Question

I was looking up how to create a view programmatically and found the following example code:

self.view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

This works great, except I don’t like that it hardcodes the size of the screen. Is there a way to look up the size of the screen? An important point someone brought up is that if the app is running during a phone call then the screen will be slightly smaller because of the green “return to call” bar.

Answer 1

Is there a way to look up the size of
the screen?

Yup:

CGRect screenRect = [[UIScreen mainScreen] applicationFrame];

applicationFrame

This property
contains the screen bounds minus the
area occupied by the status bar, if it
is visible. Using this property is the
recommended way to retrieve your
application’s initial window size. The
rectangle is specified in points.