NSMutableDictionary Retrieve content

[vikinara]

Hi All

I have a NSMUtableDictionary which holds an key with a NSMutableArray of two objects in it, and another key with NSmutableArray of one object in it. How do I retrieve the contents from both the keys. Any help is appreciated.

This is what i have in log. personalvehicleDict:{
43 = (
"TempObject1",
"TempObject2"
);
56 = (
"TempObject3"
);
}

I want to retrieve data in TEmpObject1, TempObject2,TempObject3.
This is how i set the NSMutableDictionary. [personalvehiclepolicydict setObject: self.driverarray forKeyersonalvehiclepolicyattr];

[architectpianist]

At a glance,

MyObject *obj = [[personalVehicleDict objectForKey:@"43"] objectAtIndex:0];

[vikinara]

Originally Posted by architectpianist

At a glance,

MyObject *obj = [[personalVehicleDict objectForKey:@"43"] objectAtIndex:0];

Thanks for the reply.

Please find my code below. My attribute string is personalvehiclepolicyattr. The value @"43" cannpt be hard coded.


[personalvehiclepolicydict setObject: self.driverarray forKeyersonalvehiclepolicyattr];

TempObject *obj = [[TempObject alloc]init];

obj = [[personalvehiclepolicydict objectForKeyersonalvehiclepolicyattr]objectAtIndex:index];

If i do this i am get data for only one object in the first array. Please help to proceed with this.

[iisword]

Are both the keys and the objects unknown to you, do you know what the objects(value or class) will be and not the keys, or do you know what the keys will be and not the objects?

If you want to get all the objects out, use -allKeys(NSDictionary Method), put it in a for loop, and then -objectForKey:[allKeys objectAtIndex:x] and then additional code as need.

[iSDK]

You need to use :

- (void)enumerateKeysAndObjectsUsingBlock:(void (^)(id key, id obj, BOOL *stop))block

Loading…

[vikinara]

Originally Posted by iisword

Are both the keys and the objects unknown to you, do you know what the objects(value or class) will be and not the keys, or do you know what the keys will be and not the objects?

If you want to get all the objects out, use -allKeys(NSDictionary Method), put it in a for loop, and then -objectForKey:[allKeys objectAtIndex:x] and then additional code as need.

I dont know what the keys will be or what the objects will be. Both are dynamic. Please help me with this.

[vikinara]

Originally Posted by iSDK

You need to use :

- (void)enumerateKeysAndObjectsUsingBlock:(void (^)(id key, id obj, BOOL *stop))block

Loading…

Thank u for the reply. But I am not exactly sure how to use this piece of code. Can u please help me with some example.

[iisword]

Well I'm going to assume the dictionary has only NSMutableArrays in it(if not, you need to enumerate with

while(NSMutableArray *array in [dictionary objectEnumerator])
{
   for (int x = 0; x < [array count]; x++)
   {
       //do stuff
    }
}

)

All you have to do is get the keys ([dictionary allKeys]) then it's basicly a for loop within a for loop that does something with the object.

Note when making NSDictionaries, you should know at the minimum the class for object you just added so you can retrieve it and do something with it.

If you want iSDK way, look at this link where it shows an example of a block.

[dany_dev]

[dict enumerateKeysAndObjectsUsingBlock:^(id key, id object, BOOL *stop) {
  NSLog (@"Key: %@ for value: %@", key, object);
}];

or

id key, object;
 
NSArray *keys = [dict allKeys];
for (int i = 0; i <  [keys count] ; i++)
{
  key = [keys objectAtIndex: i];
  object = [dict objectForKey: key];
  NSLog (@"Key: %@ for value: %@", key, object);
}