系統字體

轉自http://bj007.blog.51cto.com/1701577/548932

iPhone上的系統字體在很多場合都可以滿足要求了。你可以通過系統提供的字體類方法輕鬆地在普通、加粗和斜體之間選擇。示例代碼如下：

UIFont *mainTitleFont = [UIFont boldSystemFontOfSize:14.0]; 
UIFont *subTitleFont = [UIFont SystemFontOfSize:14.0]; 
UIFont *textFont = [UIFont italicSystemFontOfSize:12.0];  

 

 

 

但如果要一個加粗斜體或者其他字體怎麼辦呢？在這種情況下，你可以按如下使用fontWithName方法：  

UIFont *altFont = [UIFont fontWithName:@"Courier-Bold" size:14.0];

 

 

這很好，不過你如何知道可用的字體名字呢？如果你猜錯了字體名字，你的代碼會拋出異常——這裏可沒有映射到最接近字體的優雅處理！

在iPhone文檔上我無法找到可用的字體名字，在網絡上搜索的時候也無果（至少在搜索結果的前幾頁）。所以我寫了如下一段代碼：  

  // 列出iPhone上所有的字體    // List all fonts on iPhone
  NSArray *familyNames = [[NSArray alloc] initWithArray:[UIFont familyNames]];
  NSArray *fontNames;
  NSInteger indFamily, indFont;
  for (indFamily=0; indFamily<[familyNames count]; ++indFamily)
  {
      NSLog(@"Family name: %@", [familyNames objectAtIndex:indFamily]);
      fontNames = [[NSArray alloc] initWithArray:
          [UIFont fontNamesForFamilyName:
          [familyNames objectAtIndex:indFamily]]];
      for (indFont=0; indFont<[fontNames count]; ++indFont)
      {
          NSLog(@"    Font name: %@", [fontNames objectAtIndex:indFont]);
      }
      [fontNames release];
  }
  [familyNames release];

 

如果使用iPhone SDK v2.1輸出結果如下： 
Family name: Hiragino Kaku Gothic ProN W3
    Font name: HiraKakuProN-W3
Family name: Courier
    Font name: Courier
    Font name: Courier-BoldOblique
    Font name: Courier-Oblique
    Font name: Courier-Bold
Family name: Arial
    Font name: ArialMT
    Font name: Arial-BoldMT
    Font name: Arial-BoldItalicMT
    Font name: Arial-ItalicMT
Family name: STHeiti TC
    Font name: STHeitiTC-Light
    Font name: STHeitiTC-Medium
Family name: AppleGothic
    Font name: AppleGothic
Family name: Courier New
    Font name: CourierNewPS-BoldMT
    Font name: CourierNewPS-ItalicMT
    Font name: CourierNewPS-BoldItalicMT
    Font name: CourierNewPSMT
Family name: Zapfino
    Font name: Zapfino
Family name: Hiragino Kaku Gothic ProN W6
    Font name: HiraKakuProN-W6
Family name: Arial Unicode MS
    Font name: ArialUnicodeMS
Family name: STHeiti SC
    Font name: STHeitiSC-Medium
    Font name: STHeitiSC-Light
Family name: American Typewriter
    Font name: AmericanTypewriter
    Font name: AmericanTypewriter-Bold
Family name: Helvetica
    Font name: Helvetica-Oblique
    Font name: Helvetica-BoldOblique
    Font name: Helvetica
    Font name: Helvetica-Bold
Family name: Marker Felt
    Font name: MarkerFelt-Thin
Family name: Helvetica Neue
    Font name: HelveticaNeue
    Font name: HelveticaNeue-Bold
Family name: DB LCD Temp
    Font name: DBLCDTempBlack
Family name: Verdana
    Font name: Verdana-Bold
    Font name: Verdana-BoldItalic
    Font name: Verdana
    Font name: Verdana-Italic
Family name: Times New Roman
    Font name: TimesNewRomanPSMT
    Font name: TimesNewRomanPS-BoldMT
    Font name: TimesNewRomanPS-BoldItalicMT
    Font name: TimesNewRomanPS-ItalicMT
Family name: Georgia
    Font name: Georgia-Bold
    Font name: Georgia
    Font name: Georgia-BoldItalic
    Font name: Georgia-Italic
Family name: STHeiti J
    Font name: STHeitiJ-Medium
    Font name: STHeitiJ-Light
Family name: Arial Rounded MT Bold
    Font name: ArialRoundedMTBold
Family name: Trebuchet MS
    Font name: TrebuchetMS-Italic
    Font name: TrebuchetMS
    Font name: Trebuchet-BoldItalic
    Font name: TrebuchetMS-Bold
Family name: STHeiti K
    Font name: STHeitiK-Medium
    Font name: STHeitiK-Light

 

 

在選用非系統字體的時候，你需要確保選擇的字體在列表中。在將來的iPhone OS中字體列表是否會改變還有待觀察。建議重新運行下上述代碼段進行確認。