查询所有项目中所有字体

SArray *familyNames = [UIFont familyNames];
for( NSString *familyName in familyNames )
{
printf( "Family: %s \n", [familyName UTF8String]);

NSArray *fontNames = [UIFont fontNamesForFamilyName:familyName];
for( NSString *fontName in fontNames )
{
printf( "\tFont: %s \n", [fontName UTF8String] );
}
NSLog(@"\n------------输出字体种类------------------");
}