在 UIScrollView 中自动调整 UITextView 的大小
Auto-Resizing UITextView in UIScrollView
我正在设置一个显示一些内容的滚动视图。我试图弄清楚如何根据文本视图中的文本量更改滚动视图大小（当然还要更改文本视图高度，但保持宽度不变）。我正在为滚动视图使用故事板。视图控制器内部是滚动视图，它包含一个容器视图（这是保存文本视图的地方）。我正在谈论的文本视图在内容描述的下方。我尝试了多种不同的方法，但没有找到有效的方法。任何帮助将不胜感激。谢谢！ （同样值得注意的是，我使用 DeckTransition 库展示了这个视图控制器）
我的Xcode故事板https://imgur.com/OFrKRSk
目前在模拟器中的表现如何 https://imgur.com/iq73Jn0
如果将 scrollEnabled 设置为 false，文本视图将适合其内容。如果它不起作用，您应该检查您的约束。例如内容拥抱优先，抗压缩优先。确保文本视图缩小到小于内部内容大小。
这是一个可以尝试的基本示例。点击 "Change Text" 按钮将在文本视图中的短文本、中文本和长文本之间切换，给出以下结果：
这是所有需要的代码（它所做的只是更改文本 - 没有别的）：
import UIKit
class TextViewinScrollViewController: UIViewController {
@IBOutlet var theTextView: UITextView!
var i = 0
var strings = [
"This is a Short amount of text.",
"This is a Medium amount of text. 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.",
"This is a Long amount of 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.",
]
override func viewDidLoad() {
super.viewDidLoad()
theTextView.text = strings[i]
}
@IBAction func didTap(_ sender: Any) {
i += 1
if i >= strings.count {
i = 0
}
theTextView.text = strings[i]
}
}
这是故事板：
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="HAr-gQ-Ow4">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Text Viewin Scroll View Controller-->
<scene sceneID="0zs-mA-Zcw">
<objects>
<viewController id="HAr-gQ-Ow4" customClass="TextViewinScrollViewController" customModule="XC10SWScratch" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="oNR-og-qiK">
<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="XBn-Je-V51">
<rect key="frame" x="40" y="60" width="295" height="567"/>
<subviews>
<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="oNQ-i1-b49" userLabel="Container">
<rect key="frame" x="0.0" y="0.0" width="295" height="675.5"/>
<subviews>
<imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="VAf-T0-cKT">
<rect key="frame" x="0.0" y="0.0" width="295" height="240"/>
<color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<constraints>
<constraint firstAttribute="height" constant="240" id="NzL-9L-Ybs"/>
</constraints>
</imageView>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="K3u-yi-BbX">
<rect key="frame" x="51.5" y="252" width="192" height="26"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<inset key="contentEdgeInsets" minX="10" minY="4" maxX="10" maxY="4"/>
<state key="normal" title="Change Text in Text View"/>
<connections>
<action selector="didTap:" destination="HAr-gQ-Ow4" eventType="touchUpInside" id="dnw-ff-qw3"/>
</connections>
</button>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Content Description" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="gXD-0q-Avm">
<rect key="frame" x="8" y="290" width="153.5" height="20.5"/>
<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>
<textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" scrollEnabled="NO" editable="NO" text="This is the Text View" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="Mwg-70-9L2">
<rect key="frame" x="20" y="322.5" width="255" height="33"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<fontDescription key="fontDescription" type="system" pointSize="14"/>
<textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
</textView>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="1ox-xZ-Teo" userLabel="Example View">
<rect key="frame" x="20" y="367.5" width="255" height="300"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="300" id="hXk-ck-CvF"/>
</constraints>
<string key="text">Example View
(300-pts Height)</string>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<color key="backgroundColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="gXD-0q-Avm" firstAttribute="top" secondItem="K3u-yi-BbX" secondAttribute="bottom" constant="12" id="7gX-pC-zmh"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="width" secondItem="oNQ-i1-b49" secondAttribute="width" constant="-40" id="9pZ-ja-g7R"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="Byo-5N-WXf"/>
