NSMutableDictionary using objectAtIndex - objective-c

Question

I am new to Xcode and I have created a NSMutableDictionary *dIc with following data:
Keys : ID , Name
Data :
ID = 1, Name = John
ID = 2, Name = Smith
I want to access dIc with specific row. I want this result for example :
Name = Smith.
I tried :
-(void)initiateArrays
{
dIc =[[NSMutableDictionary alloc] init];
}
- (void)viewDidLoad
{
[self initiateArrays];
[self callingWebSrvc];
[super viewDidLoad];
}
-(void)callingWebSrvc
{
NSInteger i=0;
do {
self.selectedRowId = [[mainMenuID objectAtIndex:i]integerValue];
[self getItemListFromWebSrvc];
i++;
} while (i<= mainMenuData.count - 1);
}
-(void) getItemListFromWebSrvc
{
//............ Request ....................................>>>
.
.
.
//............ Response ....................................>>>
NSInteger i = 0;
do {
elm = [xmlDataTable objectAtIndex:i];
//Set Object into Arrays
[dIc setObject:[NSNumber numberWithInt:selectedRowId] forKey:#"Id"];
[dIc setObject:[elm childNamed:#"Name"].value forKey:#"Name"];
NSArray *keys = [rowArray allKeys];
// values in foreach loop
for (NSString *key in keys) {
NSLog(#"%# is %#",key, [dIc objectForKey:key ]);
}
i=i+1;
} while (i <= xmlDataTable.count-1);
}
-(void)showResult
{
NSString *anObject = [[dIc objectForKey:#"Name" ] objectAtIndex:1];
NSLog(#"The Value is = %#",anObject );
}
but it's not working.
when i call [self showResult]; i got the following error:
-[__NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x8b9a7f0
2014-02-26 00:53:57.718 iWish[3311:70b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x8b9a7f0'

Answer 1

The problem is this line:
NSString *anObject = [[dIc objectForKey:#"Name" ] objectAtIndex:1];
The first object in this story, [dIc objectForKey:#"Name" ], is an NSString. You are then saying objectAtIndex:1 to an NSString - and that is a no-no.