新建label类继承UILabel
重写下面方法
- (void)drawTextInRect:(CGRect)rect {
CGSize shadowOffset = self.shadowOffset;
UIColor *textColor = self.textColor;
CGContextRef c = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(c, 2);
CGContextSetLineJoin(c, kCGLineJoinRound);
CGContextSetTextDrawingMode(c, kCGTextStroke);
self.textColor = [UIColor blackColor];//描边颜色
[super drawTextInRect:rect];
CGContextSetTextDrawingMode(c, kCGTextFill);
self.textColor = textColor;//字体内部颜色
self.shadowOffset = CGSizeMake(0, 0);
[super drawTextInRect:rect];
self.shadowOffset = shadowOffset;
}