<constraint firstAttribute="trailing" secondItem="VAf-T0-cKT" secondAttribute="trailing" id="FyF-by-edM"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="width" secondItem="Mwg-70-9L2" secondAttribute="width" id="Lic-3Q-vWZ"/>
<constraint firstAttribute="bottom" secondItem="1ox-xZ-Teo" secondAttribute="bottom" constant="8" id="MQK-MS-dCA"/>
<constraint firstItem="K3u-yi-BbX" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="UPN-FD-gxb"/>
<constraint firstItem="K3u-yi-BbX" firstAttribute="top" secondItem="VAf-T0-cKT" secondAttribute="bottom" constant="12" id="WMi-Vl-xBu"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="dno-nR-zvQ"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="top" secondItem="gXD-0q-Avm" secondAttribute="bottom" constant="12" id="fDe-GP-gs4"/>
<constraint firstItem="VAf-T0-cKT" firstAttribute="top" secondItem="oNQ-i1-b49" secondAttribute="top" id="hRj-XY-fnb"/>
<constraint firstItem="gXD-0q-Avm" firstAttribute="leading" secondItem="oNQ-i1-b49" secondAttribute="leading" constant="8" id="ks5-IH-yrt"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="top" secondItem="Mwg-70-9L2" secondAttribute="bottom" constant="12" id="lYY-L9-pb6"/>
<constraint firstItem="VAf-T0-cKT" firstAttribute="leading" secondItem="oNQ-i1-b49" secondAttribute="leading" id="urO-i9-GQ7"/>
</constraints>
</view>
</subviews>
<color key="backgroundColor" red="0.46202266219999999" green="0.83828371759999998" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="oNQ-i1-b49" firstAttribute="top" secondItem="XBn-Je-V51" secondAttribute="top" id="FGL-wN-OHg"/>
<constraint firstItem="oNQ-i1-b49" firstAttribute="leading" secondItem="XBn-Je-V51" secondAttribute="leading" id="f4T-Mh-ZdB"/>
<constraint firstAttribute="bottom" secondItem="oNQ-i1-b49" secondAttribute="bottom" id="qwX-hf-UtO"/>
<constraint firstAttribute="trailing" secondItem="oNQ-i1-b49" secondAttribute="trailing" id="tdW-x1-DtX"/>
<constraint firstItem="oNQ-i1-b49" firstAttribute="width" secondItem="XBn-Je-V51" secondAttribute="width" id="urs-jZ-3Hi"/>
</constraints>
</scrollView>
</subviews>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<constraints>
<constraint firstItem="VsF-QR-ZgP" firstAttribute="trailing" secondItem="XBn-Je-V51" secondAttribute="trailing" constant="40" id="bww-Xy-uZ6"/>
<constraint firstItem="XBn-Je-V51" firstAttribute="top" secondItem="VsF-QR-ZgP" secondAttribute="top" constant="40" id="dP4-Ax-cgr"/>
<constraint firstItem="XBn-Je-V51" firstAttribute="leading" secondItem="VsF-QR-ZgP" secondAttribute="leading" constant="40" id="eof-fi-9Ml"/>
<constraint firstItem="VsF-QR-ZgP" firstAttribute="bottom" secondItem="XBn-Je-V51" secondAttribute="bottom" constant="40" id="euP-M7-rBT"/>
</constraints>
<viewLayoutGuide key="safeArea" id="VsF-QR-ZgP"/>
</view>
<connections>
<outlet property="theTextView" destination="Mwg-70-9L2" id="IWV-hn-TRM"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="q25-D5-Cge" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="-114.40000000000001" y="58.920539730134934"/>
</scene>
</scenes>
</document>
好的，事实证明我有一些限制不允许文本视图正确调整大小。我禁用了文本视图上的滚动，删除了滚动视图和内容视图上的高度限制，现在一切似乎都正常了。我感谢所有的建议！你们帮了大忙！
我正在设置一个显示一些内容的滚动视图。我试图弄清楚如何根据文本视图中的文本量更改滚动视图大小（当然还要更改文本视图高度，但保持宽度不变）。我正在为滚动视图使用故事板。视图控制器内部是滚动视图，它包含一个容器视图（这是保存文本视图的地方）。我正在谈论的文本视图在内容描述的下方。我尝试了多种不同的方法，但没有找到有效的方法。任何帮助将不胜感激。谢谢！ （同样值得注意的是，我使用 DeckTransition 库展示了这个视图控制器）
我的Xcode故事板https://imgur.com/OFrKRSk 目前在模拟器中的表现如何 https://imgur.com/iq73Jn0
如果将 scrollEnabled 设置为 false，文本视图将适合其内容。如果它不起作用，您应该检查您的约束。例如内容拥抱优先，抗压缩优先。确保文本视图缩小到小于内部内容大小。
这是一个可以尝试的基本示例。点击 "Change Text" 按钮将在文本视图中的短文本、中文本和长文本之间切换，给出以下结果：
这是所有需要的代码（它所做的只是更改文本 - 没有别的）：
import UIKit
class TextViewinScrollViewController: UIViewController {
@IBOutlet var theTextView: UITextView!
