为UILabel iphone创建文本笔划

Question

我想知道如何在iOS4中为UILabel创建文本笔划？我需要一些建议。我想要这样的东西：

已编辑：

UIFont *font =  [UIFont fontWithName:@"Arial" size:222];
CGPoint point = CGPointMake(0,0);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 0.7);
CGContextSetRGBStrokeColor(context, 2, 2, 2, 1.0);
CGContextSetTextDrawingMode(context, kCGTextFillStroke);
CGContextSaveGState(context);

// I change it to my outlet
[label.text drawAtPoint:point withFont:font];

CGContextRestoreGState(context);

Answer 1

UIFont *font =  [UIFont fontWithName:@"Arial" size:14];
CGPoint point = CGPointMake(0,0);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 0.7);
CGContextSetRGBStrokeColor(context, 0.0, 0.0, 0.0, 1.0);
CGContextSetTextDrawingMode(context, kCGTextFillStroke);
CGContextSaveGState(context);
[@"Label" drawAtPoint:point withFont:font];

CGContextRestoreGState(context);

你可以看看这里：

http://developer.apple.com/library/ios/#documentation/GraphicsImaging/Conceptual/drawingwithquartz2d/dq_text/dq_text.html

并在此处的示例代码中： http://developer.apple.com/library/ios/#samplecode/QuartzDemo/Introduction/Intro.html%23//apple_ref/doc/uid/DTS40007531

Answer 2

我有一个实现UILabelStroke子类的简洁解决方案：

@implementation UILabelStroked
@synthesize strokeColor;
- (void)drawTextInRect:(CGRect)rect {

    UIColor *borderColor = self.strokeColor;
    UIColor *fillColor = self.textColor;
    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetLineWidth(context, 1.0f);
    CGContextSetTextDrawingMode(context, kCGTextStroke);
    self.textColor = borderColor;
    [super drawTextInRect:rect];

    CGContextSetLineWidth(context, 0.0f);
    CGContextSetTextDrawingMode(context, kCGTextFillStroke);
    self.textColor = fillColor;
    [super drawTextInRect:rect];
}
@end