1.导入字体文件

2.info.plist 文件设置Fonts provided by application

3.要查找字体的真实名称 (重要重要!!!!)
for(NSString* fontfamilyname in [UIFontfamilyNames])
{
NSLog(@"family:'%@'",fontfamilyname);
NSLog(@"-------------");
}
4.使用字体
+(UIFont*)boldItalicAltFont:(CGFloat)size{
return [UIFont fontWithName:@"DIN-BoldItalicAlt" size:size];
}