title: received memory warning. level 1
body: <p>I am new to iPhone development. I am creating an application in which i need to create buttons and labels programmatically.<br>
  So I am doing this in .h file</p>
  
  <pre><code>@interface FirstQuizViewControlleriPad : UIViewController{
  
  IBOutlet UIButton *startgame;
  UILabel *theQuestion;
  IBOutlet UIScrollView *scrollview;
  UILabel *Question;
  UILabel *Description;
  UIView *ContainerView;
  UILabel *Challengetext;
  UIImageView *img1;
  UIImageView *img2;
  UIImageView *background;
  IBOutlet UIButton *reviewbtn;
  UILabel *ans1;
  UILabel *ans2;
  UILabel *ans3;
  UILabel *ans4;
  
  UIButton *button;
  UIButton *button2;
  UIButton *button3;
  UIButton *button4;
  UILabel *rightans;
  UILabel *theScore;
  UIButton *nextbtn;
  UIButton *backbtn;
  NSString *setchallange;
  
  AVAudioPlayer *AVback;
  AVAudioPlayer *AVstart;
  NSArray *theQuiz;
  NSInteger questionNumber;
  NSInteger rightAnswer;
  NSInteger myScore;
  NSInteger finalScoreipad1;
  BOOL restartGame;
  id QuestionReview;
  
  }
  
  @property (retain , nonatomic) IBOutlet UIButton *startgame;
  @property (retain , nonatomic) NSArray *theQuiz;
  @property (retain , nonatomic) IBOutlet UILabel *theScore;
  @property (retain , nonatomic) IBOutlet UIButton *nextbtn;
  @property (retain , nonatomic) IBOutlet UIScrollView *scrollview;
  @property (retain , nonatomic) IBOutlet UIButton *backbtn;
  @property (retain , nonatomic) IBOutlet UILabel *Challengetext;
  @property (retain , nonatomic) IBOutlet UIImageView *img1;
  @property (retain , nonatomic) IBOutlet UIImageView *img2;
  @property (retain , nonatomic) id QuestionReview;
  @property (retain , nonatomic) IBOutlet UIButton *reviewbtn;
  @property (retain ,nonatomic) IBOutlet UIButton *button;
  @property (retain ,nonatomic) IBOutlet UIButton *button2;
  @property (retain ,nonatomic) IBOutlet UIButton *button3;
  @property (retain ,nonatomic) IBOutlet UIButton *button4;
  @property (retain ,nonatomic) IBOutlet UILabel *ans1;
  @property (retain ,nonatomic) IBOutlet UILabel *ans2;
  @property (retain ,nonatomic) IBOutlet UILabel *ans3;
  @property (retain ,nonatomic) IBOutlet UILabel *ans4;
  @property (retain , nonatomic) IBOutlet UILabel *Question;
  @property (retain , nonatomic) NSString *setchallange;
  
  -(void)askQuestion;
  </code></pre>
  
  <p>in .m file  </p>
  
  <pre><code>questionNumber = questionNumber + 1;
  NSInteger row = 0;
  if(questionNumber == 1)
  {
      row = questionNumber - 1;
  }
  else
  {
      row = ((questionNumber - 1) * 10);
  }
  
  NSString *selected = [theQuiz objectAtIndex:row];
  NSString *activeQuestion = [[NSString alloc] initWithFormat:@"%@", selected];
  QuestionReview = activeQuestion;
  
