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Chelsea C.
Full Stack JavaScript Techdegree Student 3,392 PointsCode Challenge 3 of 4 - Build a Self-Destructing Message App - Trouble
I keep getting a compilation error. Where did I go wrong? I'm in the NumberGuesserViewController.m. The question is:
If the guess is correct, we want to alert the user with a message using a UIAlertView. Add an if statement that checks if the BOOL variable 'isCorrect' is true (or 'YES'). Inside the if statement, declare a new UIAlertView variable named 'alertView'. Alloc/init it with the method 'initWithTitle:message:delegate:cancelButtonTitle:otherButtonTitles'. For the title, use "Hooray!", for the message, use "You did it!", for the delegate use nil, for cancelButtonTitle use "OK", and for otherButtonTitles use nil.
#import "UIViewController.h"
#import "UITextField.h"
@interface NumberGuesserViewController : UIViewController
@property (nonatomic, strong) IBOutlet UITextField *numberField;
- (IBAction)makeGuess:(id)sender;
@end
#import "NumberGuesserViewController.h"
#import "GuessEngine.h"
#import "UIAlertView.h"
@implementation NumberGuesserViewController
- (IBAction)makeGuess:(id)sender {
NSString *userNumber = self.numberField.text;
if (isCorrect == YES){
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Hooray!"
message:@"You did it!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
}
// Check to see if the user's number is correct
@end
3 Answers
Stone Preston
42,016 Pointsyou removed one line that was added automatically
// Check to see if the user's number is correct
BOOL isCorrect = [GuessEngine testGuess:userNumber];
since you removed it, the code that checks the users guess throws an error since isCorrect did not exist.
you need to add that back in and put your code below it:
#import "NumberGuesserViewController.h"
#import "GuessEngine.h"
#import "UIAlertView.h"
@implementation NumberGuesserViewController
- (IBAction)makeGuess:(id)sender {
NSString *userNumber = self.numberField.text;
// Check to see if the user's number is correct
BOOL isCorrect = [GuessEngine testGuess:userNumber];
if (isCorrect == YES){
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Hooray!"
message:@"You did it!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
}
}
@end
Stone Preston
42,016 Pointslooks like you are missing the closing } for the method. try adding it in
#import "NumberGuesserViewController.h"
#import "GuessEngine.h"
#import "UIAlertView.h"
@implementation NumberGuesserViewController
- (IBAction)makeGuess:(id)sender {
NSString *userNumber = self.numberField.text;
if (isCorrect == YES){
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Hooray!"
message:@"You did it!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
}
// Check to see if the user's number is correct
} // you were missing this bracket
@end
Chelsea C.
Full Stack JavaScript Techdegree Student 3,392 PointsStone Preston,
Nope. Doesn't work. :(
Chelsea C.
Full Stack JavaScript Techdegree Student 3,392 PointsThat was it - thanks!