UIButton click event crash after adding the viewcontroller's view as a sub view

Question

I want to add several ViewController's views as sub views of my another viewcontroller. So I have done like this inside my parent viewController.

-(void)MakeDisplayArea
{
vwDisplayArea=[[UIView alloc] initWithFrame:CGRectMake(0, 0, w, h-scrolTab.frame.size.height)];

[self.view addSubview:vwDisplayArea];
}





-(void)ProfClick :(id)sender

{

    [self MakeDisplayArea];
    ProfileViewController *profviewcontroller=[[ProfileViewController alloc] initWithNibName:@"ProfileViewController" bundle:nil];
    profviewcontroller.view.frame=vwDisplayArea.frame;
    [profviewcontroller.view setBackgroundColor:[UIColor clearColor]];
    [vwDisplayArea addSubview:profviewcontroller.view];

}

Then inside the profViewcontroller ViewDidLoad methods I am generating a button and set the target like this.

UIButton *btn=[[UIButton alloc] initWithFrame:CGRectMake(10, 60, 100, 30)];
[btn setTitle:@"Button Test" forState:UIControlStateNormal];
[self.view addSubview:btn];
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];

-(IBAction)btnClick :(id)sender
   {

      NSLog(@"button clicked-------");
   }

I can see the button is appearing on that profViewcontroller that I loaded as a sub view, but when I click the button the app is crashing. What is the correct way add that viewcontroller as a subview on my first viewcontroller. Please help me.

Thanks

Read the docs in `UIViewController` about implementing a container view controller. You need to add the child view controllers in addition to adding the subviews. — rmaddy, Aug 05 '15 at 05:03

score 0 · Answer 1 · answered Aug 05 '15 at 10:34

0

Like maddy said you need child view controllers to add working subviews.

Look here: Creating Custom Container View Controllers

But working with them is not easy. Ask yourself if you really need to implement it. For the most cases you don't need it.

answered Aug 05 '15 at 10:34

Jonas

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UIButton click event crash after adding the viewcontroller's view as a sub view

1 Answers1