Color string Swift

Normally, to color text in label, we use

label.textColor = UIColor.blueColor()

To make text with multi color string, use NSMutableAttributedString.

let text="This is example text"

let at =  NSMutableAttributedString(string: text,attributes: [NSFontAttributeName:UIFont.boldSystemFontOfSize(17)])

        at.addAttribute(NSForegroundColorAttributeName, value:UIColor.redColor(), range: NSMakeRange(0,4))

        at.addAttribute(NSForegroundColorAttributeName, value: UIColor.greenColor(), range: NSRange(location:6,length:5))

       la.attributedText = at

Next, we want to color multi rows string, each row one color, in only one label, by use

NSMutableAttributedString.

Declare an array, add elements.

var day=[String](count: 7, repeatedValue: " ")

        day[0]="Monday"

        day[1]="Tuesday"

        day[2]="Wednesday"

        day[3]="Thursday"

        day[4]="Friday"

        day[5]="Saturday"

        day[6]="Sunday"

Declare colors.

let color1 = [NSForegroundColorAttributeName: UIColor.blackColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color2 = [NSForegroundColorAttributeName: UIColor.brownColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color3 = [NSForegroundColorAttributeName: UIColor.redColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color4 = [NSForegroundColorAttributeName: UIColor.orangeColor(),NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color5 = [NSForegroundColorAttributeName: UIColor.grayColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color6 = [NSForegroundColorAttributeName: UIColor.blueColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let color7 = [NSForegroundColorAttributeName: UIColor.cyanColor(), NSFontAttributeName: UIFont.systemFontOfSize(17)]

let at = NSMutableAttributedString()

var p = NSMutableAttributedString()

Set text gravity to left.

let pa = NSMutableParagraphStyle()

        pa.alignment = .Left

Now use for loop to set color each row.

for i in0..<day.count{

if day[i] == "Monday" {

        p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color1)

            }

elseif day[i] == "Tuesday" {

        p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color2)

            }

elseif day[i] == "Wednesday" {

        p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color3)

                          }

elseif day[i] == "Thursday" {

        p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color4)

                           }

elseif day[i] == "Friday"{

       p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color5)

                            }

elseif day[i] == "Saturday"{

        p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color6)

            }

else {

      p = NSMutableAttributedString(string: thu[i] + "\n", attributes: color7)

            }

 at.appendAttributedString(p)

at.addAttribute(NSParagraphStyleAttributeName,value:pa, range:NSMakeRange(0,1))

 }

label.numberOfLines = 0

lable.attributedText = at

label. sizeToFit()

Run to see result.

la.numberOfLines = 0 make label has many lines row.

label.sizeToFit() make label hight enough.