var i = 0
var strings = [
"This is a Short amount of text.",
"This is a Medium amount of text. 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.",
"This is a Long amount of 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.",
]
override func viewDidLoad() {
super.viewDidLoad()
theTextView.text = strings[i]
}
@IBAction func didTap(_ sender: Any) {
i += 1
if i >= strings.count {
i = 0
}
theTextView.text = strings[i]
}
}
这是故事板：
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="HAr-gQ-Ow4">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Text Viewin Scroll View Controller-->
<scene sceneID="0zs-mA-Zcw">
<objects>
<viewController id="HAr-gQ-Ow4" customClass="TextViewinScrollViewController" customModule="XC10SWScratch" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="oNR-og-qiK">
<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="XBn-Je-V51">
<rect key="frame" x="40" y="60" width="295" height="567"/>
<subviews>
<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="oNQ-i1-b49" userLabel="Container">
<rect key="frame" x="0.0" y="0.0" width="295" height="675.5"/>
<subviews>
<imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="VAf-T0-cKT">
<rect key="frame" x="0.0" y="0.0" width="295" height="240"/>
<color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<constraints>
<constraint firstAttribute="height" constant="240" id="NzL-9L-Ybs"/>
</constraints>
</imageView>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="K3u-yi-BbX">
<rect key="frame" x="51.5" y="252" width="192" height="26"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<inset key="contentEdgeInsets" minX="10" minY="4" maxX="10" maxY="4"/>
<state key="normal" title="Change Text in Text View"/>
<connections>
<action selector="didTap:" destination="HAr-gQ-Ow4" eventType="touchUpInside" id="dnw-ff-qw3"/>
</connections>
</button>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Content Description" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="gXD-0q-Avm">
<rect key="frame" x="8" y="290" width="153.5" height="20.5"/>
<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>
<textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" scrollEnabled="NO" editable="NO" text="This is the Text View" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="Mwg-70-9L2">
<rect key="frame" x="20" y="322.5" width="255" height="33"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<fontDescription key="fontDescription" type="system" pointSize="14"/>
<textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
</textView>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" textAlignment="center" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="1ox-xZ-Teo" userLabel="Example View">
<rect key="frame" x="20" y="367.5" width="255" height="300"/>
<color key="backgroundColor" red="0.92143100499999997" green="0.92145264149999995" blue="0.92144101860000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="300" id="hXk-ck-CvF"/>
</constraints>
<string key="text">Example View
(300-pts Height)</string>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<color key="backgroundColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="gXD-0q-Avm" firstAttribute="top" secondItem="K3u-yi-BbX" secondAttribute="bottom" constant="12" id="7gX-pC-zmh"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="width" secondItem="oNQ-i1-b49" secondAttribute="width" constant="-40" id="9pZ-ja-g7R"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="Byo-5N-WXf"/>
