ios - UICollectionView 中的单元格间距

Question

如何在部分中设置单元格间距UICollectionView？我知道有一个属性minimumInteritemSpacing我已将其设置为 5.0，但间距未显示为 5.0。我已经实现了 flowout 委托方法。

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section
{

    return 5.0;
}

我仍然没有得到想要的结果。我认为它的最小间距。有没有什么办法可以设置最大间距？

模拟器 sc

score 193 · Accepted Answer

支持最初的问题。我试图将间距设置为 5px，UICollectionView但这不起作用，以及UIEdgeInsetsMake(0,0,0,0)...

在 UITableView 上，我可以通过直接连续指定 x,y 坐标来做到这一点......

在此处输入图像描述

这是我的 UICollectionView 代码：

#pragma mark collection view cell layout / size
- (CGSize)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    return [self getCellSize:indexPath];  // will be w120xh100 or w190x100
    // if the width is higher, only one image will be shown in a line
}

#pragma mark collection view cell paddings
- (UIEdgeInsets)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    return UIEdgeInsetsMake(0, 0, 0, 0); // top, left, bottom, right
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {

    return 5.0;
}

更新：使用以下代码解决了我的问题。

在此处输入图像描述

视图控制器.m

#import "ViewController.h"
#import "MagazineCell.h" // created just the default class. 

static NSString * const cellID = @"cellID";

@interface ViewController ()

@end

@implementation ViewController

#pragma mark - Collection view
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
    return 1;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return 30;
}

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    MagazineCell *mCell = (MagazineCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellID forIndexPath:indexPath];

    mCell.backgroundColor = [UIColor lightGrayColor];

    return mCell;
}

#pragma mark Collection view layout things
// Layout: Set cell size
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"SETTING SIZE FOR ITEM AT INDEX %d", indexPath.row);
    CGSize mElementSize = CGSizeMake(104, 104);
    return mElementSize;
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
    return 2.0;
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
    return 2.0;
}

// Layout: Set Edges
- (UIEdgeInsets)collectionView:
(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
   // return UIEdgeInsetsMake(0,8,0,8);  // top, left, bottom, right
    return UIEdgeInsetsMake(0,0,0,0);  // top, left, bottom, right
}

@end

score 151 · Accepted Answer

我知道这个话题很老了，但如果有人仍然需要正确的答案，你需要什么：

覆盖标准流程布局。

添加这样的实现：

- (NSArray *) layoutAttributesForElementsInRect:(CGRect)rect {
    NSArray *answer = [super layoutAttributesForElementsInRect:rect];

    for(int i = 1; i < [answer count]; ++i) {
        UICollectionViewLayoutAttributes *currentLayoutAttributes = answer[i];
        UICollectionViewLayoutAttributes *prevLayoutAttributes = answer[i - 1];
        NSInteger maximumSpacing = 4;
        NSInteger origin = CGRectGetMaxX(prevLayoutAttributes.frame);

        if(origin + maximumSpacing + currentLayoutAttributes.frame.size.width < self.collectionViewContentSize.width) {
            CGRect frame = currentLayoutAttributes.frame;
            frame.origin.x = origin + maximumSpacing;
            currentLayoutAttributes.frame = frame;
        }
    }
    return answer;
}

其中 maximumSpacing 可以设置为您喜欢的任何值。这个技巧保证单元格之间的空间将完全等于maximumSpacing！

score 84 · Accepted Answer

Using a horizontal flow layout, I was also getting a 10 points spacing between cells. To remove the spacing I needed to set minimumLineSpacing as well as minimumInterItemSpacing to zero.

UICollectionViewFlowLayout *flow = [[UICollectionViewFlowLayout alloc] init];
flow.itemSize = CGSizeMake(cellWidth, cellHeight);
flow.scrollDirection = UICollectionViewScrollDirectionHorizontal;
flow.minimumInteritemSpacing = 0;
flow.minimumLineSpacing = 0;

Also, if all your cells are the same size, it's simpler and more efficient to set the property on the flow layout directly instead of using delegate methods.

