本文介绍了Swift 中的多色文本的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
你能帮我吗,我试图制作多色文本,但我收到一个 SIGABRT 错误,但绝对不知道它来自哪里.代码如下:
Can you please help me, I tried to make multicolour text but I get a SIGABRT error but absolutely don't know from were it comes from. Here's the code:
class ViewController: UIViewController {
@IBOutlet weak var ColoredTxt: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
var Timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: ColoredTxt, selector: Selector("ColoredTxt"), userInfo: nil, repeats: true)
}
@IBAction func Btn(sender: AnyObject) {
let redValue = CGFloat(drand48())
let greenValue = CGFloat(drand48())
let blueValue = CGFloat(drand48())
ColoredTxt.textColor = UIColor(red: redValue, green: greenValue, blue: blueValue, alpha: 1.0)
}
func randomColor() {
let redValue = CGFloat(drand48())
let greenValue = CGFloat(drand48())
let blueValue = CGFloat(drand48())
ColoredTxt.textColor = UIColor(red: redValue, green: greenValue, blue: blueValue, alpha: 1.0)
}
}
推荐答案
你需要这样的东西,使用 NSMutableAttributedString
可以让你做这样的事
You need something like this, using NSMutableAttributedString
allow you do things like this
这是代码
func multicolorString(originalString : String) ->NSMutableAttributedString
{
let mutableString = NSMutableAttributedString(string: originalString)
for index in 0..<originalString.characters.count
{
if(index % 2 == 0)
{
mutableString.addAttribute(NSForegroundColorAttributeName, value: UIColor.green, range: NSMakeRange(index, 1))
}else if(index % 3 == 0)
{
mutableString.addAttribute(NSForegroundColorAttributeName, value: UIColor.blue, range: NSMakeRange(index, 1))
}else{
mutableString.addAttribute(NSForegroundColorAttributeName, value: UIColor.red, range: NSMakeRange(index, 1))
}
}
return mutableString
}
然后像这样使用
self.ColoredTxt.attributedText = self.multicolorString("Owner")
希望对你有帮助
这篇关于Swift 中的多色文本的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!