Computer Network Router User Manual

CHAPTER 4
Pickers
4-16 Number Picker
Number Picker 4
A number picker displays a number that a user can change by tapping the
digits of the number itself. The digits are large and are split into top and
bottom halves to make them easy for users to target. Tapping the top half of
a digit increases it, and tapping the bottom half of a digit decreases it.
Designed initially to replicate the old “mechanical digital” alarm clocks, the
look of the number picker evolved so that only the flipping digits remain.
Figure 4-12 shows an example number picker.
Figure 4-12 A number picker simplifies specifying a numerical value
Like a list picker, a number picker pops up when a user taps its label, which
begins with a diamond. Because a user may have to tap several times to
specify a number, a number picker has a Close box. Tapping the Close box
confirms the specified number and makes the picker go away. A user can
cancel and close the picker by tapping anywhere outside it.
Specialized number pickers for specifying dates and times are used in other
pickers described in the next two sections.
Tapping the top of a
digit increases it
T
apping the bottom
o
f a digit decreases it