Ios 如何查找NSMutableDictionary中是否存在给定字符串

我有一个

NSString=@“KEY3”和
NSMutableDictionary*所有值如下所示。我只需要检查字符串是否是AllValues字典的元素之一

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 ?

您可以尝试获取元素

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

您可以尝试获取元素

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

您可以在for循环的帮助下找到它

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

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

它是否有用？
您可以在for循环的帮助下找到它

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

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

它是否有用？
if（[AllValues objectForKey:@“KEY3”]）{NSLog（@“YES”）；}if（[AllValues objectForKey:@“KEY3”]）{NSLog（@“YES”）；}