Difference between addSubview and insertSubview in UIView class

Question

What is the difference between addSubview and insertSubView methods when a view is added programmatically?

score 104 · Accepted Answer · edited Dec 06 '11 at 08:41

104

The only difference is in where the view is added: whether it is the frontmost view (addSubview:), or it is before the 5th subview, (insertSubview:atIndex:) or if it is immediately behind another subview (insertSubview:aboveSubview:).

edited Dec 06 '11 at 08:41

pablasso

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answered Oct 05 '09 at 11:18

mahboudz

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score 47 · Answer 2 · answered Oct 05 '09 at 10:10

47

Using insertSubView: you can specify the index, which determines z-order of views. A view with a higher index lies above those with lower indices.

answered Oct 05 '09 at 10:10

Nikolai Ruhe

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Thanks, I wanted to is there specific difference in uses of these two functions – Ashwani K Oct 05 '09 at 10:30
1

Aside from the specific difference I described in my answer, there is none. – Nikolai Ruhe Oct 05 '09 at 16:41

score 29 · Answer 3 · answered Oct 05 '09 at 11:10

29

I don't think there is a difference. addSubview: is simple a convenient method for

[view insertSubview:aView atIndex:[view.subviews count]]

answered Oct 05 '09 at 11:10

sliver

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score -1 · Answer 4 · edited Jan 23 '16 at 11:48

1.addSubview add subview in array then add in View'slayer

- (void)addSubview:(UIView *)subview
{
    [_subviews addObject:subview];
    [_layer addSublayer:subview.layer];
}

}

2.While insertSubview add your view as subview then call [_layer insertSublayer:subview.layer atIndex:index];

- (void)insertSubview:(UIView *)subview atIndex:(NSInteger)index
{
  [self addSubview:subview];
  [_layer insertSublayer:subview.layer atIndex:index];
}

Difference between addSubview and insertSubview in UIView class

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