Computer Network Router User Manual

CHAPTER 4
Pickers
List Pickers 4-9
Figure 4-6 How a list picker should align with its label or button
If you want your application to work when a user rotates the display (with
the Extras Drawer’s Rotate button), your application may need to make
picker alignment dependent on screen size.
Using a List Picker 4
A user makes a list picker pop up by tapping the button or label that controls
it. While the picker is open, the application highlights the picker’s controlling
button or label. Nothing else happens until the user touches the screen again.
The user does not have to press and hold the pen on the button or label to
keep the picker open; the picker stays open until the user touches the screen
again. If the user touches the screen outside the list, the picker goes away.
Picking an Item 4
A user picks an item listed in a list picker by tapping the item. The picked
item blinks briefly, the picker disappears, and the action or effect associated
with the picked item happens. Figure 4-7 shows the sequence of events for
the Set button in the built-in Clock application.
Best—picker next to its label or
button and aligned at top or bottom
Avoid—picker and its label or button
misaligned, or picker completely
covering its label or button
OK—wide picker
above or below its
label or button
Button hidden
behind picker