score 72 · Accepted Answer

请记住，它是最小行间距，而不是最小项目间距或单元格空间。因为您的 collectionView 的滚动方向是HORIZONTAL。

如果它是垂直的，那么您需要为单元格之间的水平空间设置单元格空间或项目间空间，为单元格之间的垂直空间设置行间距。

Objective-C 版本

- (CGFloat)collectionView:(UICollectionView *)collectionView
                       layout:(UICollectionViewLayout*)collectionViewLayout
    minimumLineSpacingForSectionAtIndex:(NSInteger)section
    {
        return 20;
    }

斯威夫特版本：

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return 20
}

score 37 · Accepted Answer

试试这个代码，以确保每个项目之间有 5px 的间距：

- (UIEdgeInsets)collectionView:(UICollectionView *) collectionView 
                        layout:(UICollectionViewLayout *) collectionViewLayout 
        insetForSectionAtIndex:(NSInteger) section {

    return UIEdgeInsetsMake(0, 0, 0, 5); // top, left, bottom, right
}

- (CGFloat)collectionView:(UICollectionView *) collectionView
                   layout:(UICollectionViewLayout *) collectionViewLayout
  minimumInteritemSpacingForSectionAtIndex:(NSInteger) section {    
    return 5.0;
}

score 35 · Accepted Answer

最受欢迎答案的Swift版本。单元格之间的空间将等于cellSpacing。

class CustomViewFlowLayout : UICollectionViewFlowLayout {

    let cellSpacing:CGFloat = 4

    override func layoutAttributesForElementsInRect(rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
        if let attributes = super.layoutAttributesForElementsInRect(rect) {
        for (index, attribute) in attributes.enumerate() {
                if index == 0 { continue }
                let prevLayoutAttributes = attributes[index - 1]
                let origin = CGRectGetMaxX(prevLayoutAttributes.frame)
                if(origin + cellSpacing + attribute.frame.size.width < self.collectionViewContentSize().width) {
                    attribute.frame.origin.x = origin + cellSpacing
                }
            }
            return attributes
        }
        return nil
    }
}

score 31 · Accepted Answer

我发现使用 IB 来配置单元格或行之间的间距非常简单。

只需从 storyboard/Xib 文件中选择 UICollectionView 并单击下图中指定的 Size Inspector 。

要以编程方式配置空间，请使用以下属性。

1) 用于设置行之间的空间。

[self.collectionView setMinimumLineSpacing:5];

2）用于设置项目/单元格之间的空间。

[self.collectionView setMinimumInteritemSpacing:5];

score 22 · Accepted Answer

请注意属性名称minimumInterItemSpacing。这将是项目之间的最小间距，而不是确切的间距。如果将 minimumInterItemSpacing 设置为某个值，则可以确保间距不会小于该值。但是有机会获得更高的价值。

实际上，项目之间的间距取决于几个因素itemSize和sectionInset。集合视图根据这些值动态放置内容。所以你不能保证确切的间距。您应该对sectionInset和minimumInterItemSpacing进行一些试验和错误。

score 16 · Accepted Answer

Swift 3.0、Xcode 8 的答案

1.确保设置集合视图委托

class DashboardViewController: UIViewController {
    @IBOutlet weak var dashboardCollectionView: UICollectionView!

    override func viewDidLoad() {
        super.viewDidLoad()
        dashboardCollectionView.delegate = self
    }
}

2.实现UICollectionViewDelegateFlowLayout协议，而不是UICollectionViewDelegate。

extension DashboardViewController: UICollectionViewDelegateFlowLayout {
    fileprivate var sectionInsets: UIEdgeInsets {
        return .zero
    }

    fileprivate var itemsPerRow: CGFloat {
        return 2
    }

    fileprivate var interitemSpace: CGFloat {
        return 5.0
    }

    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        sizeForItemAt indexPath: IndexPath) -> CGSize {
        let sectionPadding = sectionInsets.left * (itemsPerRow + 1)
        let interitemPadding = max(0.0, itemsPerRow - 1) * interitemSpace
        let availableWidth = collectionView.bounds.width - sectionPadding - interitemPadding
        let widthPerItem = availableWidth / itemsPerRow

        return CGSize(width: widthPerItem, height: widthPerItem)
    }

    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        insetForSectionAt section: Int) -> UIEdgeInsets {
        return sectionInsets
    }

