Getting the name of a key from a NSDictionary
Post: #1
I set up an enumerator on a dictionary, then as I go through, I want the actual names of those keys... not finding the right function for this anywhere. Let me know.
Post: #2
Enumerate on the keys [dict allKeys] then access the objects, or for each object get its keys [obj allKeysForObject]
Post: #3
If you're only looking for the keys in the directory, check out [NSDirectory keyEnumerator]. There is also [NSDirectory allKeys]Â*that returns an array of NSStrings with all the keys.
Post: #4
Erm, maybe I wasn't clear. I have a property list, under it's root it has from 1 to n keys, at which I don't know at compile time.
So say the plist looks like this:
Root:
MyFirstEntry: with more keys embedded inside it
MySecondEntry: with mroe keys embedded inside it
Timmy: with more keys embedded inside it.
I set up my enumerator like so:
Now, I want to know the name of the key I am currently getting from the enumerator. My futile attempt is the [dict stringValue], but I knew that wouldn't work. Basically, I want to know what that dictionary is called in my plist, so later I could use that name for objectForKey:dictionaryName.
So it'd give me my MyFirstEntry, then MySecondEntry, then Timmy.
So say the plist looks like this:
Root:
MyFirstEntry: with more keys embedded inside it
MySecondEntry: with mroe keys embedded inside it
Timmy: with more keys embedded inside it.
I set up my enumerator like so:
Code:
NSEnumerator* keyList = [jobData objectEnumerator];
id group;
while((group = [keyList nextObject]))
{
NSDictionary* dict = (NSDictionary*)group;
//Put this string in the job name...
//NSString* s = [dict stringValue];
//[groupName setStringValue:s];
//Put the job count up
int howManyJobs = [[dict objectForKey:@"jobList"] count];
if(howManyJobs != 1)
[groupJobCount setStringValue:[NSString stringWithFormat:@"%d jobs...", howManyJobs]];
else
[groupJobCount setStringValue:[NSString stringWithFormat:@"%d job...", howManyJobs]];
}Now, I want to know the name of the key I am currently getting from the enumerator. My futile attempt is the [dict stringValue], but I knew that wouldn't work. Basically, I want to know what that dictionary is called in my plist, so later I could use that name for objectForKey:dictionaryName.
So it'd give me my MyFirstEntry, then MySecondEntry, then Timmy.
Post: #5
If you apply the suggestions above to this code, you'll get the following
So you would be enumerating the keys, then getting the dictionary with the keys, and in this example you have the key in the variable named key.
Code:
NSEnumerator* keyList = [jobData keyEnumerator];
id groupKey;
while((groupKey = [keyList nextObject]))
{
NSString* key = (NSString *)groupKey;
NSDictionary* dict = [jobData objectForKey:key]
//Put this string in the job name...
//NSString* s = [dict stringValue];
//[groupName setStringValue:s];
//Put the job count up
int howManyJobs = [[dict objectForKey:@"jobList"] count];
if(howManyJobs != 1)
[groupJobCount setStringValue:[NSString stringWithFormat:@"%d jobs...", howManyJobs]];
else
[groupJobCount setStringValue:[NSString stringWithFormat:@"%d job...", howManyJobs]];
}So you would be enumerating the keys, then getting the dictionary with the keys, and in this example you have the key in the variable named key.
