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将“帧”设置为其他超视图中另一个视图的帧

cs193p frame swift ios

Sam · 技术社区 · 5 年前

我正在创建不同超视图中的UIViews,但我希望将帧设置为彼此相等。

这就是我目前所做的

let globalPoint = self.view.convert(subViewOfOuterView.frame.origin, to: nil)
let frame = CGRect(x: globalPoint.x, y: globalPoint.y, width: self.subViewOfOuterView.frame.width, height: self.subViewOfOuterView.frame.height)
subViewOfInnerUIView.frame = frame

但我的看法是这样的

更新:Wattholms解决方案的输出

0 回复 | 直到 5 年前

Wattholm 5 年前

请注意,由于它们具有相同的帧,除了具有相同的大小之外,它们相对于它们的超视图也具有相同的位置。

即使有问题的对象位于几层深或浅的子视图中,这也应该起作用。这不要紧。

可以在最新的XCode中在单视图操场中重新创建示例。希望这有帮助!

//: A UIKit based Playground for presenting user interface

import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {
        let view = UIView()
        view.backgroundColor = .white
        self.view = view

        let subView1 = UIView(frame: CGRect(x: 40, y: 250, width: 300, height: 300))
        subView1.backgroundColor = .red
        view.addSubview(subView1)

        let subView2 = UIView(frame: CGRect(x: 20, y: 50, width: 340, height: 100))
        subView2.backgroundColor = .green
        view.addSubview(subView2)

        let drawButton = UIButton(frame: CGRect(x: subView1.frame.width / 2 - 50, y: 25, width: 150, height: 50))
        drawButton.backgroundColor = .blue
        drawButton.setTitle("DRAW BTN", for: .normal)
        subView1.addSubview(drawButton)

        let subViewOfInnerUIView = UIButton()
        subViewOfInnerUIView.setTitle("DRAW BTN2", for: .normal)
        subViewOfInnerUIView.backgroundColor = .brown
        subView2.addSubview(subViewOfInnerUIView)

        let frame = view.convert(drawButton.frame, to: nil)
        subViewOfInnerUIView.frame = frame
    }
}
// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()

//: A UIKit based Playground for presenting user interface

import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {
        let view = UIView()
        view.backgroundColor = .white
        self.view = view

        let subView1 = UIView(frame: CGRect(x: 40, y: 250, width: 300, height: 300))
        subView1.backgroundColor = .red
        view.addSubview(subView1)

        let subView2 = UIView(frame: CGRect(x: 20, y: 50, width: 340, height: 100))
        subView2.backgroundColor = .green
        view.addSubview(subView2)

        let drawButton = UIButton(frame: CGRect(x: subView1.frame.width / 2 - 50, y: 25, width: 150, height: 50))
        drawButton.backgroundColor = .blue
        drawButton.setTitle("DRAW BTN", for: .normal)
        subView1.addSubview(drawButton)

        let subViewOfInnerUIView = UIButton()
        subViewOfInnerUIView.setTitle("DRAW BTN2", for: .normal)
        subViewOfInnerUIView.backgroundColor = .brown
        subView2.addSubview(subViewOfInnerUIView)

        let frame1 = drawButton.frame
        let frame2 = subView1.convert(drawButton.frame, to: view)
        let frame3 = view.convert(frame2, to: subView2)

        print(frame1) // original drawButton frame in its superview
        print(frame2) // drawButton frame relative to the main view (self.view)
        print(frame3) // drawButton frame relative to subView2 (this is the frame you want)

        subViewOfInnerUIView.frame = view.convert(drawButton.frame, to: nil)

        UIView.animate(withDuration: 5.0, delay: 0.0, options: [.autoreverse, .repeat], animations: {
            subViewOfInnerUIView.frame = frame3
        }, completion: nil)

        subViewOfInnerUIView.frame = frame3


    }
}
// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()

最后一行子视图innerview.frame到frame3基本上就是你想要的。您可能可以创建一个函数来完成这3行的工作,以使其更简单(以2个子视图为参数),尽管无可否认,如果视图层次结构很深,它可能不会那么简单:

    let frame2 = subView1.convert(drawButton.frame, to: view)
    let frame3 = view.convert(frame2, to: subView2)
    subViewOfInnerUIView.frame = view.convert(drawButton.frame, to: nil)