Ios 内存和CPU问题单击后退按钮-Swift

我的应用程序有一个内存\ CPU的问题：当我在一个特定页面上按下我的后退按钮时，内存和CPU会不断增长，因此应用程序崩溃

我使用的滚动视图大约有40个按钮，具有特殊属性和约束。每个按钮都有一个功能。在我的页面上，还有许多视图构成了一个网格。 我只有在按下这个特定页面上的后退按钮时才会出现这个问题

可能页面太大了？我还使用此功能关闭页面，但不起作用：

    func back(sender: UIBarButtonItem) {
    // Go back to the previous ViewController
    navigationController?.popViewController(animated: true)
}

这是我按下按钮时更改UILabel背景颜色的功能：

func changeColor(sender: ElectroButton){

    let args = arrayFunc
    weak var label1, label2, label3, label4: ElectroLabel!

    for arg in args {
        if arg.objectType == "LBL" && arg.variableName == sender.variableName{
            print(arg.variableName, sender.variableName)
            let label = arg as! ElectroLabel
            label.redColor = sender.redColor
            label.blueColor = sender.blueColor
            label.greenColor = sender.greenColor
            label.backgroundColor = UIColor(colorLiteralRed: label.redColor, green: label.greenColor, blue: label.blueColor, alpha: 1)
            label.actualValue = sender.actualValue
        }

        if arg.objectType == "LBL"{
            switch arg.variableName! {
            case "LBL1":
                label1 = arg as! ElectroLabel
            case "LBL2":
                label2 = arg as! ElectroLabel
            case "LBL3":
                label3 = arg as! ElectroLabel
            case "LBL4":
                label4 = arg as! ElectroLabel
            default:
                break
            }
        }
    }

    for arg in args {

        if arg.objectType == "LBL" && arg.variableName == "RRISULTANTE"{
            let label = arg as! ElectroLabel
            let firstCh = label.variableSymbol.characters.first
            for el in sender.dictOfMeasure{
                if "\(firstCh!)" == el.value{
                    let index = label.variableSymbol.index((label.variableSymbol.startIndex), offsetBy: 1)
                    label.variableSymbol = label.variableSymbol.substring(from: index)
                    break
                }
            }
            label.actualKey = "4"

            let result = ((label1.actualValue! + label2.actualValue!) as NSString).floatValue * (label3.actualValue! as NSString).floatValue
            label.actualValue = String(result)

            self.changeSymbOp3(sender: label)

            label.text = label.actualValue + " " + label.variableSymbol + " " + label4.actualValue + " %"

        }

    }



}

这是我在页面中定位对象的功能：

func detectElementPosition(arrayPos: Array<String>, object: AnyObject){


    var a = 0
    var b = 0

    while a < 121 {

        let row: UIView? = {
            let row = UIView()
            row.translatesAutoresizingMaskIntoConstraints = false
            scrollView.addSubview(row)
            return row
        }()

        row.widthAnchor.constraint(equalTo: section_width).isActive = true
        row.heightAnchor.constraint(equalToConstant: 0).isActive = true
        row.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: box_height*CGFloat(a)).isActive = true



        if a == Int(arrayPos[2]) {
            object.topAnchor.constraint(equalTo: row.bottomAnchor).isActive = true
        }

        if a == Int(arrayPos[3]) {
            object.bottomAnchor.constraint(equalTo: row.topAnchor).isActive = true
        }


        a+=1
    }

    while b < 51 {

        let line: UIView = {
            let section = UIView()
            section.translatesAutoresizingMaskIntoConstraints = false
            //section.backgroundColor = UIColor.black
            return section
        }()
        scrollView.addSubview(line)
        line.heightAnchor.constraint(equalTo: section_height).isActive = true
        line.widthAnchor.constraint(equalToConstant: 0).isActive = true
        line.leftAnchor.constraint(equalTo: scrollView.leftAnchor, constant: box_width*CGFloat(b)).isActive = true

        if b == Int(arrayPos[4]) {
            object.leftAnchor.constraint(equalTo: line.rightAnchor).isActive = true
        }

        if b == Int(arrayPos[5]) {
            object.rightAnchor.constraint(equalTo: line.leftAnchor).isActive = true
        }

        b+=1

    }



}

---

有什么想法吗？

你说应用程序崩溃了？你有堆栈跟踪吗？如果你有，你应该把它贴出来。您提供的信息量不足以确定实际问题。此外，与其描述问题，不如展示问题，因为您的描述可能不如原始信息本身更能说明问题

Message from debugger: Terminated due to memory issue