定心两个侧由端的对象 [英] Centering two side-by-side objects

问题描述

我试图遵循此处描述的解决方案：

I'm trying to follow the solution described here:

<一个href=\"http://stackoverflow.com/questions/33544940/x$c$c-7-autolayout-constraints-how-to-make-2-images-stay-horizontally-in-the-ce/33545857#33545857\">X$c$c 7自动布局约束：如何让2图像中心水平保持

但它不是为我工作。

以上是从属性检查器的截图，我结束了约束：

These are the screenshots from the Attribute Inspector for the constraints that I ended up with:

任何人都可以看到我错了？

Can anyone see where I am going wrong?

谢谢！

推荐答案

我现在意识到什么问题是。我已经把在故事板所有正确的约束，但是我还没有添加必要的code到视图控制器。我只是使用由X code当你创建一个项目（我没有甚至创造IB网点两个选择器视图）。

I realise now what the issue was. I had put in all the correct constraints on the Storyboard but I had not added the necessary code to the View Controller. I was simply using the View Controller that is automatically generated by Xcode when you create a project (I had not even created IB outlets for the two picker views).

现在，当我添加此code到VC，两个并排侧采摘的布局显示细腻：

Now, when I add this code into the VC, the layout with the two side-by-side pickers displays fine:

import UIKit

类的ViewController：UIViewController的，UIPickerViewDataSource，UIPickerViewDelegate {

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

var pickerDataSource = ["inch", "feet","mile","meter","yard","kilometer"];


@IBOutlet weak var picker1: UIPickerView!
@IBOutlet weak var picker2: UIPickerView!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.


    picker1.dataSource = self;
    picker1.delegate = self;

    picker2.dataSource = self;
    picker2.delegate = self;

}


func CreateColor(hexAlpha: Int, hexRed: Int, hexGreen: Int, hexBlue: Int) -> CGColor{
    return UIColor(red: CGFloat(hexRed)/255.0, green: CGFloat(hexGreen)/255.0, blue: CGFloat(hexBlue)/255.0, alpha: CGFloat(hexAlpha)/255.0).CGColor
}


func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
    return 1
}

func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return pickerDataSource.count;
}



func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return pickerDataSource[row]
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

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