如何启用 UITableViewCell 内的 UICollection View 的水平滚动？

问题描述 投票：0回答：2

我有一个 

UICollectionView
放在 
UITableViewCell
里面。集合视图的滚动方向设置为水平。但是，当我向左或向右滑动以尝试滚动时，它不起作用。相反，只是按下表视图单元格。看起来表视图正在吞噬手势并且不允许集合视图注册它。

如何才能使集合视图可以通过水平滑动左右滚动，同时仍然允许父表视图垂直滚动？

我浏览了这个SO问题及其接受的答案的链接博客文章，但它似乎没有解决我遇到的问题。一时兴起，我还尝试根据

这个问题
将
sendSubviewToBack(self.contentView)
扔到我的表格视图单元格的awakeFromNib()中，但它似乎没有做任何事情。

swift xcode uitableview uicollectionview uiscrollview
2个回答
1
投票

如果没有看到你的项目就很难知道......

不过，这里是尽可能基本的设置。

  • 表格视图控制器
  • 带有“行标签”和集合视图的单元原型和类
  • 集合视图原型和类

故事板来源：

<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="19529" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="Ets-ss-TQd">
    <device id="retina3_5" orientation="portrait" appearance="light"/>
    <dependencies>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19519"/>
        <capability name="System colors in document resources" minToolsVersion="11.0"/>
        <capability name="collection view cell content view" minToolsVersion="11.0"/>
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <scenes>
        <!--Table Col Table View Controller-->
        <scene sceneID="6jQ-dU-swf">
            <objects>
                <tableViewController id="Ets-ss-TQd" customClass="TableColTableViewController" customModule="MoreScratch" customModuleProvider="target" sceneMemberID="viewController">
                    <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="-1" estimatedSectionHeaderHeight="-1" sectionFooterHeight="-1" estimatedSectionFooterHeight="-1" id="zYt-i6-X2h">
                        <rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                        <prototypes>
                            <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="default" indentationWidth="10" reuseIdentifier="someTableCell" rowHeight="125" id="B1r-57-a4y" customClass="SomeTableCell" customModule="MoreScratch" customModuleProvider="target">
                                <rect key="frame" x="0.0" y="44.5" width="320" height="125"/>
                                <autoresizingMask key="autoresizingMask"/>
                                <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" tableViewCell="B1r-57-a4y" id="Zyt-9U-dTe">
                                    <rect key="frame" x="0.0" y="0.0" width="320" height="125"/>
                                    <autoresizingMask key="autoresizingMask"/>
                                    <subviews>
                                        <collectionView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" dataMode="prototypes" translatesAutoresizingMaskIntoConstraints="NO" id="d9m-rN-Eyd">
                                            <rect key="frame" x="16" y="54" width="288" height="60"/>
                                            <color key="backgroundColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                            <constraints>
                                                <constraint firstAttribute="height" constant="60" id="E26-bE-U5T"/>
                                            </constraints>
                                            <collectionViewFlowLayout key="collectionViewLayout" scrollDirection="horizontal" minimumLineSpacing="10" minimumInteritemSpacing="4" id="mrH-RV-vqe">
                                                <size key="itemSize" width="92" 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" reuseIdentifier="someCollectionCell" id="JEj-s8-EVA" customClass="SomeCollectionCell" customModule="MoreScratch" customModuleProvider="target">
                                                    <rect key="frame" x="0.0" y="5" width="92" height="50"/>
                                                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                                    <collectionViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" insetsLayoutMarginsFromSafeArea="NO" id="mgI-0a-PJH">
                                                        <rect key="frame" x="0.0" y="0.0" width="92" height="50"/>
                                                        <autoresizingMask key="autoresizingMask"/>
                                                        <subviews>
                                                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="wJ1-UE-IvG">
                                                                <rect key="frame" x="8" y="8" width="76" height="34"/>
                                                                <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>
                                                        </subviews>
                                                        <constraints>
                                                            <constraint firstItem="wJ1-UE-IvG" firstAttribute="leading" secondItem="mgI-0a-PJH" secondAttribute="leadingMargin" id="7v0-S7-Kcb"/>
                                                            <constraint firstItem="wJ1-UE-IvG" firstAttribute="top" secondItem="mgI-0a-PJH" secondAttribute="topMargin" id="NUW-9U-OkK"/>
                                                            <constraint firstAttribute="bottomMargin" secondItem="wJ1-UE-IvG" secondAttribute="bottom" id="YXn-Qi-b3X"/>
                                                            <constraint firstAttribute="trailingMargin" secondItem="wJ1-UE-IvG" secondAttribute="trailing" id="ZNu-px-4Va"/>
                                                        </constraints>
                                                    </collectionViewCellContentView>
                                                    <connections>
                                                        <outlet property="label" destination="wJ1-UE-IvG" id="0fz-E6-bfF"/>
                                                    </connections>
                                                </collectionViewCell>
                                            </cells>
                                            <connections>
                                                <outlet property="dataSource" destination="B1r-57-a4y" id="hHd-RQ-xJb"/>
                                                <outlet property="delegate" destination="B1r-57-a4y" id="3kW-TN-RKS"/>
                                            </connections>
                                        </collectionView>
                                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Row Label" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="GpB-tj-mDa">
                                            <rect key="frame" x="16" y="11" width="288" height="35"/>
                                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
                                            <nil key="textColor"/>
                                            <nil key="highlightedColor"/>
                                        </label>
                                    </subviews>
                                    <constraints>
                                        <constraint firstAttribute="trailingMargin" secondItem="d9m-rN-Eyd" secondAttribute="trailing" id="3Fd-ue-yEB"/>
                                        <constraint firstAttribute="bottomMargin" secondItem="d9m-rN-Eyd" secondAttribute="bottom" priority="999" id="5EL-HQ-hli"/>
                                        <constraint firstAttribute="trailingMargin" secondItem="GpB-tj-mDa" secondAttribute="trailing" id="UiZ-V8-tk0"/>
                                        <constraint firstItem="d9m-rN-Eyd" firstAttribute="leading" secondItem="Zyt-9U-dTe" secondAttribute="leadingMargin" id="axO-Nr-EUG"/>
                                        <constraint firstItem="GpB-tj-mDa" firstAttribute="leading" secondItem="Zyt-9U-dTe" secondAttribute="leadingMargin" id="hM3-MG-T66"/>
                                        <constraint firstItem="d9m-rN-Eyd" firstAttribute="top" secondItem="GpB-tj-mDa" secondAttribute="bottom" constant="8" id="muE-Zg-mgg"/>
                                        <constraint firstItem="GpB-tj-mDa" firstAttribute="top" secondItem="Zyt-9U-dTe" secondAttribute="topMargin" id="nea-19-Qvm"/>
                                    </constraints>
                                </tableViewCellContentView>
                                <connections>
                                    <outlet property="collectionView" destination="d9m-rN-Eyd" id="UOs-i9-xDd"/>
                                    <outlet property="rowTitleLabel" destination="GpB-tj-mDa" id="LpD-4r-JgM"/>
                                </connections>
                            </tableViewCell>
                        </prototypes>
                        <connections>
                            <outlet property="dataSource" destination="Ets-ss-TQd" id="RC7-c1-RLO"/>
                            <outlet property="delegate" destination="Ets-ss-TQd" id="sLA-mZ-FSY"/>
                        </connections>
                    </tableView>
                </tableViewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="435-nV-YGQ" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
            </objects>
            <point key="canvasLocation" x="125.625" y="225"/>
        </scene>
    </scenes>
    <resources>
        <systemColor name="systemBackgroundColor">
            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
        </systemColor>
    </resources>
</document>

