Swift:在标签背景中制作图像 [英] Swift: Make an image in background of label

问题描述

我想将标签放入带有角半径的红色矩形的图像中(条件是图像尺寸必须等于或稍大于标签一个).为此，我发现了一个类似的问题.我对此进行了测试:

I want to put label into an image that is a red rectangle with corner radius (in condition that the image size must to be equal or slightly higher than the label one). For that I found a similar question. I tested this:

theLabel.backgroundColor = UIColor(patternImage: UIImage(named: "blah")!)

但是图像尺寸有问题.所以我测试了第二个答案:

But I have problems with the image size. So I tested the second answer:

UILabel *myLabel=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 20)];

UIImage *img = [UIImage imageNamed:@"a.png"];
CGSize imgSize = myLabel.frame.size;

UIGraphicsBeginImageContext( imgSize );
[img drawInRect:CGRectMake(0,0,imgSize.width,imgSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

myLabel.backgroundColor = [UIColor colorWithPatternImage:newImage];

具有最新版本的Xcode(Xcode 8.0)的CGRectMake不可用.

Having the last version of Xcode (Xcode 8.0) the CGRectMake is unavailable.

有人可以帮我吗?

推荐答案

尝试以下代码:在Swift 3中测试.

Try this code: Tested in Swift 3.

答案1:

override func viewDidLoad() {
    super.viewDidLoad()

    let label = UILabel()
    label.frame = CGRect(x:0, y:0, width:imageView.frame.width , height:imageView.frame.height)
    label.text = "Some Title"
    label.textAlignment = .center
    label.textColor = .yellow
    label.font = UIFont(name: "HelveticaNeue-medium", size: CGFloat(20))
    imageView.addSubview(label)
}

输出:

答案2: 已更新

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

    imageView.layer.cornerRadius = 10
    imageView.layer.masksToBounds = true

    let label = UILabel()
    label.frame = CGRect(x:0, y:0, width:imageView.frame.width , height:imageView.frame.height)
    label.text = "Some Title"
    label.textAlignment = .center
    label.textColor = .yellow
    label.layer.borderColor  = UIColor.red.cgColor
    label.layer.cornerRadius = 10
    label.layer.masksToBounds = true
    label.layer.borderWidth = 5
    label.font = UIFont(name: "HelveticaNeue-medium", size: CGFloat(26))

    imageView.addSubview(label)
}

注意:您需要调整图像大小和标签字体大小.

Note: You need to workout the image size and label font size.

输出:

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