt-In-mH7" customClass="EmbeddedCollectionViewController" customModule="Ramy" customModuleProvider="target" sceneMemberID="viewController">
<collectionView key="view" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" dataMode="prototypes" id="pbM-fa-YQc">
<rect key="frame" x="0.0" y="0.0" width="335" height="500"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<collectionViewFlowLayout key="collectionViewLayout" scrollDirection="horizontal" minimumLineSpacing="10" minimumInteritemSpacing="10" id="Sd4-5y-JzD">
<size key="itemSize" width="50" height="50"/>
<size key="headerReferenceSize" width="0.0" height="0.0"/>
<size key="footerReferenceSize" width="0.0" height="0.0"/>
<inset key="sectionInset" minX="0.0" minY="0.0" maxX="0.0" maxY="0.0"/>
</collectionViewFlowLayout>
<cells>
<collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" misplaced="YES" id="UTC-Yv-lrd">
<rect key="frame" x="0.0" y="0.0" width="50" height="50"/>
<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
<view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO">
<rect key="frame" x="0.0" y="0.0" width="50" height="50"/>
<autoresizingMask key="autoresizingMask"/>
</view>
</collectionViewCell>
</cells>
<connections>
<outlet property="dataSource" destination="iKt-In-mH7" id="KsO-Bh-EEm"/>
<outlet property="delegate" destination="iKt-In-mH7" id="IOW-gi-oV8"/>
</connections>
</collectionView>
</collectionViewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="PLD-Y7-bEq" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="888.79999999999995" y="312.14392803598201"/>
</scene>
</scenes>
</document>
同侧叶是一种最优秀的植物，纤毛是一种最优秀的植物，它在劳动和生活中起着暂时的作用。但是，在最低限度上，我们需要一个实验室来进行日常工作。两人或两人在一个无教区的房间里互相指责。除偶尔因疏忽而死亡外，不得因疏忽而导致动物死亡。Nam liber te良心不安，认为这是一项法律。
override func viewDidLoad() {
super.viewDidLoad()
self.collectioView.reloadData()
self.collectioView.performBatchUpdates(nil, completion: {
(result) in
if self.compltion != nil {
self.compltion!(self.collectioView.contentSize.height)
}
})
// Do any additional setup after loading the view.
}