我在同一 VC 中的代码的 2 个不同部分的 View (在 Storyboard 中创建)中以编程方式创建一些 ImageView ,但我得到了不同的结果。 这是我的代码:
var images: Int?
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
switch images {
case 0:
imagesCount = countImages.noImage
case 1:
imageView1 = UIImageView(frame: CGRect(x: 0, y: 0, width: Int((viewForImages.frame.width)), height: Int((viewForImages.frame.height))))
imageView1.image = UIImage(data: imageData1!)
viewForImages.addSubview(imageView1)
case 2:
for view in self.viewForImages.subviews {
view.removeFromSuperview()
}
imageView1 = UIImageView(frame: CGRect(x: 0, y: 0, width: Int((viewForImages.frame.width) / 2) - 1, height: Int((viewForImages.frame.height))))
imageView1.image = UIImage(data: imageData1!)
viewForImages.addSubview(imageView1)
imageView2 = UIImageView(frame: CGRect(x: Int(imageView1.frame.width) + 1, y: 0, width: Int((viewForImages.frame.width) / 2), height: Int(viewForImages.frame.height)))
imageView2.image = UIImage(data: imageData2!)
viewForImages.addSubview(imageView2)
case 3:
for view in self.viewForImages.subviews {
view.removeFromSuperview()
}
imageView1 = UIImageView(frame: CGRect(x: 0, y: 0, width: Int((viewForImages.frame.width) / 2) - 1, height: Int((viewForImages.frame.height))))
imageView1.image = UIImage(data: imageData1!)
viewForImages.addSubview(imageView1)
imageView2 = UIImageView(frame: CGRect(x: Int((viewForImages.frame.width) / 2) + 1, y: 0, width: Int((viewForImages.frame.width) / 2), height: Int((viewForImages.frame.height) / 2) - 1))
imageView2.image = UIImage(data: imageData2!)
viewForImages.addSubview(imageView2)
imageView3 = UIImageView(frame: CGRect(x: Int((viewForImages.frame.width) / 2) + 1, y: Int(imageView2.frame.height) + 1, width: Int((viewForImages.frame.width) / 2), height: Int((viewForImages.frame.height)) / 2))
imageView3.image = UIImage(data: imageData3!)
viewForImages.addSubview(imageView3)
default:
break
}
}
上面的代码正确显示了 ImageView ,但我也在核心数据中保存了这些图像,当我再次打开这个 View 时,然后在 viewDidLoad() 中,我添加了这段代码:
override func viewDidLoad() {
super.viewDidLoad()
self.imageView1 = UIImageView(frame: CGRect(x: 0, y: 0, width: Int((viewForImages.frame.width) / 2) - 1, height: Int((viewForImages.frame.height))))
if let data = entry.imageData1 {
self.imageView1.image = UIImage(data: data)
}
viewForImages.addSubview(imageView1)
self.imageView2 = UIImageView(frame: CGRect(x: Int((viewForImages.frame.width) / 2) + 1, y: 0, width: Int((viewForImages.frame.width) / 2), height: Int((viewForImages.frame.height) / 2) - 1))
if let data = entry.imageData2 {
self.imageView2.image = UIImage(data: data)
}
viewForImages.addSubview(imageView2)
self.imageView3 = UIImageView(frame: CGRect(x: Int((viewForImages.frame.width) / 2) + 1, y: Int(imageView2.frame.height) + 1, width: Int((viewForImages.frame.width) / 2), height: Int((viewForImages.frame.height)) / 2))
if let data = entry.imageData3 {
self.imageView3.image = UIImage(data: data)
}
viewForImages.addSubview(imageView3)
}
注意:viewForImages 是我使用 Storyboard 创建的 View ,entry 是一个具有 3 个属性的实体:二进制数据 (NSData) 类型的图像 Data1、2、3。 现在当这个 View 出现时,如果 View 已经有图像,它会运行上面的代码,但是首先 imageView1 覆盖了大约 80% 的 View ,而其他 2 个 ImageView 很少出现。为什么会这样?
最佳答案
尝试改变内容模式
imageView.contentMode = .ScaleAspectFill
关于ios - 以不同尺寸显示的 ImageView - Swift,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36449693/