您的评论“我的想法是将来在左侧添加一些超出滚动条的图标” 并没有任何意义。如果您想要非滚动图标，只需将它们放在表格视图之外。
将表格视图放在滚动视图中并非不可能……但是，您会失去可重用单元格的效率。
如果你有 40 个相对“重量轻”的电池，可能没什么大不了的。
但是假设你的细胞很“重”？例如，几个图像、控件、标签等？而且，假设您有 100 多个细胞？那么你就不必要地超载了内存使用。
但是，如果您真的想尝试您的方法，您可以像这样子类化UITableView：
// non-scrolling table view that automatically sets its
// intrinsicContentSize based on its cells
final class AutoHeightTableView: UITableView {
override init(frame: CGRect, style: UITableView.Style) {
super.init(frame: frame, style: style)
commonInit()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commonInit()
}
func commonInit() -> Void {
isScrollEnabled = false
setContentCompressionResistancePriority(.required, for: .vertical)
}
override var contentSize: CGSize {
didSet {
invalidateIntrinsicContentSize()
}
}
override func reloadData() {
super.reloadData()
invalidateIntrinsicContentSize()
}
override var intrinsicContentSize: CGSize {
setNeedsLayout()
layoutIfNeeded()
return contentSize
}
}
现在，您的表格视图将更像一个多行标签，根据其内容设置其高度。
这是一个完整的例子：
class DashBoardViewController: UIViewController {
@IBOutlet var autoHeightTableView: AutoHeightTableView!
let sampleStrings: [String] = [
"A sample string.",
"Sample string with\ntwo rows.",
"Sample string with enough text to cause word-wrapping.",
"Sample string with enough text to cause word-wrapping, even if we have a very wide table (such as an iPhone in Landscape Orientation)."
]
var numRows: Int = 1
override func viewDidLoad() {
super.viewDidLoad()
autoHeightTableView.dataSource = self
autoHeightTableView.delegate = self
autoHeightTableView.register(SimpleCell.self, forCellReuseIdentifier: "cell")
}
@IBAction func addRowTapped(_ sender: Any) {
// add a row
numRows += 1
autoHeightTableView.reloadData()
}
@IBAction func removeRowTapped(_ sender: Any) {
// remove a row, but keep at least 1
numRows -= 1
numRows = max(1, numRows)
autoHeightTableView.reloadData()
}
}
extension DashBoardViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return numRows
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let c = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! SimpleCell
let s = sampleStrings[indexPath.row % sampleStrings.count]
c.theLabel.text = "Row \(indexPath.row) - \(s)"
return c
}
}
class SimpleCell: UITableViewCell {
let theLabel: UILabel = {
let v = UILabel()
v.numberOfLines = 0
return v
}()
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
commonInit()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
func commonInit() -> Void {
theLabel.translatesAutoresizingMaskIntoConstraints = false
contentView.addSubview(theLabel)
let g = contentView.layoutMarginsGuide
NSLayoutConstraint.activate([
theLabel.topAnchor.constraint(equalTo: g.topAnchor),
theLabel.leadingAnchor.constraint(equalTo: g.leadingAnchor),
theLabel.trailingAnchor.constraint(equalTo: g.trailingAnchor),
theLabel.bottomAnchor.constraint(equalTo: g.bottomAnchor),
])
theLabel.backgroundColor = .yellow
}
}
和一个与之一起使用的故事板：
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17701" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="2DO-DK-DvL">
<device id="retina3_5" orientation="portrait" appearance="light"/>
<dependencies>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17703"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="System colors in document resources" minToolsVersion="11.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
<!--Dash Board View Controller-->
<scene sceneID="g75-XE-t5u">
<objects>
<viewController id="2DO-DK-DvL" customClass="DashBoardViewController" customModule="VeryTemp" customModuleProvider="target" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="O6N-jW-fEC">
<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="SJM-7N-dTP" userLabel="ButtonView">
<rect key="frame" x="0.0" y="0.0" width="320" height="60"/>
<subviews>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="aEu-IP-rXM">
<rect key="frame" x="101" y="10" width="85" height="40"/>
<color key="backgroundColor" red="1" green="0.49327188729999999" blue="0.47399842739999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="16"/>
<inset key="contentEdgeInsets" minX="10" minY="0.0" maxX="10" maxY="0.0"/>
<state key="normal" title="Add Row"/>
<state key="highlighted">
<color key="titleColor" red="0.83741801979999997" green="0.83743780850000005" blue="0.83742713930000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</state>
<connections>
<action selector="addRowTapped:" destination="2DO-DK-DvL" eventType="touchUpInside" id="QCw-Z5-VC0"/>
</connections>
</button>
<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="xrr-ve-UDf">
<rect key="frame" x="196" y="10" width="114" height="40"/>
<color key="backgroundColor" red="1" green="0.49327188729999999" blue="0.47399842739999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<fontDescription key="fontDescription" type="system" pointSize="16"/>
<inset key="contentEdgeInsets" minX="10" minY="0.0" maxX="10" maxY="0.0"/>
<state key="normal" title="Remove Row"/>
<state key="highlighted">
<color key="titleColor" red="0.83741801979999997" green="0.83743780850000005" blue="0.83742713930000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</state>
<connections>
<action selector="removeRowTapped:" destination="2DO-DK-DvL" eventType="touchUpInside" id="cZu-vf-pDE"/>
</connections>
</button>
</subviews>
<color key="backgroundColor" red="0.83741801979999997" green="0.83743780850000005" blue="0.83742713930000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="60" id="09y-jl-yti"/>
<constraint firstAttribute="bottom" secondItem="xrr-ve-UDf" secondAttribute="bottom" constant="10" id="0Se-yT-hhY"/>
<constraint firstItem="xrr-ve-UDf" firstAttribute="leading" secondItem="aEu-IP-rXM" secondAttribute="trailing" constant="10" id="Bf2-5m-rCJ"/>
<constraint firstItem="aEu-IP-rXM" firstAttribute="top" secondItem="SJM-7N-dTP" secondAttribute="top" constant="10" id="YoS-xx-NXR"/>
<constraint firstAttribute="trailing" secondItem="xrr-ve-UDf" secondAttribute="trailing" constant="10" id="ZN7-IA-HyF"/>
<constraint firstItem="xrr-ve-UDf" firstAttribute="top" secondItem="SJM-7N-dTP" secondAttribute="top" constant="10" id="fOU-kX-dYl"/>
<constraint firstAttribute="bottom" secondItem="aEu-IP-rXM" secondAttribute="bottom" constant="10" id="vKl-iB-du9"/>
</constraints>
</view>
<scrollView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="5tP-7Y-LPu">
<rect key="frame" x="0.0" y="60" width="320" height="420"/>
<subviews>
<view contentMode="scaleToFill" placeholderIntrinsicWidth="infinite" placeholderIntrinsicHeight="320" translatesAutoresizingMaskIntoConstraints="NO" id="rE3-Cv-Een" userLabel="ScrollContentView">
<rect key="frame" x="0.0" y="0.0" width="320" height="320"/>
<subviews>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Active" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="WZM-qS-dOD">
<rect key="frame" x="8" y="8" width="304" height="30"/>
<color key="backgroundColor" systemColor="systemYellowColor"/>
<constraints>
<constraint firstAttribute="height" constant="30" id="IMg-Wn-BgL"/>
</constraints>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
<tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="f4v-Zc-2KD" customClass="AutoHeightTableView" customModule="VeryTemp" customModuleProvider="target">
<rect key="frame" x="8" y="46" width="304" height="228"/>
<color key="backgroundColor" systemColor="systemBackgroundColor"/>
</tableView>
<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Assigned" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="HPf-Zx-zNZ">
<rect key="frame" x="8" y="282" width="304" height="30"/>
<color key="backgroundColor" red="0.0" green="0.97680455450000003" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstAttribute="height" constant="30" id="yqD-Mj-ksF"/>
</constraints>
<fontDescription key="fontDescription" type="system" pointSize="17"/>
<nil key="textColor"/>
<nil key="highlightedColor"/>
</label>
</subviews>
<color key="backgroundColor" systemColor="systemOrangeColor"/>
<constraints>
<constraint firstAttribute="bottom" secondItem="HPf-Zx-zNZ" secondAttribute="bottom" constant="8" id="140-cK-vKT"/>
