Question

我正在尝试创建一个应用程序，用户可以从其图像库中选择一个用作背景的图像，然后是他们的徽标，他们也可以从他们的（照片）库中选择......

目前我还没有找到可以帮助我的教程，主要是因为用户必须能够设置自己的图像而不是默认图像。另外，你们中的任何人也知道如何拥有多个UIImagePickerControllers，因为这段代码会同时影响两个图像而不是每个选择器一个吗？

我使用/拥有的内容：
我用swift
我使用xcode 7.0.1
这是 the storyboard i currently use

我的快速文件：

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

  @IBOutlet weak var logo: UIImageView!
  @IBOutlet weak var bgimg: UIImageView!

  override func viewDidLoad() {
    super.viewDidLoad()
  }

  @IBAction func selectbg(sender: AnyObject) {
    let bgPicker = UIImagePickerController()
    bgPicker.delegate = self
    bgPicker.sourceType = .PhotoLibrary
    self.presentViewController(bgPicker, animated: true, completion: nil)
  }

  @IBAction func selectlogo(sender: AnyObject) {
    let logoPicker = UIImagePickerController()
    logoPicker.delegate = self
    logoPicker.sourceType = .PhotoLibrary
    self.presentViewController(logoPicker, animated: true, completion: nil)
  }

  func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
    logo.image = image
    bgimg.image = image
    self.dismissViewControllerAnimated(false, completion: nil)
  }


  @IBAction func addImage(sender: AnyObject) {

    let ActionAlert = UIAlertController(title: nil, message: "What image do you want to add/edit?", preferredStyle: .ActionSheet)

    let bgimage = UIAlertAction(title: "Background", style: .Default, handler: { (Alert:UIAlertAction!) -> Void in
        print("Edit background image")
    })
    let logo = UIAlertAction(title: "Logo", style: .Default) { (Alert:UIAlertAction!) -> Void in
        print("Edit logo")
    }
    let cancel = UIAlertAction(title: "Cancel", style: .Cancel) { (Alert:UIAlertAction!) -> Void in
        print("remove menu")
    }

    ActionAlert.addAction(bgimage)
    ActionAlert.addAction(logo)
    ActionAlert.addAction(cancel)

    self.presentViewController(ActionAlert, animated: true, completion: nil)
}

}

如果我不清楚我的问题，请随时提出更多信息

Answer 1

为每个图像创建两个 UIImageView ，并将前景作为子视图添加到父图像中。

这样的事情：

let bgimg = UIImage(named: "image-name") // The image used as a background
let bgimgview = UIImageView(image: bgimg) // Create the view holding the image
bgimgview.frame = CGRect(x: 0, y: 0, width: 500, height: 500) // The size of the background image

let frontimg = UIImage(named: "front-image") // The image in the foreground
let frontimgview = UIImageView(image: frontimg) // Create the view holding the image
frontimgview.frame = CGRect(x: 150, y: 300, width: 50, height: 50) // The size and position of the front image

bgimgview.addSubview(frontimgview) // Add the front image on top of the background

如何在xcode中覆盖图像？

1 个答案: