标签栏控制器中的图像和标题重叠 iPhone X？

Question

Tab Bar Controller 内的 Tab Bar Item 在 iPhone X 中重叠。有什么解决方案吗？

Answer 1

我认为这不是一个完美的答案，但下面的代码解决了我的问题。

为你的 tabbarcontroller 创建一个子类

在viewDidLoad方法中添加代码

设宽度=tabBar.bounds.width

if UIDevice().userInterfaceIdiom == .phone {
    switch UIScreen.main.nativeBounds.height {

    case 2436:
        let tabSize = CGSize(width: width/5, height: 83)
        UIGraphicsBeginImageContext(tabSize)
        selectionImage?.draw(in: CGRect(x: 0, y: 0, width: tabSize.width, height: tabSize.height))
        selectionImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()


    default:
        let tabSize = CGSize(width: width/5, height: 49)
        UIGraphicsBeginImageContext(tabSize)
        selectionImage?.draw(in: CGRect(x: 0, y: 0, width: tabSize.width, height: tabSize.height))
        selectionImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()


    }
}

希望对您有所帮助！

Answer 2

发现问题与动画有关。
我能够解决这个问题。
通过使用 CustomTabBar 从 Interface builder 子类化 UITabBarClass

Swift代码 - Class CustomTabBarClass.swift

class CustomTabBarClass: UITabBar {

var oldSafeAreaInsets = UIEdgeInsets.zero

@available(iOS 11.0, *)
override func safeAreaInsetsDidChange() {
    super.safeAreaInsetsDidChange()

    if oldSafeAreaInsets != safeAreaInsets {
        oldSafeAreaInsets = safeAreaInsets

        invalidateIntrinsicContentSize()
        superview?.setNeedsLayout()
        superview?.layoutSubviews()
    }
}

override func sizeThatFits(_ size: CGSize) -> CGSize {
    var size = super.sizeThatFits(size)
    if #available(iOS 11.0, *) {
        let bottomInset = safeAreaInsets.bottom
        if bottomInset > 0 && size.height < 50 && (size.height + bottomInset < 90) {
            size.height += bottomInset
        }
    }
    return size
}

override var frame: CGRect {
    get {
        return super.frame
    }
    set {
        var tmp = newValue
        if let superview = superview, tmp.maxY != 
        superview.frame.height {
            tmp.origin.y = superview.frame.height - tmp.height
        }

        super.frame = tmp
        }
    }
}

Objective C代码 - CustomTabBarClass.m

@implementation CustomTabBarClass{
    UIEdgeInsets oldSafeAreaInsets;
}


- (void)awakeFromNib {
    [super awakeFromNib];

    oldSafeAreaInsets = UIEdgeInsetsZero;
}


- (void)safeAreaInsetsDidChange {
    [super safeAreaInsetsDidChange];

    if (!UIEdgeInsetsEqualToEdgeInsets(oldSafeAreaInsets, self.safeAreaInsets)) {
        [self invalidateIntrinsicContentSize];

        if (self.superview) {
            [self.superview setNeedsLayout];
            [self.superview layoutSubviews];
        }
    }
}

- (CGSize)sizeThatFits:(CGSize)size {
    size = [super sizeThatFits:size];

    if (@available(iOS 11.0, *)) {
        float bottomInset = self.safeAreaInsets.bottom;
        if (bottomInset > 0 && size.height < 50 && (size.height + bottomInset < 90)) {
            size.height += bottomInset;
        }
    }

    return size;
}


- (void)setFrame:(CGRect)frame {
    if (self.superview) {
        if (frame.origin.y + frame.size.height != self.superview.frame.size.height) {
            frame.origin.y = self.superview.frame.size.height - frame.size.height;
        }
    }
    [super setFrame:frame];
}


@end

标签栏控制器中的图像和标题重叠 iPhone X？

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