获取系统所有字体和当前字体

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+ (NSArray*)getAllSystemFonts; {     NSMutableArray *array = [[[NSMutableArray alloc] init] autorelease];     NSArray* familys = [UIFont familyNames];       for (id obj in familys) {         NSArray* fonts = [UIFont fontNamesForFamilyName:obj];         for (id font in fonts)             {             [array addObject:font];         }     }     return array; }   + (UIFont*)getCurrentFont {     //判断系统字体的size，返回使用的字体。     UIFont *font = [UIFont systemFontOfSize:[UIFont systemFontSize]];     return font; }