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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)

Devin Scheu
Devin Scheu
66,191 Points
Posted by Devin Scheu
Devin Scheu
66,191 Points

IOS Help

Question: 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.

Code:

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 = YES) {
      UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Hooray!"
                                                    message:@"You did it!"
                                                    delegate:nil
                                                    cancelButtonTitle:@"OK"
                                                    otherButtonTitles:nil];
    }
}

@end
Kailin Huang
Kailin Huang
Courses Plus Student 5,483 Points

Hello, be careful with the syntax in your IF statement. Should be: if (isCorrect == YES). Also dont't forget to show your UIAlertView after you declare it, [alertView show];

2 Answers

kayladu
kayladu
105 Points
kayladu
kayladu
105 Points

Here is what i did. But it was still not right. WHY??

import "NumberGuesserViewController.h"

import "GuessEngine.h"

import "UIAlertView.h"

@implementation NumberGuesserViewController

  • (IBAction)makeGuess:(id)sender { NSString *userNumber; 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]; [alertView show]; } } @end

kayladu
kayladu
105 Points
kayladu
kayladu
105 Points

there were # before import above..

Who can help?