Question

In my iPhone/iPad app,

I am adding one subview to my main view.

This subview has one imageview and button.

When to release them ?

My code is here,

 customAlertView=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 600, 600)];


         UIImageView *imgv=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"celebration.png"]];

          UIButton *btnOK=[UIButton buttonWithType:UIButtonTypeCustom];

         [btnOK setTitle:@"OK" forState:UIControlStateNormal];
         [btnOK addTarget:self action:@selector(alertOKClicked) forControlEvents:UIControlEventTouchUpInside];

         [customAlertView addSubview:btnOK];
         [customAlertView addSubview:imgv];
         [self.view addSubview:customAlertView];

         [imgv release];
         [btnOK release];



In one another method I am writing the code.

  [customAlertView removeFromSuperview];

My confusion is imageview and button is there If

1. I release the customalertview here will it releases its subviews automatically.
   If yes then no problem.

2. If NO how to release it

   as I have done here released the objects immediately after adding subviews.
   It will cause my OK button Unworthy. And will not affect the button click.

   So, On removing from superview should I write.

[[customalertview subviews] release];

Answer 1

Your code is correct.

You release them after you’ve added them to the alert view, as the alert view takes care of retaining them. When you call removeFromSuperview, it’ll get released automatically.