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iOS Build a Self-Destructing Message iPhone App Using Parse.com as a Backend and Adding Users Signing Up New Users: Part 1 (UIAlertView)

Posted by Jac Wynn
Jac Wynn
16,850 Points

UIAlertView not working

Could someone please tell me if I'm doing something wrong here. I feel like its a small syntax error but I can't seem to find it.

NumberGuesserViewController.h 
#import "UIViewController.h"
#import "UITextField.h"

@interface NumberGuesserViewController : UIViewController

@property (nonatomic, strong) IBOutlet
  UITextField *numberField;

- (IBAction)makeGuess:(id)sender;

@end
NumberGuesserViewController.m 
#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 = true) {
      UIAlertView *alertview = [UIAlertView alloc] initWithTitle:@"Hooray!" message:@"You did it!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];                                                                                               
    }   [alertView show];
}

@end

1 Answer

krittecha
krittecha
17,564 Points
krittecha
krittecha
17,564 Points

I'm not sure but I think this might help:

1) In "NumberGuesserViewController.h" The class should implement UIAlertViewDelegate:

@interface NumberGuesserViewController : UIViewController <UIAlertViewDelegate>

2) This is not wrong but I think you should show alertView only when the user's number is correct. So in NumberGuesserViewController.m, [alertView show]; should be inside the if-block

if (isCorrect = true) {
      UIAlertView *alertview = [[UIAlertView alloc] initWithTitle:@"Hooray!" message:@"You did it!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
      [alertView show];
}