label 字間距 行間距設置

label 字間距 行間距設置

羣裏討論看到 ，先記下來，會用到的。

在drowInrect裏

//設置字間距

if(self.characterSpacing)

{

 long number = self.characterSpacing;

 CFNumberRef num = CFNumberCreate(kCFAllocatorDefault,kCFNumberSInt8Type,&number);

 [string addAttribute:(id)kCTkernAttributeName value:(id)num rang:NSMakeRange(0,[string length])];

 CFRelease(num);

}

//設置文本行間距

CGFloat lineSpace = self.linesSpacing;

CTParagraphStyleSetting lineSpaceStyle;

lineSpaceStyle.spec = kCTparagraphStyleSpecifierLineSpacingAdjustment;

lineSpaceStyle.valueSize = sizeof(lineSpace);

lineSpaceStyle.value =&lineSpace;