<constraint firstItem="HPf-Zx-zNZ" firstAttribute="top" secondItem="f4v-Zc-2KD" secondAttribute="bottom" constant="8" id="3yP-CX-WkR"/>
<constraint firstAttribute="trailing" secondItem="HPf-Zx-zNZ" secondAttribute="trailing" constant="8" id="BoD-9D-w0x"/>
<constraint firstAttribute="trailing" secondItem="WZM-qS-dOD" secondAttribute="trailing" constant="8" id="Gg5-xY-Cwl"/>
<constraint firstItem="f4v-Zc-2KD" firstAttribute="top" secondItem="WZM-qS-dOD" secondAttribute="bottom" constant="8" id="KtX-GG-0hK"/>
<constraint firstAttribute="trailing" secondItem="f4v-Zc-2KD" secondAttribute="trailing" constant="8" id="ZYI-Be-xwl"/>
<constraint firstItem="WZM-qS-dOD" firstAttribute="top" secondItem="rE3-Cv-Een" secondAttribute="top" constant="8" id="gd8-b8-jns"/>
<constraint firstItem="f4v-Zc-2KD" firstAttribute="leading" secondItem="rE3-Cv-Een" secondAttribute="leading" constant="8" id="jxB-sB-07D"/>
<constraint firstItem="HPf-Zx-zNZ" firstAttribute="leading" secondItem="rE3-Cv-Een" secondAttribute="leading" constant="8" id="oIJ-Ck-Fn1"/>
<constraint firstItem="WZM-qS-dOD" firstAttribute="leading" secondItem="rE3-Cv-Een" secondAttribute="leading" constant="8" id="sSz-2Y-Yg8"/>
</constraints>
</view>
</subviews>
<color key="backgroundColor" systemColor="systemBlueColor"/>
<constraints>
<constraint firstItem="rE3-Cv-Een" firstAttribute="leading" secondItem="fnD-Eq-tO0" secondAttribute="leading" id="Qfc-ph-JoH"/>
<constraint firstItem="rE3-Cv-Een" firstAttribute="trailing" secondItem="fnD-Eq-tO0" secondAttribute="trailing" id="XN9-8n-zw2"/>
<constraint firstItem="rE3-Cv-Een" firstAttribute="top" secondItem="fnD-Eq-tO0" secondAttribute="top" id="ehk-so-dph"/>
<constraint firstItem="rE3-Cv-Een" firstAttribute="width" secondItem="AzI-2g-Rnq" secondAttribute="width" id="jDq-Zz-Sxk"/>
<constraint firstItem="rE3-Cv-Een" firstAttribute="bottom" secondItem="fnD-Eq-tO0" secondAttribute="bottom" id="sZW-ak-PM4"/>
</constraints>
<viewLayoutGuide key="contentLayoutGuide" id="fnD-Eq-tO0"/>
<viewLayoutGuide key="frameLayoutGuide" id="AzI-2g-Rnq"/>
</scrollView>
</subviews>
<viewLayoutGuide key="safeArea" id="od6-UL-Lpv"/>
<color key="backgroundColor" systemColor="systemBackgroundColor"/>
<constraints>
<constraint firstItem="od6-UL-Lpv" firstAttribute="bottom" secondItem="5tP-7Y-LPu" secondAttribute="bottom" id="2dd-pa-B3b"/>
<constraint firstItem="SJM-7N-dTP" firstAttribute="top" secondItem="od6-UL-Lpv" secondAttribute="top" id="BrD-hB-LgN"/>
<constraint firstItem="od6-UL-Lpv" firstAttribute="trailing" secondItem="5tP-7Y-LPu" secondAttribute="trailing" id="LGO-eJ-Odx"/>
<constraint firstItem="5tP-7Y-LPu" firstAttribute="top" secondItem="SJM-7N-dTP" secondAttribute="bottom" id="ShA-aH-tNi"/>
<constraint firstItem="5tP-7Y-LPu" firstAttribute="leading" secondItem="od6-UL-Lpv" secondAttribute="leading" id="Y3a-Ku-y5C"/>
<constraint firstItem="SJM-7N-dTP" firstAttribute="leading" secondItem="od6-UL-Lpv" secondAttribute="leading" id="iPv-pY-elL"/>
<constraint firstItem="od6-UL-Lpv" firstAttribute="trailing" secondItem="SJM-7N-dTP" secondAttribute="trailing" id="owk-qt-e66"/>
</constraints>
</view>
<connections>
<outlet property="autoHeightTableView" destination="f4v-Zc-2KD" id="dUe-Q7-MBs"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="iKW-xF-1vd" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="341.25" y="100"/>
</scene>
</scenes>
<resources>
<systemColor name="systemBackgroundColor">
<color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
</systemColor>
<systemColor name="systemBlueColor">
<color red="0.0" green="0.47843137254901963" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</systemColor>
<systemColor name="systemOrangeColor">
<color red="1" green="0.58431372549019611" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</systemColor>
<systemColor name="systemYellowColor">
<color red="1" green="0.80000000000000004" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</systemColor>
</resources>
</document>