<constraint firstAttribute="trailing" secondItem="VAf-T0-cKT" secondAttribute="trailing" id="FyF-by-edM"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="width" secondItem="Mwg-70-9L2" secondAttribute="width" id="Lic-3Q-vWZ"/>
<constraint firstAttribute="bottom" secondItem="1ox-xZ-Teo" secondAttribute="bottom" constant="8" id="MQK-MS-dCA"/>
<constraint firstItem="K3u-yi-BbX" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="UPN-FD-gxb"/>
<constraint firstItem="K3u-yi-BbX" firstAttribute="top" secondItem="VAf-T0-cKT" secondAttribute="bottom" constant="12" id="WMi-Vl-xBu"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="centerX" secondItem="oNQ-i1-b49" secondAttribute="centerX" id="dno-nR-zvQ"/>
<constraint firstItem="Mwg-70-9L2" firstAttribute="top" secondItem="gXD-0q-Avm" secondAttribute="bottom" constant="12" id="fDe-GP-gs4"/>
<constraint firstItem="VAf-T0-cKT" firstAttribute="top" secondItem="oNQ-i1-b49" secondAttribute="top" id="hRj-XY-fnb"/>
<constraint firstItem="gXD-0q-Avm" firstAttribute="leading" secondItem="oNQ-i1-b49" secondAttribute="leading" constant="8" id="ks5-IH-yrt"/>
<constraint firstItem="1ox-xZ-Teo" firstAttribute="top" secondItem="Mwg-70-9L2" secondAttribute="bottom" constant="12" id="lYY-L9-pb6"/>
<constraint firstItem="VAf-T0-cKT" firstAttribute="leading" secondItem="oNQ-i1-b49" secondAttribute="leading" id="urO-i9-GQ7"/>
</constraints>
</view>
</subviews>
<color key="backgroundColor" red="0.46202266219999999" green="0.83828371759999998" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="oNQ-i1-b49" firstAttribute="top" secondItem="XBn-Je-V51" secondAttribute="top" id="FGL-wN-OHg"/>
<constraint firstItem="oNQ-i1-b49" firstAttribute="leading" secondItem="XBn-Je-V51" secondAttribute="leading" id="f4T-Mh-ZdB"/>
<constraint firstAttribute="bottom" secondItem="oNQ-i1-b49" secondAttribute="bottom" id="qwX-hf-UtO"/>
<constraint firstAttribute="trailing" secondItem="oNQ-i1-b49" secondAttribute="trailing" id="tdW-x1-DtX"/>
<constraint firstItem="oNQ-i1-b49" firstAttribute="width" secondItem="XBn-Je-V51" secondAttribute="width" id="urs-jZ-3Hi"/>
</constraints>
</scrollView>
</subviews>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
<constraints>
<constraint firstItem="VsF-QR-ZgP" firstAttribute="trailing" secondItem="XBn-Je-V51" secondAttribute="trailing" constant="40" id="bww-Xy-uZ6"/>
<constraint firstItem="XBn-Je-V51" firstAttribute="top" secondItem="VsF-QR-ZgP" secondAttribute="top" constant="40" id="dP4-Ax-cgr"/>
<constraint firstItem="XBn-Je-V51" firstAttribute="leading" secondItem="VsF-QR-ZgP" secondAttribute="leading" constant="40" id="eof-fi-9Ml"/>
<constraint firstItem="VsF-QR-ZgP" firstAttribute="bottom" secondItem="XBn-Je-V51" secondAttribute="bottom" constant="40" id="euP-M7-rBT"/>
</constraints>
<viewLayoutGuide key="safeArea" id="VsF-QR-ZgP"/>
</view>
<connections>
<outlet property="theTextView" destination="Mwg-70-9L2" id="IWV-hn-TRM"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="q25-D5-Cge" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="-114.40000000000001" y="58.920539730134934"/>
</scene>
</scenes>
</document>
好的，事实证明我有一些限制不允许文本视图正确调整大小。我禁用了文本视图上的滚动，删除了滚动视图和内容视图上的高度限制，现在一切似乎都正常了。我感谢所有的建议！你们帮了大忙！