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私はUILabelで文字間隔を空けるのに役立つこのコードをSOで見つけました。これはコードです:

- (void) drawRect:(CGRect)rect
{
// Drawing code
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSelectFont (context, [self.font.fontName cStringUsingEncoding:NSASCIIStringEncoding], self.font.pointSize, kCGEncodingMacRoman);
CGContextSetCharacterSpacing(context, 2);
CGContextSetFillColorWithColor(context, [[UIColor clearColor] CGColor]);
CGAffineTransform myTextTransform = CGAffineTransformScale(CGAffineTransformIdentity, 1.f, -1.f );

CGContextSetTextMatrix (context, myTextTransform);

// draw 1 but invisbly to get the string length.
CGPoint p =CGContextGetTextPosition(context);
float centeredY = (self.font.pointSize + (self.frame.size.height- self.font.pointSize)/2)-2;
CGContextShowTextAtPoint(context, 0, centeredY, [self.text cStringUsingEncoding:NSASCIIStringEncoding], [self.text length]);
CGPoint v =CGContextGetTextPosition(context);

// calculate width and draw second one.
float width = v.x - p.x;
float destX = 0;

// calculate X position based on alignment
if([self textAlignment] == UITextAlignmentLeft){
    destX = 0;
}else if([self textAlignment] == UITextAlignmentCenter){
    destX = (self.frame.size.width- width)/2;
}else if([self textAlignment] == UITextAlignmentRight){
    destX = self.frame.size.width - width;
}
CGContextSetFillColorWithColor(context, [self.textColor CGColor]);
CGContextShowTextAtPoint(context, destX, centeredY, [self.text cStringUsingEncoding:NSASCIIStringEncoding], [self.text length]);
}

問題は、èàòé のようなアクセント文字で uilabel が空であることです。どうすればこの問題を解決できますか?

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