项目中的一些常用公共方法 - swift3.1
2017-05-19 本文已影响0人
JoyGY
1. 数据显示格式的转换 - 千分位分隔符显示数据
class func thousandsOfSub_spacesForNumber(numStr: String?) -> String{
if numStr != nil && numStr != "<null>" && numStr != "" && numStr != "-"{
let num = Double(numStr!)!
if num < 1000 || num < -1000{
let changeNum = String(format: "%.2f", num)
return changeNum
}else {
let numberFormatter = NumberFormatter()
numberFormatter.positiveFormat = ",###.00;"
let changeNum = numberFormatter.string(from: NSNumber(value: num))
return changeNum!
}
}
return "0.00"
}
2. 将字符串替换*号 - 隐藏显示的数据
/**
- parameter str: 字符
- parameter startindex: 开始字符索引
- parameter endindex: 结束字符索引
- returns: 替换后的字符串
*/
class func stringByX(_ str:String,startindex:Int,endindex:Int) -> String{
//开始字符索引
let startIndex = str.characters.index(str.startIndex, offsetBy: startindex)
//结束字符索引
let endIndex = str.characters.index(str.startIndex, offsetBy: endindex)
let range = Range<String.Index>(startIndex..<endIndex)
var s = String()
for _ in 0..<endindex - startindex{
s += "*"
}
return str.replacingCharacters(in: range, with: s)
}
3. 获取随机颜色
class func randomColorShow() -> UIColor{
let red = Double(arc4random_uniform(256))
let green = Double(arc4random_uniform(256))
let blue = Double(arc4random_uniform(256))
let color = UIColor(red: CGFloat(red/255.0), green: CGFloat(green/255.0), blue: CGFloat(blue/255.0), alpha: 1)
return color
}
4. 获取图片的尺寸大小
class func getImagePicReallySize(_ img: UIImage) -> CGSize {
// 找出图片与屏幕的宽高比例，依照先到达为准
var scale: CGFloat = 0;
let scaleX = screenWidth / img.size.width
let scaleY = screenHeight / img.size.height
scale = (scaleX > scaleY) ? scaleY : scaleX
// 按比例修改Size
let size = CGSize(width: img.size.width * scale, height: img.size.height * scale)
return size
}
5. 获取字符串的宽度和高度size 与 文字行数
class func getTextReallyRectSize(_ text:NSString, font:UIFont, size:CGSize) -> CGRect {
let attributes = [NSFontAttributeName:font]
let option = NSStringDrawingOptions.usesLineFragmentOrigin
let rect:CGRect = text.boundingRect(with: size, options: option, attributes: attributes, context: nil)
return rect
}
/**获取文字的行数 */
class func getHangNumberWithTextString(strW: CGFloat, lagerW: CGFloat) -> Int {
var hang: Int = 1
if strW.truncatingRemainder(dividingBy: lagerW) == 0.0 {
hang = Int(strW / lagerW)
}else {
hang = Int(strW / lagerW + 1)
}
return hang
}
6. 字符串截取
class func stringBySeperate(_ words: String, start: Int, end: Int) -> String {
if words == "<null>" {
return "-"
}
let index = words.characters.index(words.startIndex, offsetBy: start)
let index2 = words.characters.index(words.startIndex, offsetBy: end)
let range = index ..< index2
// Range<String.Index>(start: index, end: index2)
let rangeStr = words.substring(with: range)
return rangeStr
}
7. 富文本设置数值与百分号
class func settingPercentAndValueForDesign(_ textStr: String, textFont: UIFont, textLab: UILabel, textColor: UIColor) {
let color = textColor
let strLength = textStr.characters.count
if strLength == 0 || textStr == "-"{
textLab.text = "-"
}else {
let mutableAttrStr = NSMutableAttributedString(string: textStr)
//8.54
mutableAttrStr.addAttributes([NSFontAttributeName: textFont, NSForegroundColorAttributeName: color], range: NSMakeRange(0,strLength - 1))
//%
mutableAttrStr.addAttributes([NSFontAttributeName: UIFont.systemFont(ofSize: 13), NSForegroundColorAttributeName: color], range: NSMakeRange(strLength - 1,1))
// 富文本显示lab的内容
textLab.attributedText = mutableAttrStr
}
}
8. 获取拼音首字母(传入汉字字符串, 返回大写拼音首字母)
class func getTheFirstLetterForCharacters(_ aString: String) -> String{
//转成了可变字符串
let str = NSMutableString(string: aString)
//先转换为带声调的拼音
CFStringTransform(str, nil, kCFStringTransformMandarinLatin, false)
//再转换为不带声调的拼音
CFStringTransform(str, nil, kCFStringTransformStripDiacritics, false)
//转化为大写拼音
let pinYin: NSString = str.capitalized as NSString
//获取并返回首字母
return pinYin.substring(to: 1)
}
9.获取指定年月的开始和结束的日期
//指定年月的开始日期 - //注意这个直接返回的date是0时区的，需要formate转换成字符串，获取当前时区的，才是正确的结果
class func startOfMonth(year: Int, month: Int) -> NSDate {
let calendar = NSCalendar.current
let startComps = NSDateComponents()
startComps.day = 1
startComps.month = month
startComps.year = year
let startDate = calendar.date(from: startComps as DateComponents)!
return startDate as NSDate
}
//指定年月的结束日期
class func endOfMonth(year: Int, month: Int, returnEndTime:Bool = false) -> NSDate {
let calendar = NSCalendar.current
let components = NSDateComponents()
components.month = 1
if returnEndTime {
components.second = -1
} else {
components.day = -1
}
let endOfYear = calendar.date(byAdding: components as DateComponents, to: startOfMonth(year: year, month: month) as Date)!
return endOfYear as NSDate
}
10. 字典转换成json - 请求时 传送参数-需要传递一个json字符串给服务器
class func dictionaryChangeJSON(dic: NSDictionary) -> NSString {
do {
let tpDic = try JSONSerialization.data(withJSONObject: dic, options: JSONSerialization.WritingOptions.prettyPrinted)
let changeStr = NSString(data: tpDic, encoding: String.Encoding.utf8.rawValue)
return changeStr!
