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我想获得的txt文件中使用NSMetadataQuery我的应用程序的iCloud的文件夹中的阵列所推荐的苹果:的iCloud:获取TXT数组文件存在于OS的云X
NSMetadataQuery *query = [[NSMetadataQuery alloc] init];
[query setSearchScopes:[NSArray arrayWithObject:NSMetadataQueryUbiquitousDocumentsScope]];
NSPredicate *pred = [NSPredicate predicateWithFormat:@"%K ENDSWITH '.txt'", NSMetadataItemFSNameKey];
[query setPredicate:pred];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(queryDidFinishGathering:) name:NSMetadataQueryDidFinishGatheringNotification object:query];
[query startQuery];
不幸的是queryDidFinishGathering :永远不会被调用。我究竟做错了什么?
谢谢!
是否使用ARC? – 2012-03-17 03:58:11
@RobKeniger是的,我愿意。为什么?? – Daniel 2012-03-17 19:25:46