更改UIPopoverView背景+箭头颜色

我找到了解决方案。iOS8不再需要子类!可以从表视图中这样访问和更改背景->导航->弹出显示控件

    self.navigationController?.popoverPresentationController?.backgroundColor = UIColor.redColor()

2014年WWDC会议中关于此的更多信息。

您可以像这样简单地修改弹出窗口:

    let popoverViewController = self.storyboard?.instantiateViewControllerWithIdentifier("popoverSegue")
    popoverViewController!.popoverPresentationController?.delegate = self
    popoverViewController!.modalPresentationStyle = .Popover


    let popoverSize = CGSize(width: 150, height: 60)
    popoverViewController!.preferredContentSize = popoverSize
    let popover = popoverViewController!.popoverPresentationController
    popover?.delegate = self
    popover?.permittedArrowDirections = .Up
    popover?.sourceView = self.view

    //change background color with arrow too!
    popover?.backgroundColor = UIColor.whiteColor()
    popover?.sourceRect = CGRect(x: self.view.frame.width, y: -10, width: 0, height: 0)
    presentViewController(popoverViewController!, animated: true, completion: nil)

看起来popoverPresentationControllerbackgroundColor在iOS13中不再有效。

弹出式箭头现在看起来与弹出式视图Controller的view.backgroundColor的颜色相同。

下面是演示的全部代码:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if let sourceButton = sender as? UIButton, let popover = segue.destination.popoverPresentationController {
        popover.sourceView = sourceButton.superview
        popover.sourceRect = sourceButton.frame
        popover.permittedArrowDirections = [.left]
        popover.delegate = self
        segue.destination.preferredContentSize = CGSize(width: 100, height: 100)
        //popover.backgroundColor = sourceButton.tintColor  //old way
        segue.destination.view.backgroundColor = sourceButton.tintColor  //new way
    }
}

@IBAction func btnTap(_ sender: Any) {
    performSegue(withIdentifier: "popoverSegue", sender: sender)
}

func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
    return .none
}

SwiftUI:Xcode 11.5

添加 .background 修改器的颜色并添加 .edgesIgnoringSafeArea 修改器。

.popover(isPresented: self.$vm.presentMenu, content: {
        self.menuView
           .background(Color.bgGray.edgesIgnoringSafeArea(.all))
})

只是补充一下,如果您在UIPopover中使用SwiftUI,或者如果您使用SwiftUI的popover修改器,您可以通过使用 Color 在背景中,如 ZStack .

如果您希望箭头着色,可以添加 .edgesIgnoringSafeArea(.all) 修改背景中的颜色,使其延伸到箭头中。

SwiftUI示例:

import SwiftUI

struct PopoverTest: View {
    @State var showing: Bool = true
    var body: some View {
        Button("Show") {
            self.showing.toggle()
        }
        .popover(isPresented: $showing) {
            ZStack {
                Color.green.edgesIgnoringSafeArea(.all) // will color background and arrow
                Text("Popover!")
            }
        }
    }
}

struct PopoverTest_Previews: PreviewProvider {
    static var previews: some View {
        PopoverTest()
    }
}