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我在編程方式中在Swift中添加約束時遇到了問題,我創建並添加爲ScrollView中的UIImageView。我希望滾動視圖中的每個圖像的寬度和高度均爲128px。UIScrollView嵌入在UIScrollView(SWIFT)中的約束問題
Here is what the simulator looks like。我想創建基本使用
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var label: UILabel!
@IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.scrollView.frame = CGRectMake(0, 0, self.view.frame.width, 128)
let scrollViewHeight = self.scrollView.frame.height
let scrollViewWidth = self.scrollView.frame.width
var imgOne = UIImageView(frame: CGRectMake(0, 0, scrollViewWidth, scrollViewHeight))
var imgTwo = UIImageView(frame: CGRectMake(scrollViewWidth, 0, scrollViewWidth, scrollViewHeight))
imgOne.image = UIImage(named: "Slide 1")
imgTwo.image = UIImage(named: "Slide 4")
self.scrollView.addSubview(imgOne)
self.scrollView.addSubview(imgTwo)
self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.width * 2, self.scrollView.frame.size.height)
// let horizonalContraints = NSLayoutConstraint(item: scrollView, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.Width, multiplier: 1.0, constant: 0)
// NSLayoutConstraint.activateConstraints([horizonalContraints])