Checking if word is valid in array - iphone

Question

I am using code to check if a word is in my array, if it is I want it to submit it and I have the code for it. If it isn't I want it to pop up a screen. now this all works, the only thing is the screen pops up 2 times, because there are 2 words in my array. here is the code to explain it a little better.
NSArray *searchContacts = [NSArray arrayWithObjects:
#"CADEAU",
#"KADERZ",nil];
NSString *myContact = labelsText.text;
for (NSString *contact in searchContacts) {
if ([contact isEqualToString:myContact]) {
this is where I put in my words, CADEAU & KADERZ in this case. When I put one of these words into labelsText.text it does exactly what I want. but for the else statement if the labels text.text word is not CADEAU or KADERZ, it pop ups a screen:
else {
UIAlertView *alert = [[UIAlertView alloc]
This screen will pup up 2 times now, so i'll have to press dismiss 2 times, how would I fix this to just have to press dismiss one time no mather how many words are in the array?

Answer 1

It would be more efficient to use an NSSet, but even if you use an NSArray, you can simply call containsObject: instead of looping through the collection yourself.
if (![searchContacts containsObject:myContact]) {
//show alert...
}

Answer 2

Put a break; after the code showing your alert:
for (NSString *contact in searchContacts) {
if ([contact isEqualToString:myContact]) {
// do something
} else {
// show screen
break;
}
}
This will 'break' out of the loop.

Answer 3

I think you want something like this:
BOOL contactFound = NO;
for (NSString *contact in array)
{
if ([contact isEqualToString:myContact])
{
contactFound = YES;
break;
}
}
if (!contactFound)
UIAlertView *alert = [[UIAlertView alloc]...

Answer 4

Use a break after your UIAlertView.
For example:
for (NSString *contact in searchContacts) {
if ([contact isEqualToString:myContact]) {
//do what you want to do
}
else{
UIAlertView *alert = [[UIAlertView alloc] init];
[alert show];
break; //leave for()
}
}
Or use that:
searchContacts enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if ([contact isEqualToString:myContact]) {
//do what you want to do
}
else{
UIAlertView *alert = [[UIAlertView alloc] init];
[alert show];
*stop = YES; //stop enumeration
}
}