Question

我试图在不使用故事板的情况下制作应用，但我遇到了问题。我已经设置了自定义单元格，在iPhone 5s上一切正常：

但我的正确标签看起来不对，例如，iPhone 6s +：

这是我的代码：

class CustomTableViewCell: UITableViewCell {


var leftLabel = UILabel()
var currencyValueLabel = UILabel()



required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}


override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
    super.init(style: style, reuseIdentifier: reuseIdentifier)

    leftLabel = UILabel(frame: CGRect(
            x: 16,
            y: 8,
            width: 100,
            height: self.bounds.size.height-16
        ))
        leftLabel.textAlignment = .Left
        addSubview(leftLabel)

    currencyValueLabel = UILabel(frame: CGRect(
            x: self.bounds.size.width-116,
            y: 8,
            width: 100,
            height: self.bounds.size.height-16
        ))
        rightLabel.textAlignment = .Right
        addSubview(rightLabel)

}


}

更新我尝试过自动布局：

leftLabel.leadingAnchor.constraintEqualToAnchor(self.layoutMarginsGuide.leadingAnchor, constant: 20).active = true
    leftLabel.centerYAnchor.constraintEqualToAnchor(self.layoutMarginsGuide.centerYAnchor).active = true

这是结果

    2016-05-05 18:49:09.849 RubApp[57636:2228350] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. 
    Try this: 
        (1) look at each constraint and try to figure out which you don't expect; 
        (2) find the code that added the unwanted constraint or constraints and fix it. 
    (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503d21c50 h=--& v=--& UILabel:0x7fc503cea100'EUR'.midX == + 66>",
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503d1ea40 h=--& v=--& H:[UILabel:0x7fc503cea100'EUR'(100)]>",
    "<NSLayoutConstraint:0x7fc503ce7c00 UILabel:0x7fc503cea100'EUR'.leading == UILayoutGuide:0x7fc503ce8c20'UIViewLayoutMarginsGuide'.leading + 20>",
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503ce98e0 h=-&- v=--& 'UIView-Encapsulated-Layout-Left' H:|-(0)-[RubApp.MainViewCell:0x7fc505868000'idTableCellMainView']   (Names: '|':UITableViewWrapperView:0x7fc505869600 )>",
    "<NSLayoutConstraint:0x7fc503ce7df0 'UIView-leftMargin-guide-constraint' H:|-(15)-[UILayoutGuide:0x7fc503ce8c20'UIViewLayoutMarginsGuide'](LTR)   (Names: '|':RubApp.MainViewCell:0x7fc505868000'idTableCellMainView' )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7fc503ce7c00 UILabel:0x7fc503cea100'EUR'.leading == UILayoutGuide:0x7fc503ce8c20'UIViewLayoutMarginsGuide'.leading + 20>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2016-05-05 18:49:09.857 RubApp[57636:2228350] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. 
    Try this: 
        (1) look at each constraint and try to figure out which you don't expect; 
        (2) find the code that added the unwanted constraint or constraints and fix it. 
    (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503e5a720 h=--& v=--& UILabel:0x7fc503e49b50'USD'.midX == + 66>",
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503e5a940 h=--& v=--& H:[UILabel:0x7fc503e49b50'USD'(100)]>",
    "<NSLayoutConstraint:0x7fc503e56f50 UILabel:0x7fc503e49b50'USD'.leading == UILayoutGuide:0x7fc503e4a3a0'UIViewLayoutMarginsGuide'.leading + 20>",
    "<NSAutoresizingMaskLayoutConstraint:0x7fc503e5ab70 h=-&- v=--& 'UIView-Encapsulated-Layout-Left' H:|-(0)-[RubApp.MainViewCell:0x7fc504030a00'idTableCellMainView']   (Names: '|':UITableViewWrapperView:0x7fc505869600 )>",
    "<NSLayoutConstraint:0x7fc503e4a780 'UIView-leftMargin-guide-constraint' H:|-(15)-[UILayoutGuide:0x7fc503e4a3a0'UIViewLayoutMarginsGuide'](LTR)   (Names: '|':RubApp.MainViewCell:0x7fc504030a00'idTableCellMainView' )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7fc503e56f50 UILabel:0x7fc503e49b50'USD'.leading == UILayoutGuide:0x7fc503e4a3a0'UIViewLayoutMarginsGuide'.leading + 20>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

我知道不断设置有问题，但不知道是什么。很抱歉，如果这个问题很愚蠢，但这是我的第一个没有故事板的应用程序。

Answer 1

一种选择是在addSubview(rightLabel)之前添加此行：

rightLabel.autoresizingMask = .FlexibleLeftMargin

Answer 2

您需要添加NSLayoutConstraint告诉右侧的标签，使其具有x的尾随约束。

自定义tableView单元格中的UILabel位置

2 个答案: