由于官方没有给十六进制的颜色使用方法所以自己转一下
使用延展
创建 UIColor+RGBColor.swift
1.png
- 使用以下代码
import UIKit
extension UIColor{
class func hexadecimalColor(hexadecimal:String)->UIColor{
var cstr = hexadecimal.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines).uppercased() as NSString;
if(cstr.length < 6){
return UIColor.clear;
}
if(cstr.hasPrefix("0X")){
cstr = cstr.substring(from: 2) as NSString
}
if(cstr.hasPrefix("#")){
cstr = cstr.substring(from: 1) as NSString
}
if(cstr.length != 6){
return UIColor.clear;
}
var range = NSRange.init()
range.location = 0
range.length = 2
//r
let rStr = cstr.substring(with: range);
//g
range.location = 2;
let gStr = cstr.substring(with: range)
//b
range.location = 4;
let bStr = cstr.substring(with: range)
var r :UInt32 = 0x0;
var g :UInt32 = 0x0;
var b :UInt32 = 0x0;
Scanner.init(string: rStr).scanHexInt32(&r);
Scanner.init(string: gStr).scanHexInt32(&g);
Scanner.init(string: bStr).scanHexInt32(&b);
return UIColor.init(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: 1);
}
}
- 之后就可以愉快的使用了：
let color = UIColor.hexadecimalColor(hexadecimal: "#778ef2");