  //lbl ref to btn1
  ans1 = [[[UILabel alloc] initWithFrame:CGRectMake(36, 292, 697, 100)] autorelease];
  ans1.numberOfLines = 0;
  ans1.font = [UIFont systemFontOfSize:26];
  ans1.text = [theQuiz objectAtIndex:row+1];
  ans1.lineBreakMode = UILineBreakModeWordWrap;
  [ans1 sizeToFit];
  [self.view addSubview:ans1];
  //lbl ref to btn2
  ans2 = [[[UILabel alloc] initWithFrame:CGRectMake(36, 312 + ans1.frame.size.height , 697, 100)] autorelease];
  ans2.numberOfLines = 0;
  ans2.font = [UIFont systemFontOfSize:26];
  ans2.text = [theQuiz objectAtIndex:row+2];
  ans2.lineBreakMode = UILineBreakModeWordWrap;
  [ans2 sizeToFit];
  [self.view addSubview:ans2];
  //lbl ref to btn3
  ans3 = [[[UILabel alloc] initWithFrame:CGRectMake(36 ,332 + ans1.frame.size.height + ans2.frame.size.height , 697 , 100)] autorelease];
  ans3.numberOfLines = 0;
  ans3.font = [UIFont systemFontOfSize:26];
  ans3.text = [theQuiz objectAtIndex:row+3] ;
  ans3.lineBreakMode = UILineBreakModeWordWrap;
  [ans3 sizeToFit];
  [self.view addSubview:ans3];
  //lbl ref to btn4
  ans4 = [[[UILabel alloc] initWithFrame:CGRectMake(36, 352 + ans1.frame.size.height + ans2.frame.size.height + ans3.frame.size.height, 697, 100)] autorelease];
  ans4.numberOfLines = 0;
  ans4.font = [UIFont systemFontOfSize:26];
  ans4.text = [theQuiz objectAtIndex:row+4];
  ans4.lineBreakMode = UILineBreakModeWordWrap;
  [ans4 sizeToFit];
  [self.view addSubview:ans4];
  
  rightAnswer = [[theQuiz objectAtIndex:row+5] intValue];
  
  Question = [[[UILabel alloc] initWithFrame:CGRectMake(22, 130, 725, 160)] autorelease];
  Question.numberOfLines = 0;
  //Question.font = [UIFont systemFontOfSize:27];
  Question.text = activeQuestion;
  Question.lineBreakMode = UILineBreakModeWordWrap;
  [Question setFont:[UIFont fontWithName:@"Futura" size:26]];
  Question.backgroundColor = [UIColor clearColor];
  [Question sizeToFit];
  [self.view addSubview:Question];
  
  //For 1st Option.
  button = [UIButton buttonWithType:UIButtonTypeCustom];
  [button addTarget:self 
             action:@selector(buttonOne)
   forControlEvents:UIControlEventTouchDown];
  button.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
  button.titleLabel.font = [UIFont systemFontOfSize:24];
  [button setTitle:[theQuiz objectAtIndex:row+1] forState:UIControlStateNormal];
  [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button.frame = CGRectMake(34, 200 + Question.frame.size.height , 700, ans1.frame.size.height + 20);
  [self.view addSubview:button];
  button.layer.borderWidth = 3;
  button.layer.borderColor = [[UIColor purpleColor ] CGColor];
  button.layer.cornerRadius = 10.0;
  [button setBackgroundImage:[UIImage imageNamed:@"buttun.png"] forState:UIControlStateNormal];
  button.titleEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5);
  
  //For 2nd Option.
  button2 = [UIButton buttonWithType:UIButtonTypeCustom];
  [button2 addTarget:self 
              action:@selector(buttonTwo)
    forControlEvents:UIControlEventTouchDown];
  [button2 setTitle:[theQuiz objectAtIndex:row+2] forState:UIControlStateNormal];
  [button2 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button2.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
  button2.titleLabel.font = [UIFont systemFontOfSize:24];
  button2.frame = CGRectMake(34, 230 + Question.frame.size.height + button.frame.size.height , 700, ans2.frame.size.height + 20);
  button2.layer.borderWidth = 3;
  button2.layer.borderColor = [[UIColor darkGrayColor ] CGColor];
  button2.layer.cornerRadius = 10.0;
  [self.view addSubview:button2];
  [button2 setBackgroundImage:[UIImage imageNamed:@"buttun2.png"] forState:UIControlStateNormal];
  button2.titleEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5);
  
  //For 3rd Option.
  button3 = [UIButton buttonWithType:UIButtonTypeCustom];
  [button3 addTarget:self 
              action:@selector(buttonThree)
    forControlEvents:UIControlEventTouchDown];
  [button3 setTitle:[theQuiz objectAtIndex:row+3] forState:UIControlStateNormal];
  [button3 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button3.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
  button3.titleLabel.font = [UIFont systemFontOfSize:24];
  button3.frame = CGRectMake(34, 260 + Question.frame.size.height + button.frame.size.height + button2.frame.size.height , 700, ans3.frame.size.height + 20);
  button3.layer.borderWidth = 3;
  button3.layer.borderColor = [[UIColor purpleColor ] CGColor];
  button3.layer.cornerRadius = 10.0;
  
