uilabel有轮廓或中风 [英] uilabel with outline or stroke

问题描述

我想知道如何为UILabel创建文本笔划？有什么办法吗？

I was wondering how can I create text stroke for UILabel ? is there any possible way ?

谢谢你，

#import <Foundation/Foundation.h>


@interface CustomLabel : UILabel {

 }

 @end

#import "CustomLabel.h"


@implementation CustomLabel

- (void)drawTextInRect:(CGRect)rect {

    CGSize shadowOffset = self.shadowOffset;
    UIColor *textColor = self.textColor;

    CGContextRef c = UIGraphicsGetCurrentContext();
    CGContextSetLineWidth(c, 22);

    CGContextSetTextDrawingMode(c, kCGTextStroke);
    self.textColor = [UIColor whiteColor];
    [super drawTextInRect:rect];

    CGContextSetTextDrawingMode(c, kCGTextFill);
    self.textColor = textColor;
    self.shadowOffset = CGSizeMake(0, 0);
    [super drawTextInRect:rect];

    self.shadowOffset = shadowOffset;
    //works fine with no warning 
}   

现在的问题是如何我可以在不同的viewcontrollers上使用带有IBOutlet标签的子类。是对的：

now the question is how can i use this subclass with a IBOutlet label on different viewcontrollers . is it right :

    label = [[CustomLabel alloc] initWithFrame:CGRectMake(0, 0, 190, 190)];

推荐答案

根据具体情况，某些人可能会有所帮助字体和字符，添加：

It may be helpful to some to add that depending on font and characters, adding:

CGContextSetLineJoin(c,kCGLineJoinRound);

可以防止过多的笔划应用于过于尖锐的角色。

can prevent artifacts from too large a stroke applied to too sharp a character.

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