有没有办法在 Objective-C 中直接访问外部字典的内部字典?例如,我有一个对象的键,它是内部字典的一部分,有没有办法直接从该键访问对象。
GameDictionary {
Indoor_Game = { "game1" = chess; "game2" = video_Game; "game3" = poker; };
OutDoor_Game = { "game4" = cricket; "game5" = hockey; "game6" = football; };
};
我有一个键“game4”,但我不知道这个键的哪个字典对象存在,目前我必须在每个字典中搜索对象,我使用的代码是:
NSString* gameName = nil;
NSString* gameKey = @"game4";
NSArray* gameKeys = [GameDictionary allKeys];
for (int index = 0; index < [gameKeys count]; index ++) {
NSDictionary* GameType = [GameDictionary objectForKey:[gameKeys objectAtIndex:index]];
if ([GameType objectForKey:gameKey]) {
gameName = [GameType objectForKey:gameKey];
break;
}
}
他们是否有任何简单的方法可以直接访问内部字典而不是 for 循环。