Moving around the subview tree.

Screen, controller, and root_view

find.screen  # alias to find.view_controller
find.root_view # View of the view_controller

Window of the root_view


All subviews, subviews of subviews, etc for root_view:



Find all children/grandchildren/etc:

find(my_view).find  # Different from children as it keeps on going down the tree

More commonly, you are searching for something:



Closest is interesting, and very useful. It searches through parents/grandparents/etc and finds the first occurrence that matches the selectors:


Let's say that someone clicked on a button in a table cell. You want to find and disable all buttons in that cell. So first you need to find the cell itself, and then find all buttons for that cell, then let's say we want to hide them. You'd do that like so:


Children of selected view, views, or root_view

find.children  # All children (but not grandchildren) of root_view
find(:section).children  # All children of any view with the tag or stylename of :section

You can also add selectors

find(:section).children(UILabel)  # All children (that are of type UILabel of any view with the tag or stylename of :section

Parent or parents of selected view(s)

find(my_view).parent # superview of my_view
find(my_view).parents # superview of my_view, plus any grandparents, great-grandparents, etc
find(UIButton).parent # all parents of all buttons


Find all your siblings:

find(my_view).siblings # All children of my_view's parent, minus my_view)

Get the sibling right next to the view, below the view:


Get the sibling right next to the view, above the view:


And, not, back, and self

These four could be thought of as Selectors, not Traversing. They kind of go in both, anywho.

By default selectors are an OR, not an AND. This will return any UILabels and anything with text == '':

find(UILabel, text: "") # This is an OR

So if you want to do an and, do this:

find(UILabel).and(text: "")

Not works the same way:

find(UILabel).not(text: "")

Back is interesting, it moves you back up the chain one. In this example, we find all images that are inside test_view. Then we tag them as :foo. Now we want to find all labels in test_view and tag them :bar. So after the first tag, we go back up the chain to test_view, find labels, then tag them :bar:



Filter is what everything else uses (parents, children, find, etc), you typically don't use it yourself.