Question

I have an iPhone App with a view which contains 2 buttons. I created these buttons in the Interface Builder.

Now I want to add a new button to the view programmatically:

- (void) addButton {
    //allocate the view
    self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];

    //set the view's background color
    self.view.backgroundColor = [UIColor whiteColor];

    //create the button
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    //set the position of the button
    //button.frame = CGRectMake(100, 10, 50,50);
    button.frame = CGRectMake(100, 100, 10,10);

    //set the button's title
    [button setTitle:@"Click Me!" forState:UIControlStateNormal];
    [button addTarget:self action:@selector(myButtonClick:) forControlEvents:(UIControlEvents)UIControlEventTouchDown];

    //add the button to the view
    [self.view addSubview:button];  
}

Done, and it works, however the other 2 buttons which were added in Interface Builder have disappeared. The new button is quite small and only covers a small bit of the view.

Could anyone tell me where my buttons are going to?

Answer 1

Why are you allocating another view? It will replace the old one and everything it contains.
Just create the button.