是的,您可以将您想要排除的目录的 NSURL 传递给它。
- (BOOL)addSkipBackupAttributeToItemAtURL:(NSURL *)URL
{
assert([[NSFileManager defaultManager] fileExistsAtPath: [URL path]]);
NSError *error = nil;
BOOL success = [URL setResourceValue:[NSNumber numberWithBool: YES]
forKey: NSURLIsExcludedFromBackupKey error: &error];
if(!success){
NSLog(@"Error excluding %@ from backup %@", [URL lastPathComponent], error);
}
return success;
}
如果有疑问,您可以使用
id flag = nil;
[URL getResourceValue: &flag
forKey: NSURLIsExcludedFromBackupKey error: &error];
NSLog (@"NSURLIsExcludedFromBackupKey flag value is %@", flag)