IOS text attribute dictionary

IOS text attribute dictionary

During iOS development, it is believed that the parameter is a NSDictionary dictionary when the font, color, underline, and other attributes are required.

But which key values are correct in the dictionary?

Let's summarize the commonly used

 

First, we will create the simplest one. Set the font and size.

We use the NSString method.

 

-(Void) drawInRect :( CGRect) rect withAttributes :( NSDictionary *) attrs

To print a string to the view.

 

 

-(Void) drawRect :( CGRect) rect {self. backgroundColor = [UIColor whiteColor]; NSString * attrString = @ hello word; NSDictionary * attrs =@{ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30]}; // Add the text font size to the dictionary [attrString drawInRect: CGRectMake (20,120,320,200) withAttributes: attrs];}

 

Font color

 

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor] // text color };

 

 

Effect

Ii. NSParagraphStyleAttributeName

Paragraph Format

 

-(Void) drawRect :( CGRect) rect {NSString * attrString = @ hello word; NSMutableParagraphStyle * paragraph = [[NSMutableParagraphStyle alloc] init]; paragraph. alignment = align; // center NSDictionary * attrs =@{ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30]; // text color font size: [UIColor redColor], // text color NSParagraphStyleAttributeName: paragraph, // paragraph Format}; [attrString drawInRect: CGRectMake (20,120,320,200) withAttributes: attrs];}

 

 

 

Effect: (center)

 

3. NSBackgroundColorAttributeName

Background Color

 

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format NSBackgroundColorAttributeName: [UIColor blueColor], // background color };

 

 

Effect:

 

 

 

4. NSStrokeColorAttributeName

Set stroke color, which must be used with NSStrokeWidthAttributeName

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format // NSBackgroundColorAttributeName: [UIColor blueColor], // NSStrokeWidthAttributeName: @ 3, // stroke width NSStrokeColorAttributeName: [UIColor greenColor], // set the stroke color and use it with NSStrokeWidthAttributeName. This NSForegroundColorAttributeName is invalid };

 

Effect:

5. NSStrikethroughStyleAttributeName

Strikethrough

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format // NSBackgroundColorAttributeName: [UIColor blueColor], // NSStrokeWidthAttributeName: @ 3, // stroke width NSStrokeColorAttributeName: [UIColor greenColor], // set the stroke color and use it with NSStrokeWidthAttributeName. If NSForegroundColorAttributeName is set, NSStrikethroughStyleAttributeName: @ 1 is invalid. // strikethrough. The number indicates the line width };

 

Effect:

 

 

6. NSUnderlineStyleAttributeName

Underline

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format // NSBackgroundColorAttributeName: [UIColor blueColor], // NSStrokeWidthAttributeName: @ 3, // stroke width NSStrokeColorAttributeName: [UIColor greenColor], // set the stroke color and use it with NSStrokeWidthAttributeName. If NSForegroundColorAttributeName is set, the value is invalid. // Optional: @ 1, // The number indicates the line width. NSUnderlineStyleAttributeName: @ (NSUnderlineStyleSingle), // underline, the value is an enumeration type, you can try it respectively };

 

 

Effect:

7. NSShadowAttributeName

Sets the shadow. Its object is an NSShadow object.

 

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format // NSBackgroundColorAttributeName: [UIColor blueColor], // NSStrokeWidthAttributeName: @ 3, // stroke width NSStrokeColorAttributeName: [UIColor greenColor], // set the stroke color and use it with NSStrokeWidthAttributeName. If NSForegroundColorAttributeName is set, the value is invalid. // Optional: @ 1, // The number indicates the line width. NSUnderlineStyleAttributeName: @ (NSUnderlineStyleSingle), // underline, the value is an enumeration type, you can try NSShadowAttributeName: shadow, // set the shadow, copy to an NSShadow object };

 

NSShadow

 

NSShadow * shadow = [[NSShadow alloc] init]; shadow. shadowBlurRadius = 5; // blur the shadow. shadowColor = [UIColor blueColor]; // shadow color. shadowOffset = CGSizeMake (6, 6); // The Shadow offset relative to the original one.

 

 

 

Effect:

 

8. NSObliquenessAttributeName

Skew

 

NSDictionary * attrs ={ NSFontAttributeName: [UIFont fontWithName: @ AmericanTypewriter size: 30], // text color font size NSForegroundColorAttributeName: [UIColor redColor], // text color limit: paragraph, // paragraph Format // NSBackgroundColorAttributeName: [UIColor blueColor], // NSStrokeWidthAttributeName: @ 3, // stroke width NSStrokeColorAttributeName: [UIColor greenColor], // set the stroke color and use it with NSStrokeWidthAttributeName. If NSForegroundColorAttributeName is set, the value is invalid. // Optional: @ 1, // The number indicates the line width. NSUnderlineStyleAttributeName: @ (NSUnderlineStyleSingle), // underline, the value is an enumeration type. You can try NSShadowAttributeName: shadow, // set the shadow, and copy it as an NSShadow object NSObliquenessAttributeName: @ 1 // skew };

 

Effect:

 

 

We have sorted out some of these commonly used ones, and some of them have not been sorted out. If you are interested, you can study it. You are welcome to join us and discuss it with us.