如何查找NSMutableDictionary中是否存在给定字符串

Question

我有NSString =@"KEY3";和NSMutableDictionary *AllValues ;，如下所示。我只需要检查字符串是否是AllValues Dictionary

的元素之一

KEY1 {
    MLCAvailable = "test";
    MLCColorCode = "test2";
     NotesCount = "test3";
     },
KEY2 {
    MLCAvailable = "test";
    MLCColorCode = "test2";
     NotesCount = "test3";
     },
KEY3 {
    MLCAvailable = "test";
    MLCColorCode = "test2";
     NotesCount = "test3";
     },
KEY4 {
    MLCAvailable = "test";
    MLCColorCode = "test2";
     NotesCount = "test3";
     },

How should i find whether they KEY 3 is present in the given MutableDictionary ?

Answer 1

你可以尝试获取元素......

if(AllValues[@"KEY3"]) {
   //The element exists
}

Answer 2

你可以在for loop

的帮助下找到它

 for (NSString *strKey in [AllValues allKeys]) {

            if ([strKey isEqualToString:@"KEY3"]) {
                //your condition
            }
        }

有用吗？