插入一個NSDictionary的NSArray

Question

如果我有一個NSArray，我可以把它放到一個NSDictionary？ 如果是這樣，我該怎麼做？

Answer 1

的NSDictionary可以使用任何對象作爲值，以及任何obj符合NSCopying作爲關鍵。所以你的情況：

NSArray * myArray = [NSArray arrayWithObjects:@"a", @"b", @"c"]; 

NSDictionary * dict = [NSDictionary dictionaryWithObject:myArray forKey:@"threeLetters"]; 

NSMutableDictionary * mutableDict = [NSMutableDictionary dictionaryWithCapacity:10]; 
[mutableDict setObject:myArray forKey:@"threeLetters"]; 

Answer 2

如果你開始myArray：

NSArray *myArray = [NSArray arrayWithObjects:...]; 

如果你想有一個可變字典：

NSMutableDictionary *myMutableDictionary = [NSMutableDictionary dictionary]; 
[myMutableDictionary setObject:myArray forKey:@"myArray"]; 

如果你只是想要一本字典：

NSDictionary *myDictionary = [NSDictionary dictionaryWithObject:myArray forKey:@"myArray"]; 

Answer 3

也許你應該閱讀： http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/Collections/Collections.html#//apple_ref/doc/uid/10000034i