Question

Sorry if it is not a standard question, but now your solutions can help me out. In my app, I have two classes: ClassA and ClassB. ClassB has a table view in it. I am using a query to populate the table view in ClassB, but the column name through which I have to query is what I get from ClassA, which I want to pass to ClassB and to perform the query and populate the table view. Can I pass a parameter to viewDidLoad or viewWillAppear? These get called when the view loads. Or is there any other method to do so?

Answer 1

Why don’t you declare a property for that?

@interface ClassB:...

@property (nonatomic, copy) NSString * columnName

@end

and synthesize it in the implementation.

When you are creating ClassB instance from ClassA then do this,

ClassB * classB = [[ClassB alloc] initWithNibName:.. bundle:..];
classB.columnName = theColumnName;
[self pushViewController:classB animated:YES];
[classB release];

Make use of this parameter in viewDidLoad.