} catch {
fatalError("转换失败:\(error)")
}
}
11. 友好的显示日期格式
class func friendlyTime(_ dateTime: String) -> String {
//日期格式 yyyy年MM月dd日 HH:mm:ss
let dateFormatter: DateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
if let date = dateFormatter.date(from: dateTime) {
let delta = Date().timeIntervalSince(date)//获得秒数
if delta < 3600 { //一个小时内
if delta <= 0 {
return Language.getStrings(name: time_just) //刚刚
}else if (delta < 60) { //几秒以前
return "\(Int(delta)) "+Language.getStrings(name: time_SecondAgo)
}else{ //几分钟以前
return "\(Int(delta / 60)) " + Language.getStrings(name: time_MinuteAgo)
}
}else if delta == 3600 { //1小时
return "1 " + Language.getStrings(name: time_Hour)
}else{
let calendar = Calendar.current
let unitFlags: NSCalendar.Unit = [NSCalendar.Unit.year, NSCalendar.Unit.month, NSCalendar.Unit.day, NSCalendar.Unit.hour, NSCalendar.Unit.minute, NSCalendar.Unit.second]
let comp = (calendar as NSCalendar).components(unitFlags,from:Date())
let currentYear = comp.year!
let currentMonth = comp.month!
let currentDay = comp.day!
let currentHour = comp.hour!
let compSec = (calendar as NSCalendar).components(unitFlags,from: date)
let year = compSec.year!
let month = compSec.month!
let day = compSec.day!
let hour = compSec.hour!
var minute = compSec.minute!
//设置分为两位 16:7--16:07
if compSec.minute! < 10 {
let temp = "0\(minute)"
minute = Int(temp)!
}
//检查是不是在同一天
if currentYear == year && currentMonth == month && currentDay == day {
let divHour = currentHour - hour
return "\(divHour) " + Language.getStrings(name: time_HourAgo)
}else{//不在同一天
if currentYear == year && currentMonth == month {
let divDay = currentDay - day
if divDay == 1 {
return Language.getStrings(name: time_Yesterday) + " \(hour):\(minute)"
}else{
return "\(year)-\(month)-\(day) \(hour):\(minute)"
}
}else{
let divMonth = currentMonth - month
if currentDay == 1 && (divMonth == 1 || (currentMonth == 1 && month == 12)){
return Language.getStrings(name: time_Yesterday) + " \(hour):\(minute)"
}else{
return "\(year)-\(month)-\(day) \(hour):\(minute)"
}
}
}
}
}
return ""
}
12. 绘制左上角和右上角的两个圆角
/** 绘制左上角和右上角的两个圆角 */
class func drawTopCorner(rect: CGRect, vi: UIView, borderColor: UIColor) {
//切左上右上圆角
let maskPath = UIBezierPath(roundedRect:vi.bounds, byRoundingCorners: [.topLeft,.topRight], cornerRadii: CGSize(width: 5.0, height: 5.0))
let maskLayer = CAShapeLayer()
maskLayer.frame = vi.bounds
maskLayer.path = maskPath.cgPath
vi.layer.mask = maskLayer
//添加border
let borderLayer = CAShapeLayer()
borderLayer.frame = vi.bounds
borderLayer.path = maskPath.cgPath
borderLayer.lineWidth = 0.5
borderLayer.strokeColor = borderColor.cgColor
borderLayer.fillColor = UIColor.clear.cgColor
let layers:NSArray = vi.layer.sublayers! as NSArray
if (((layers.lastObject! as! CALayer).isKind(of: CAShapeLayer.self))) {
(layers.lastObject as AnyObject).removeFromSuperlayer()
}
vi.layer.addSublayer(borderLayer)
}
13. 绘制左下角和右下角的两个圆角
/** 绘制左下角和右下角的两个圆角 */
class func drawBottomCorner(rect: CGRect, vi: UIView, borderColor: UIColor) {
//切左下右下圆角
let maskPath = UIBezierPath(roundedRect:vi.bounds, byRoundingCorners:[.bottomLeft,.bottomRight], cornerRadii: CGSize(width: 5.0, height: 5.0))
let maskLayer = CAShapeLayer()
maskLayer.frame = vi.bounds
maskLayer.path = maskPath.cgPath
vi.layer.mask = maskLayer
//添加border
let borderLayer = CAShapeLayer()
borderLayer.frame = vi.bounds
borderLayer.path = maskPath.cgPath
borderLayer.lineWidth = 0.5
borderLayer.strokeColor = borderColor.cgColor
borderLayer.fillColor = UIColor.clear.cgColor
let layers:NSArray = vi.layer.sublayers! as NSArray
if (((layers.lastObject! as! CALayer).isKind(of: CAShapeLayer.self))) {
(layers.lastObject as AnyObject).removeFromSuperlayer()
}
vi.layer.addSublayer(borderLayer)
}
