How to Insert View in Superview's View? (iOS)

问题:

I have the line of code below... How would I modify it to insert the subview in the superview's view named 'foo'?

[[self superview] addSubview:copy3];

回答1:

There are more than 1 ways of doing this -

1.have an IBOutlet reference in your code. This is created from xcode Interface builder. Once you have this then it fairly straight forward -

[iboutlet_foo_object addSubview:copy3];

2.tag the view that you are interested in. Again tagging a view can be done from xcode Interface builder or from code. After that -

Foo *fooObj = [[self superview] viewWithTag:tagInt];
[fooObj addSubview:copy3];

3.Finally you can iterate through all the views in your superview & see which one is of type Foo -

NSArray *subviews = [[self superview] subviews];
for(UIView *v in subviews)
{
    if(v isKindOfClass:[Foo class])
    {
        [v addSubview:copy3];
        break;
    }
}

hope these methods help you...

回答2:

First make myView into a property of the superview Then use

[[[self superview] myView] addSubview:mySubview];

回答3:

First tag the view myView with a unique number:

myView.tag = 0x1234;

Then you can find it using viewWithTag:

[[[self superview] viewWithTag:0x1234] addSubview:mySubview];

回答4:

You might just actually add it to 'view' instead of 'superview'.

[[self view] addSubview:mySubview];

It works just fine for me, whenever I add subviews to my parent view. Let me know if something went wrong.