常用功能
- 去掉首尾空格
- 去掉首尾空格与换行
- 去掉所有空格
- 获取字符串在label中显示的宽
- 获取字符串在label中显示的高
- 生成随机字符串
验证
- 邮箱验证
- 电话验证
- 是否包含汉字
时间相关
- 获取当前时间戳（秒）
- 获取当前时间戳（毫秒）
- 获取当前时间
- 时间戳转格式化时间（秒
- 时间戳转格式化时间（毫秒）
代码
import Foundation
import UIKit
// MARK: - 常用功能
extension String {
/// 去掉首尾空格
var removeHeadAndTailSpace: String {
return self.trimmingCharacters(in: .whitespaces)
}
/// 去掉首尾空格与换行
var removeHeadAndTailSpaceNewLine: String {
return self.trimmingCharacters(in: .whitespacesAndNewlines)
}
/// 去掉所有空格
var removeAllSpace: String {
do {
let regularExpression = try NSRegularExpression(pattern: "\\s*", options: .caseInsensitive)
return regularExpression.stringByReplacingMatches(in: self, options: .withTransparentBounds, range: NSRange(location: 0, length: self.count), withTemplate: "")
} catch _ {
return self.replacingOccurrences(of: " ", with: "", options: .literal, range: nil).replacingOccurrences(of: " ", with: "", options: .literal, range: nil)
}
}
/// 获取字符串在label中显示的宽
/// - Parameters:
/// - font: 字体
/// - height: label高度
/// - Returns: 显示宽
func getWidth(font: UIFont, height: CGFloat) -> CGFloat {
let label = UILabel(frame: CGRect(x: 0, y: 0, width: CGFloat(MAXFLOAT), height: height))
label.text = self
label.font = font
label.textAlignment = .left
label.sizeToFit()
return label.width
}
/// 获取字符串在label中显示的高
/// - Parameters:
/// - font: 字体
/// - width: label宽
/// - Returns: 显示高
func getHeight(font: UIFont, width: CGFloat) -> CGFloat {
let label = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat(MAXFLOAT)))
label.text = self
label.font = font
label.textAlignment = .left
label.numberOfLines = 0
label.sizeToFit()
return label.height
}
// /// MD5加密
// var md5:String {
// let utf8 = cString(using: .utf8)
// var digest = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
// CC_MD5(utf8, CC_LONG(utf8!.count - 1), &digest)
// return digest.reduce("") { $0 + String(format:"%02X", $1) }
// }
/// 生成随机字符串
///
/// - Parameters:
/// - count: 生成字符串长度
/// - isLetter: false=大小写字母和数字组成，true=大小写字母组成，默认为false
/// - Returns: String
static func random(_ count: Int, _ isLetter: Bool = false) -> String {
var ch: [CChar] = Array(repeating: 0, count: count)
for index in 0..<count {
var num = isLetter ? arc4random_uniform(58)+65:arc4random_uniform(75)+48
if num>57 && num<65 && isLetter==false { num = num%57+48 }
else if num>90 && num<97 { num = num%90+65 }
ch[index] = CChar(num)
}
return String(cString: ch)
}
}
// MARK: - 验证
extension String {
/// 邮箱验证
func isValidateEmail() -> Bool {
let emailRegex = "^[a-z0-9A-Z]+[- | a-z0-9A-Z . _]+@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-z]{2,}$"
let emailTest = NSPredicate(format: "SELF MATCHES %@", emailRegex)
return emailTest.evaluate(with:self)
}
/// 电话验证
func isTelPhone() -> Bool {
let telRegex1 = "^[0-9]{10}$";
let telRegex2 = "^[0-9]{3}-[0-9]{3}-[0-9]{4}$";
let telRegex3 = "^\\([0-9]{3}\\)[0-9]{3}-[0-9]{4}$";
let telRegex4 = "^\\([0-9]{3}\\)[0-9]{7}$";
let telRegex5 = "^[0-9]{3}-[0-9]{4}$";
let telRegex6 = "^[0-9]{3}\\.[0-9]{3}\\.[0-9]{4}$";
let telTest1 = NSPredicate(format: "SELF MATCHES %@", telRegex1)
let telTest2 = NSPredicate(format: "SELF MATCHES %@", telRegex2)
let telTest3 = NSPredicate(format: "SELF MATCHES %@", telRegex3)
let telTest4 = NSPredicate(format: "SELF MATCHES %@", telRegex4)
let telTest5 = NSPredicate(format: "SELF MATCHES %@", telRegex5)
let telTest6 = NSPredicate(format: "SELF MATCHES %@", telRegex6)
return telTest1.evaluate(with:self)||telTest2.evaluate(with:self)||telTest3.evaluate(with:self)||telTest4.evaluate(with:self)||telTest5.evaluate(with:self)||telTest6.evaluate(with:self)
}
/// 是否包含汉字
func isIncludeChineseIn() -> Bool {
for (_, value) in self.enumerated() {
if ("\u{4E00}" <= value && value <= "\u{9FA5}") {
return true
}
}
return false
}
}
// MARK: - 时间相关
extension String {
/// 获取当前时间戳（秒）
static func getNowTimeStamp() -> String {
//获取当前时间
let now = Date()
//当前时间的时间戳
let timeInterval:TimeInterval = now.timeIntervalSince1970
let timeStamp = Int(timeInterval)
return "\(timeStamp)"
}
/// 获取当前时间戳（毫秒）
static func getNowTimeMilliStamp() -> String {
//获取当前时间
let now = Date()
//当前时间的时间戳
let timeInterval: TimeInterval = now.timeIntervalSince1970
let millisecond = CLongLong(round(timeInterval*1000))
return "\(millisecond)"
}
/// 获取当前时间
/// - Parameter dateFormat: 时间格式（如：yyyy-MM-dd HH:mm:ss）
static func getNowTimeString(dateFormat: String) -> String {
//获取当前时间
let now = Date()
// 创建一个日期格式器
let dformatter = DateFormatter()
dformatter.dateFormat = dateFormat
return dformatter.string(from: now)
}
/// 时间戳转格式化时间（秒）
/// - Parameter dateFormat: 时间格式（如：yyyy-MM-dd HH:mm:ss）
func getTimeString(dateFormat: String) -> String {
guard let timeStamp = Double(self) else { return "" }
//转换为时间
let timeInterval:TimeInterval = TimeInterval(timeStamp)
let date = Date(timeIntervalSince1970: timeInterval)
// 创建一个日期格式器
let dformatter = DateFormatter()
dformatter.dateFormat = dateFormat
return dformatter.string(from: date)
}
/// 时间戳转格式化时间（毫秒）
/// - Parameter dateFormat: 时间格式（如：yyyy-MM-dd HH:mm:ss）
func getMilliTimeString(dateFormat: String) -> String {
guard let timeStamp = Double(self) else { return "" }
//转换为时间
let timeInterval:TimeInterval = TimeInterval(timeStamp/1000)
let date = Date(timeIntervalSince1970: timeInterval)
// 创建一个日期格式器
let dformatter = DateFormatter()
dformatter.dateFormat = dateFormat
return dformatter.string(from: date)
}
}
demo参考： github