课程：

import UIKit

struct SomeDataStruct {
    var color: UIColor = .white
    var num: Int = 0
}

class TableColTableViewController: UITableViewController {

    var myData: [SomeDataStruct] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let colors: [UIColor] = [
            .systemRed, .systemGreen, .systemBlue, .cyan, .magenta, .yellow,
            .red, .green, .blue, .orange, .brown, .purple,
        ]
        let nums: [Int] = [
            12, 15, 8, 21, 17, 14,
            16, 10, 5, 13, 20, 19,
        ]
        for (c, n) in zip(colors, nums) {
            let d = SomeDataStruct(color: c, num: n)
            myData.append(d)
        }
        
    }
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return myData.count
    }
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "someTableCell", for: indexPath) as! SomeTableCell
        cell.rowTitleLabel.text = "Row \(indexPath.row)"
        cell.thisData = myData[indexPath.row]
        return cell
    }
}

class SomeTableCell: UITableViewCell {
    @IBOutlet var rowTitleLabel: UILabel!
    @IBOutlet var collectionView: UICollectionView!
    var thisData: SomeDataStruct = SomeDataStruct() {
        didSet {
            collectionView.reloadData()
        }
    }
}
extension SomeTableCell: UICollectionViewDataSource, UICollectionViewDelegate {
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 1
    }
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return thisData.num
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "someCollectionCell", for: indexPath) as! SomeCollectionCell
        cell.label.text = "Cell \(indexPath.item)"
        cell.contentView.backgroundColor = thisData.color
        return cell
    }
}
class SomeCollectionCell: UICollectionViewCell {
    @IBOutlet var label: UILabel!
}

结果：

enter image description here

0
投票

您现在可以在具有可组合布局的 UICollectionView 中使用正交滚动，以获得垂直和水平滚动的集合视图。

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