    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 0.0
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return interitemSpace
    }
}

score 13 · Accepted Answer

间距的简单代码

let layout = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
layout.minimumInteritemSpacing = 10 // Some float value

score 10 · Accepted Answer

投票的答案（以及swift 版本）有一个小问题：右边会有很大的间距。

这是因为流布局是定制的，以使单元格间距精确，具有向左浮动的行为。

我的解决方案是操作部分插图，使部分居中对齐，但间距与指定的完全一致。

在下面的屏幕截图中，项目/行间距正好是 8pt，而左右插图部分将大于 8pt（使其居中对齐）：

Swift 代码如下：

private let minItemSpacing: CGFloat = 8
private let itemWidth: CGFloat      = 100
private let headerHeight: CGFloat   = 32

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

    // Create our custom flow layout that evenly space out the items, and have them in the center
    let layout = UICollectionViewFlowLayout()
    layout.itemSize = CGSize(width: itemWidth, height: itemWidth)
    layout.minimumInteritemSpacing = minItemSpacing
    layout.minimumLineSpacing = minItemSpacing
    layout.headerReferenceSize = CGSize(width: 0, height: headerHeight)

    // Find n, where n is the number of item that can fit into the collection view
    var n: CGFloat = 1
    let containerWidth = collectionView.bounds.width
    while true {
        let nextN = n + 1
        let totalWidth = (nextN*itemWidth) + (nextN-1)*minItemSpacing
        if totalWidth > containerWidth {
            break
        } else {
            n = nextN
        }
    }

    // Calculate the section inset for left and right. 
    // Setting this section inset will manipulate the items such that they will all be aligned horizontally center.
    let inset = max(minItemSpacing, floor( (containerWidth - (n*itemWidth) - (n-1)*minItemSpacing) / 2 ) )
    layout.sectionInset = UIEdgeInsets(top: minItemSpacing, left: inset, bottom: minItemSpacing, right: inset)

    collectionView.collectionViewLayout = layout
}

score 8 · Accepted Answer

在头文件中定义UICollectionViewDelegateFlowLayout协议。

像这样实现以下UICollectionViewDelegateFlowLayout协议方法：

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
    return UIEdgeInsetsMake(5, 5, 5, 5);
}

单击此处查看 AppleUIEdgeInsetMake方法文档。

score 8 · Accepted Answer

故事板方法

在情节提要中选择 CollectionView 并转到大小检查器并将单元格和行的最小间距设置为 5

Swift 5 以编程方式

lazy var collectionView: UICollectionView = {
        let layout = UICollectionViewFlowLayout()
        layout.scrollDirection = .horizontal

        //Provide Width and Height According to your need
        let width = UIScreen.main.bounds.width / 4
        let height = UIScreen.main.bounds.height / 10
        layout.itemSize = CGSize(width: width, height: height)

        //For Adjusting the cells spacing
        layout.minimumInteritemSpacing = 5
        layout.minimumLineSpacing = 5

        return UICollectionView(frame: self.view.frame, collectionViewLayout: layout)
    }()

score 3 · Accepted Answer

如果您想在不触及实际单元格大小的情况下调整间距，这是最适合我的解决方案。#xcode 9 #tvOS11 #iOS11 #swift

因此，在UICollectionViewDelegateFlowLayout中，更改实现下一个方法，诀窍是你必须同时使用它们，而文档并没有真正指出我要朝那个方向思考。:D

open func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return cellSpacing
}

public func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return cellSpacing
}

score 3 · Accepted Answer

好吧，如果您正在创建一个水平集合视图，那么要在单元格之间留出空间，您需要设置 property minimumLineSpacing。

score 2 · Accepted Answer

我使用的是 monotouch，所以名称和代码会有点不同，但您可以通过确保 collectionview 的宽度等于 (x * cell width) + (x-1) * MinimumSpacing with x = amount 来做到这一点每行的单元格数。

只需根据您的 MinimumInteritemSpacing 和单元格的宽度执行以下步骤

1）我们根据单元格大小+当前插图+最小间距计算每行的项目数量

float currentTotalWidth = CollectionView.Frame.Width - Layout.SectionInset.Left - Layout.SectionInset.Right (Layout = flowlayout)
int amountOfCellsPerRow = (currentTotalWidth + MinimumSpacing) / (cell width + MinimumSpacing)

2) 现在您有了所有信息来计算集合视图的预期宽度

float totalWidth =(amountOfCellsPerRow * cell width) + (amountOfCellsPerRow-1) * MinimumSpacing

