IOS _ strings show different colors

Source: Internet
Author: User

IOS _ strings show different colors

Recently, you need to display different colors based on different content. Mark it here.

Set color:

 

NSString * contentStr = @ "Introduction: hello world"; NSMutableAttributedString * str = [[NSMutableAttributedString alloc] initWithString: contentStr]; // set: the content within 0-3 units is displayed in red [str addAttribute: NSForegroundColorAttributeName value: [UIColor redColor] range: NSMakeRange (0, 3)]; label. attributedText = str;

Effect:

 

 

The current project has the following effect:

As shown in the following figure, the number must be displayed in red. The problem is that sometimes the number is two or more digits, and you can mark yourself as follows:

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