我正在构造一个NSmetaDataQuery来查找不可见的文件夹(如“.myInvisibleFolder”)。
不幸的是,spotlight似乎无法定位以“.”开头的文件夹,即使在谓词中特别包含了这些文件夹。
什么有效,什么无效
搜索内容工作(kMDItemTextContent)。
找不到以“.”开头的文件。始终返回0个结果。
作为测试,在Finder中搜索不可见的内容是可行的。
我做错了什么?有没有其他方法可以找到不可见的文件夹?
- (void)searchForMyInvisableFolders{
self.query = [[[NSMetadataQuery alloc] init] autorelease];
// To watch results send by the query, add an observer to the NSNotificationCenter
NSNotificationCenter *nf = [NSNotificationCenter defaultCenter];
[nf addObserver:self selector:@selector(queryNote:) name:nil object:self.query];
// Sort results by file name
[self.query setSortDescriptors:[NSArray arrayWithObject:[[[NSSortDescriptor alloc] initWithKey:(id)kMDItemFSName ascending:YES] autorelease]]];
[self.query setDelegate:self];
//Create a predicate to search for file name
NSPredicate* predicate = [NSPredicate predicateWithFormat:@" (kMDItemFSName == '.myInvisibleFolder')"];
//Create a predicate to search for invisible files
NSPredicate* invisablePredicate = [NSPredicate predicateWithFormat:@"kMDItemFSInvisible == YES"];
//Compound predicate
NSPredicate* compoundPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:[NSArray arrayWithObjects:predicate, invisiblePredicate, nil]];
// Set it to the query.
[self.query setPredicate:compoundPredicate];
// Start it.
[self.query startQuery];
}