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app crash on the iphone simulator! please help

Discussion in 'iPhone/iPad Programming' started by ialjumeri, Jan 10, 2011.

  1. macrumors newbie

    Iam iphone developer learner, following tutorial was made for iphone 3.0 (just to let u know), and the iphone simulator on iphone 4.2.

    what is the issue?

    I am exactly following the book i am reading from (Sams Teach yourself iphone application in 24 hours)

    when I run the xcode .. the iphone simulator launched and the app crashed immediately before opening it..

    how to fix that?

    Here I am copying the code..

    ooh one more thing it gives me warning on


    massage saying " NSString 'may not respond to'-StringByReplacingOccrrencesOfString:withString"

    #import <UIKit/UIKit.h>

    @interface FiledButtonFun1ViewController : UITableViewController {
    IBOutlet UITextField *thePlace;
    IBOutlet UITextField *theVerb;
    IBOutlet UITextField *theNumber;
    IBOutlet UITextView *theStory;
    IBOutlet UITextView *theTemplate;
    IBOutlet UIButton * generateStory;

    @property (retain, nonatomic) UITextField *thePlace;
    @property (retain, nonatomic) UITextField *theVerb;
    @property (retain, nonatomic) UITextField *theNumber;
    @property (retain, nonatomic) UITextView *theStory;
    @property (retain, nonatomic) UITextView *theTemplate;
    @property (retain, nonatomic) UIButton * generateStory;




    #import "FiledButtonFun1ViewController.h"

    @implementation FiledButtonFun1ViewController

    @synthesize thePlace;
    @synthesize theVerb;
    @synthesize theNumber;
    @synthesize theStory;
    @synthesize theTemplate;
    @synthesize generateStory;

    -(IBAction)createStory:(id)sender {

    - (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.

    - (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;

    -(void)dealloc {
    [thePlace release];
    [theVerb release];
    [theNumber release];
    [theStory release];
    [theTemplate release];
    [generateStory release];
    [super dealloc];

  2. Moderator


    Staff Member

    Look very carefully at the NSString documentation. Is the method called StringByReplacingOccrrencesOfString:withString or stringByReplacingOccrrencesOfString:withString. Capitalisation of letters is important.
  3. macrumors newbie


    Correct spelling, along with capitalization, is important.
  4. Moderator


    Staff Member

    Oops. Copy and paste error on my part :eek:
  5. macrumors newbie

    Thanks, guys

    Yes, in ( stringByReplacingOccrrencesOfString:withString)

    the (s) in the beginning should be small.. I changed it and.. the warning was gone.. fixed


    the app still does not want to open .. is just trying to launch, but immediately closed...

    It seems a common problem for the beginner developer .. !

    I cannot go further in learning if this problem still exists..

  6. sdd
    macrumors newbie

    Download the books resources if you have not done so already and go into the folder which corrisponds to the tutorial your doing. In there you should see an Xcode project file. Click this and Xcode will open. Use the authors completed code to check your project code matches that. Also check you have connected the outlets and actions correctly in Interface Builder by opening the controller xib file. Use the document plane to see your existing configurations you have set in your File Owner.

    Sorry hard typing this on the iPhone
  7. macrumors 65816


    Errr, how bout, Cmd+shift+r.
    And show what's in there, or adding breakpoints etc.

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