Ios_ Strings Display different colors

Recently written code needs to display different colors depending on the content. Here, Mark, please.

To set the color:

NSString *contentstr = @ "Introduction: Hello World"; nsmutableattributedstring *str = [[nsmutableattributedstring alloc]initwithstring:contentstr]; Setting: Content within 0-3 units length is displayed in red [str addattribute:nsforegroundcolorattributename value:[uicolor Redcolor] Range:nsmakerange (0, 3)]; Label.attributedtext = str;

Implementation results:

Now the project has such an effect to achieve:

If shown, you need to make the numbers appear red. The problem is that sometimes the numbers are 2 digits or more, giving yourself a way to mark:

Ios_ Strings Display different colors