Using object declared in a method in another implementation in another file?

I have a tableview method:

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

that declares: NSInteger row = [indexPath row]; with the above method in the file TableView.m and I want to use the value of 'row' in another file开发者_StackOverflow社区 called SecondView.m and I do not know how to allow the value of row to be used in the other file and make it public for the whole project to us it - I want to use it in an if statement in another file.

Thanks a lot!

If the scope of the variable you want to use is limited to inside one of your methods, you cannot use it outside.

You'll have to make it a member variable and query it from an instance of the class.

@interface MyTable{
  NSInteger row;   //Member variable
}
@property (nonatomic, assign) NSInteger row; //Making it a property allows it to be accessed from other classes
@end
...
@implementation
@synthesize row; //Used in conjunction with @property
....
- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ...
    row = [indexPath row]; //sets the variable you want to use
    ...
}
....
@end

other class:

[myTable row];  //Use the variable