  [self.view addSubview:button3];
  [button3 setBackgroundImage:[UIImage imageNamed:@"buttun.png"] forState:UIControlStateNormal];
  button3.titleEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5);
  
  //For 4th Option.
  button4 = [UIButton buttonWithType:UIButtonTypeCustom];
  [button4 addTarget:self 
              action:@selector(buttonFour)
    forControlEvents:UIControlEventTouchDown];
  [button4 setTitle:[theQuiz objectAtIndex:row+4] forState:UIControlStateNormal];
  [button4 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button4.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
  button4.titleLabel.font = [UIFont systemFontOfSize:24];
  button4.frame = CGRectMake(34, 290 + Question.frame.size.height + button.frame.size.height + button2.frame.size.height + button3.frame.size.height , 700, ans4.frame.size.height + 20);
  button4.layer.borderWidth = 3;
  button4.layer.borderColor = [[UIColor darkGrayColor ] CGColor];
  button4.layer.cornerRadius = 10.0;
  [self.view addSubview:button4];
  [button4 setBackgroundImage:[UIImage imageNamed:@"buttun2.png"] forState:UIControlStateNormal];
  button4.titleEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5);
  
  NSString *strright = [theQuiz objectAtIndex:row+7];
  NSString *strtext = [[NSString alloc] initWithFormat:@"%@" , strright];
  
  rightans = [[UILabel alloc] initWithFrame:CGRectMake(50, 330, 650, 150)];
  rightans.numberOfLines = 0;
  rightans.text = strtext;
  rightans.backgroundColor = [UIColor clearColor];
  rightans.font = [UIFont systemFontOfSize:26];
  [self.view addSubview:rightans];
  [rightans sizeToFit];
  [rightans setHidden:YES];
  
  //Description.
  NSString *des = [theQuiz objectAtIndex:row+6];
  NSString *destext = [[NSString alloc] initWithFormat:@"\n&gt; Explanation :\n%@\n\n" , des];
  
  Description = [[[UILabel alloc] initWithFrame:CGRectMake(40, 400 + rightans.frame.size.height , 690, 150)] autorelease];
  Description.numberOfLines = 0;
  // Description.font = [UIFont systemFontOfSize:13.5];
  Description.text = destext;
  [Description setFont:[UIFont fontWithName:@"Futura" size:26]];
  Description.lineBreakMode = UILineBreakModeWordWrap;
  Description.backgroundColor = [UIColor clearColor];
  [Description sizeToFit];
  [self.view addSubview:Description];
  [Description setHidden:YES];
  
  
  ContainerView = [[UIView alloc] initWithFrame:CGRectMake(30, 400 + rightans.frame.size.height , 700 ,Description.frame.size.height)];
  ContainerView.backgroundColor = [UIColor clearColor];
  ContainerView.layer.cornerRadius = 10.0;
  ContainerView.layer.borderColor = [[UIColor grayColor] CGColor];
  ContainerView.layer.borderWidth = 3;
  // [ContainerView addSubview:Description];
  [self.view addSubview:ContainerView];
  [ContainerView setHidden:YES];
  
  //For Challenge Text
  NSString *challange = [theQuiz objectAtIndex:row+8];
    setchallange = [[NSString alloc] initWithFormat:@"%@" , challange];//Memory leak here
   Challengetext.text = setchallange;
  
  
  
  //Image For Every Challenge
  background = [[[UIImageView alloc] initWithFrame:CGRectMake(15.0f, 15.0f, 130.0f, 110.0f)] autorelease];
  [background setImage:[UIImage imageNamed:[theQuiz objectAtIndex: row + 9]]];
  [self.view addSubview:background];
  </code></pre>
  
  <p>In dealloc function , I release all the labels and buttons and other objects that i have created but still i got this warning for memory leakage (received memory warning level 1 and some times level 2)<br>
  I searched where my memory is being leaked and it is leak at NSString <strong>setchallenge</strong>  </p>
  
  <p>Please help me out this..<br>
  Any help will be appreciated..  </p>
  
  <p>Thanks..</p>