3）所以当前宽度和预期宽度之间的差异是

float difference = currentTotalWidth - totalWidth;

4）现在调整插图（在本例中我们将其添加到右侧，因此collectionview的左侧位置保持不变

Layout.SectionInset.Right = Layout.SectionInset.Right + difference;

score 2 · Accepted Answer

我有一个水平UICollectionView和子类UICollectionViewFlowLayout。集合视图有很大的单元格，一次只显示一行，集合视图适合屏幕的宽度。

我尝试了 iago849 的回答，它奏效了，但后来我发现我什至不需要他的回答。出于某种原因，设置minimumInterItemSpacing没有任何作用。我的项目/单元格之间的间距可以完全由minimumLineSpacing.

不知道为什么它会这样工作，但它确实有效。

score 2 · Accepted Answer

我Swift 3在 Instagram 中的单元格行间距解决方案：

lazy var collectionView: UICollectionView = {
    let layout = UICollectionViewFlowLayout()
    let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
    cv.backgroundColor = UIColor.rgb(red: 227, green: 227, blue: 227)
    cv.showsVerticalScrollIndicator = false
    layout.scrollDirection = .vertical
    layout.minimumLineSpacing = 1
    layout.minimumInteritemSpacing = 1
    return cv
}()

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {

    switch UIDevice.current.modelName {
    case "iPhone 4":
        return CGSize(width: 106, height: 106)
    case "iPhone 5":
        return CGSize(width: 106, height: 106)
    case "iPhone 6,7":
        return CGSize(width: 124, height: 124)
    case "iPhone Plus":
        return CGSize(width: 137, height: 137)
    default:
        return CGSize(width: frame.width / 3, height: frame.width / 3)
    }
}

如何以编程方式检测设备： https ://stackoverflow.com/a/26962452/6013170

score 1 · Accepted Answer

我偶然发现了与 OP 类似的问题。不幸的是，接受的答案对我不起作用，因为的内容collectionView不会正确居中。因此，我想出了一个不同的解决方案，它只要求中的所有项目collectionView都具有相同的宽度，这似乎是问题中的情况：

#define cellSize 90

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    float width = collectionView.frame.size.width;
    float spacing = [self collectionView:collectionView layout:collectionViewLayout minimumInteritemSpacingForSectionAtIndex:section];
    int numberOfCells = (width + spacing) / (cellSize + spacing);
    int inset = (width + spacing - numberOfCells * (cellSize + spacing) ) / 2;

    return UIEdgeInsetsMake(0, inset, 0, inset);
}

该代码将确保返回的值...minimumInteritemSpacing...将是每个之间的确切间距，collectionViewCell并进一步保证所有单元格将集中在collectionView

score 1 · Accepted Answer

我对接受的答案有疑问，所以我更新了它，这对我有用：

。H

@interface MaxSpacingCollectionViewFlowLayout : UICollectionViewFlowLayout
@property (nonatomic,assign) CGFloat maxCellSpacing;
@end

.m

@implementation MaxSpacingCollectionViewFlowLayout

- (NSArray *) layoutAttributesForElementsInRect:(CGRect)rect {
    NSArray *attributes = [super layoutAttributesForElementsInRect:rect];

    if (attributes.count <= 0) return attributes;

    CGFloat firstCellOriginX = ((UICollectionViewLayoutAttributes *)attributes[0]).frame.origin.x;

    for(int i = 1; i < attributes.count; i++) {
        UICollectionViewLayoutAttributes *currentLayoutAttributes = attributes[i];
        if (currentLayoutAttributes.frame.origin.x == firstCellOriginX) { // The first cell of a new row
            continue;
        }

        UICollectionViewLayoutAttributes *prevLayoutAttributes = attributes[i - 1];
        CGFloat prevOriginMaxX = CGRectGetMaxX(prevLayoutAttributes.frame);
        if ((currentLayoutAttributes.frame.origin.x - prevOriginMaxX) > self.maxCellSpacing) {
            CGRect frame = currentLayoutAttributes.frame;
            frame.origin.x = prevOriginMaxX + self.maxCellSpacing;
            currentLayoutAttributes.frame = frame;
        }
    }
    return attributes;
}

