Hello -
I am new to iphone and objective-c etc.
Here is some code I wrote for the appdelegate to initialize some
dictionaries and arrays:
My main question has to do with memory and releasing it. In my app I
will need listOfMonthNames for my popups
and will also need dictionaryOfProduceTypes to populate other
dependent popups.
thanks
James
-(void)initializeArraysAndDictionaries {
if(!listOfMonthNames){
NSArray *listOfMonthNamesTmp = [[NSArray alloc] initWithObjects:
@"January
",@"February
",@"March
",@"April
",@"May
",@"June
",@"July",@"August",@"September",@"October",@"November",@"December"];
// enumerate over items
printf( "----static array\n" );
[listOfMonthNames
arrayByAddingObjectsFromArray:listOfMonthNames2];
// free memory
[listOfMonthNamesTmp release];
}
if(!dictionaryOfProduceTypes){
// Create a distinct dictionary of types that hold an array of
subtypes per type.
// Types and subtypes are attributes of the ProduceItem object
dictionaryOfProduceTypes = [[NSMutableDictionary alloc] init];
NSEnumerator *en = [produceItems objectEnumerator];
ProduceItem *item = nil;
while (item = [en nextObject]) {
if(![dictionaryOfProduceTypes objectForKey:item.type]){
//Doesn't exist yet, so allocate and initialize
[dictionaryOfProduceTypes takeValue:[[NSMutableArray alloc] init]
forKey:item.type];
}
NSMutableArray *subtypes = [dictionaryOfProduceTypes
objectForKey:item.type];
//Get the array then iterate through to see if we need to add a new
subtype to be added
NSEnumerator *en2 = [subtypes objectEnumerator];
NSString *subtype = nil;
BOOL found = FALSE;
while (subtype = [en2 nextObject]) {
if([subtype compare:item.subtype]){
found = TRUE;
break;
}
}
if(!found){
[subtypes addObject:item.subtype];
}
[dictionaryOfProduceTypes takeValue:subtypes
forKey:item.type];
[subtypes release];
}
[dictionaryOfProduceTypes release];
}
}
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