Help with Table views and Alert Views

[narutov2]

hi I am new so I hope I am posting in the right section, I am a bit confused in what I am doing here, as I started learning about iphone sdk recently. I am working on a table view application where I want a different alert message given per item in my array. I am working base on one of the examples in http://www.amazon.com/Beginning-iPho.../dp/1430216263


I am using an array to store information for each cell in my table view application :
NSArray *array = [[NSArray alloc] initWithObjects:@"Academic Department", @"Administration",
@"Ball Room", @"Bearcat Louge", @"Board Room", @"Book Store", @"Cafeteria", @"Carey Louge",
@"Cis Computer Lab",@"Commuter Lounge", @"Financial Aid", @"Foundation Room", nil];


and I am trying to give an different alert string for each one: here is what I have so far:


NSUInteger row = [indexPath row];
NSString *rowValue =[listData objectAtIndex:row];

NSString *message = [[NSString alloc] initWithFormat:@"You selected %@",rowValue];
UIAlertView *alert = [[UIAlertView alloc]
// if("%@" =="Commuter Lounge")
initWithTitle:message message: alertmessage delegate:nil cancelButtonTitle:@"Go Back" otherButtonTitles:nil];



I was planning to use a string variable to store the actual message, which is the underlined part, but I am running into problems in comparing a array string to to a match, because I was planning to make a if comparison to each element in my array.

I was trying things like

if %@ == commuter lounge
then alertmessage= "commuter lounge is a place where commuters could stay for breaks"


But it isn't recognizing it. I am really not familiar with the language yet, so please feel free to suggest

[Domele]

"==" compares memory addresses. To compare the actual string, you need to use isEqualToString:. So:

if ([aString isEqualToString:anotherString]) {
}

[narutov2]

Originally Posted by Domele

"==" compares memory addresses. To compare the actual string, you need to use isEqualToString:. So:

if ([aString isEqualToString:anotherString]) {
}

thanks for the syntax hint, but I am getting warning and would crash with a error.

This is what I have

NSString *message = [[NSString alloc] initWithFormat:
@"You selected %@",rowValue];

if (["%@" isEqualToString:"Commuter Lounge"]) {
alertMessage = @"the string";
}

the warnings are "invalid receiver type char[3]" and "passing argument 1 of isequaltostring incompatible pointer type" which I think is because I am using %@ to compare and it isn't getting it

But the error I get when it crashes is "thread 1 program received signal ex bad access"

The reason I am using %@ in this program was that when you select a cell in the table view it will let say "you selected %@" and that %@ is replaced by something from the array I think. Is there a way I can compare the value selected from table view at all? Or is my approach wrong? or is there a different way to represent the value in the string compare?

[Domele]

Instead of %@ use message. %@ is a format specifier.