How to set a NSString in a class from a uitextfield from a viewcontroller

I am tying to set NSString *receiveCodeText; thats in an object with a uitextfiled value thats in my viewcontroller from my v开发者_JAVA百科iewcontroller inside tableView:didSelectRowAtIndexPath: however I am getting an error

/Users/imac/Documents/Iphone applications/tables/Classes/RootViewController.m:198:0 /Users/imac/Documents/Iphone applications/tables/Classes/RootViewController.m:198: error: accessing unknown 'setReceiveCodeText:' class method

/Users/imac/Documents/Iphone applications/tables/Classes/RootViewController.m:198:0 /Users/imac/Documents/Iphone applications/tables/Classes/RootViewController.m:198: error: object cannot be set - either readonly property or no setter found

here is my code and how I am trying to pass the text.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    searchTableViewController *searchTable = [[searchTableViewController alloc] initWithNibName:@"searchTableViewController" bundle:nil];

    switch (indexPath.row) {
        case 1: {
            searchTable.editedFieldName = @"Make";
            //Pass code number over to DBAccess class
            DBAccess.receiveCodeText = self.codeText.text;
        } break;
        case 2: {
            searchTable.editedFieldName = @"Model";
        } break;
        case 3: {
            searchTable.editedFieldName = @"Year";
        } break;
    }

    [self.navigationController pushViewController:searchTable animated:YES];
    [searchTable release];
}

DBAccess is a class. Unless setRecieveCodeText: is a class method, you can't use it directly. Properties belong to the instance rather than the class so you will have to declare class methods and use a static variable to handle this. However it makes sense to instantiate and then use that object or even using a singleton if you want to avoid multiple instances of the same class. A singleton should be available for use across classes.

I've included code related to the class method approach.

@interface DBAccess: NSObject {
}

+ (NSString *)receiveCodeText;
+ (void)setReceiveCodeText:(NSString *)code;
[..]
@end

In the .m file,

static NSString * receiveCodeText;

@implementation DBAccess
[..]
+ (NSString *)receiveCodeText {
    return receiveCodeText;
}

+ (void)setReceiveCodeText:(NSString *)code {
    [receiveCodeText autorelease];
    receiveCodeText = [code copy];
}
[..]
@end