Graphics Programs Reference
In-Depth Information
bring up its connection panel. Then drag from the circle by the instance variable to the ob-
ject you want it to point to. The arrows in
Figure 5.4
show the direction to drag when
making connections.
Figure 5.4 Whereami XIB layout
Notice that you made five connections. Three of those connections are from the
File's
Owner
to the
UIActivityIndicatorView
,
MKMapView
and
UITextField
. The
other two connections are from the
UITextField
and
MKMapView
to the
File's Own-
er
.
The direction of the connection is the same as the direction in which messages are sent.
Therefore, these connections allow the
WhereamiViewController
to send messages
to the activity indicator, the map view, and the text field and allow the text field and the
map view to send messages back to the
WhereamiViewController
.
