2011-11-21 39 views

回答

1

如何:

NSFetchRequest *request = [[NSFetchRequest alloc] init]; 
request.entity = [[NSEntityDescription] entityWithName:@"myEntity" inManagedObjectContext:myContext]; 
request.resultType = NSDictionaryResultType; 
NSError *fetchError = nil; 
NSArray *results = [myContext executeFetchRequest:request error:&fetchError]; 

如果不使用ARC,釋放適當保留的對象。