也就是说,你可以：

foo.h中

@interface Foo:NSObject
...public API here...
@property(readonly,copy) NSString *name;
@end

Foo_FrameworkOnly.h

@interface Foo()
@property(readwrite,copy) NSString *name;
@end

Foo.m

#import "Foo.h"
#import "Foo_FrameworkOnly.h"

@interface Foo()
... truly implementation private gunk,including properties go here ...
@end

@implementation Foo
@synthesize name = name_;
@end

并且实际上有一个公开的只读属性和私有读写只能导入Foo_FrameworkOnly.h的实现文件.