@end

score 1 · Accepted Answer

vojtech-vrbka的上述解决方案是正确的，但会触发警告：

警告：UICollectionViewFlowLayout 缓存了索引路径的帧不匹配 - 缓存值：这可能是因为流布局子类 Layout 是修改 UICollectionViewFlowLayout 返回的属性而不复制它们

以下代码应该修复它：

class CustomViewFlowLayout : UICollectionViewFlowLayout {

   let cellSpacing:CGFloat = 4

   override func layoutAttributesForElementsInRect(rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
       let original = super.layoutAttributesForElementsInRect(rect)

       if let original = original {
           let attributes = NSArray.init(array: original, copyItems: true) as! [UICollectionViewLayoutAttributes]

           for (index, attribute) in attributes.enumerate() {
                if index == 0 { continue }
                let prevLayoutAttributes = attributes[index - 1]
                let origin = CGRectGetMaxX(prevLayoutAttributes.frame)
                if(origin + cellSpacing + attribute.frame.size.width < self.collectionViewContentSize().width) {
                    attribute.frame.origin.x = origin + cellSpacing
                }
            }
            return attributes
       }
       return nil
   }
}

score 1 · Accepted Answer

我已经尝试了 iago849 的答案，它奏效了。

斯威夫特 4

open override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
    guard let answer = super.layoutAttributesForElements(in: rect) else {
        return nil
    }
    let count = answer.count
    for i in 1..<count {
        let currentLayoutAttributes = answer[i]
        let prevLayoutAttributes = answer[i-1]
        let origin = prevLayoutAttributes.frame.maxX
        if (origin + CGFloat(spacing) + currentLayoutAttributes.frame.size.width) < self.collectionViewContentSize.width && currentLayoutAttributes.frame.origin.x > prevLayoutAttributes.frame.origin.x {
            var frame = currentLayoutAttributes.frame
            frame.origin.x = origin + CGFloat(spacing)
            currentLayoutAttributes.frame = frame
        }
    }
    return answer
}

这是 github 项目的链接。 https://github.com/vishalwaka/MultiTags

score 1 · Accepted Answer

斯威夫特 3 版本

只需创建一个 UICollectionViewFlowLayout 子类并粘贴此方法。

override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
        guard let answer = super.layoutAttributesForElements(in: rect) else { return nil }

        for i in 1..<answer.count {
            let currentAttributes = answer[i]
            let previousAttributes = answer[i - 1]

            let maximumSpacing: CGFloat = 8
            let origin = previousAttributes.frame.maxX

            if (origin + maximumSpacing + currentAttributes.frame.size.width < self.collectionViewContentSize.width && currentAttributes.frame.origin.x > previousAttributes.frame.origin.x) {
                var frame = currentAttributes.frame
                frame.origin.x = origin + maximumSpacing
                currentAttributes.frame = frame
            }
        }

        return answer
}

score 0 · Accepted Answer

以前的版本并不真正适用于大于 1 的部分。所以我的解决方案在这里https://codentrick.com/create-a-tag-flow-layout-with-uicollectionview/找到。对于懒惰的人：

override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
    let attributesForElementsInRect = super.layoutAttributesForElements(in: rect)
    var newAttributesForElementsInRect = [UICollectionViewLayoutAttributes]()
    // use a value to keep track of left margin
    var leftMargin: CGFloat = 0.0;
    for attributes in attributesForElementsInRect! {
        let refAttributes = attributes 
        // assign value if next row
        if (refAttributes.frame.origin.x == self.sectionInset.left) {
            leftMargin = self.sectionInset.left
        } else {
            // set x position of attributes to current margin
            var newLeftAlignedFrame = refAttributes.frame
            newLeftAlignedFrame.origin.x = leftMargin
            refAttributes.frame = newLeftAlignedFrame
        }
        // calculate new value for current margin
        leftMargin += refAttributes.frame.size.width + 10
        newAttributesForElementsInRect.append(refAttributes)
    }

    return newAttributesForElementsInRect
}

score -1 · Accepted Answer

尝试使用此方法：

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView
                    layout:(UICollectionViewLayout*)collectionViewLayout
    insetForSectionAtIndex:(NSInteger)section {

    UIEdgeInsets insets = UIEdgeInsetsMake(?, ?, ?, ?);

    return insets;
}

ios - UICollectionView 中的单元格间距

25 回答 25

更新：使用以下代码解决了我的问题。

视图控制器.m

故事板方法

Swift 5 以编程方式

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