Question

我是iOS开发的新手，我正在构建自定义UIFlowLayout，我目前正在构建自定义单元格对象，其中包含图像和标签。

我想在UIImage下绘制标签，但我不知道如何将其直接锚定在UIImage下。

我想要实现的布局如下：

===========================
[      Navigation Bar     ]
===========================

 [  Image  ]   [  Image  ]
 [  Label  ]   [  Label  ]

 [  Image  ]   [  Image  ]
 [  Label  ]   [  Label  ]

 [  Image  ]   [  Image  ]
 [  Label  ]   [  Label  ]

===========================
[         Tab Bar         ]
===========================

我目前用于UICollectionViewCell子类的代码如下：

var label     : UILabel!
var imageView : UIImageView!

override init(frame: CGRect)
{
    // Initialize the frame object
    super.init(frame: frame)
    self.backgroundColor = UIColor.grayColor()

    // Set up the image
    imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: frame.size.width, height: frame.size.height))
    imageView.contentMode = UIViewContentMode.ScaleAspectFill
    imageView.clipsToBounds = true
    contentView.addSubview(imageView)

    // Make the rectangle a circle by adjusting the corner radius, relative to 50% of the bounds
    self.layer.cornerRadius = (frame.size.width / 100) * 50

    // Set up the label (how do I do the anchoring?)
    label = UILabel(frame: frame)
    label.font = UIFont.systemFontOfSize(UIFont.smallSystemFontSize())
    label.textAlignment = .Center
    label.text = "Alexander Sims"
    contentView.addSubview(label)
}

Answer 1

设置标签的框架时，可以使用imageView.frame作为参考。

这样的事情：

 let labelX = imageView.frame.origin.x
 let labelY = imageView.frame.origin.y + imageView.frame.height

 label = UILabel(frame: CGRectMake(labelX, labelY, imageView.frame.width, 21)) // The last variable, 21, is the label's height.  Change as you see fit.

SWIFT：在UIImage下绘制UILabel

1 个答案: