8. As much as possible,
avoid displaying a splash
screen or other startup
experience. It’s best
when users can begin
using your app
immediately.
https://developer.apple.com/design/
9. People use gestures—such as tap, drag, and
pinch—to interact with apps and their iOS
devices.
https://developer.apple.com/design/
Tap To press or select a control or item.
Drag To scroll or pan—that is, move side to side.
To drag an element.
Flick To scroll or pan quickly.
Swipe With one finger, to return to the previous screen, to
reveal the hidden view in a split view controller, or the Delete
button in a table-view row. With four fingers, to switch
between apps on iPad.
10. https://developer.apple.com/design/
Double tap To zoom in and center a block of content or an
image.
To zoom out (if already zoomed in).
Double tap To zoom in and center a block of content or an
image. To zoom out (if already zoomed in).
Touch and hold In editable or selectable text, to display a
magnified view for cursor positioning.
Shake To initiate an undo or redo action.
11. A key color gives users a
strong visual indicator of
interactivity, especially
in apps that don’t use
an abundance of other
colors. In Contacts, blue
marks the interactive
elements and gives the
app a unified and
recognizable visual
theme.
https://developer.apple.com/design/
12. An icon or a title that
provides a clear call to
action invites users to
tap it. For example, the
titles in Maps, such as
“Flyover Tour” and
“Directions to Here,”
clearly describe actions
that users can take.
Combined with a key
color, actionable titles
tend to make button
borders or other
embellishments
superfluous.
https://developer.apple.com/design/
13. In a content area, add a
button border or
background only if
necessary. Buttons in
bars, action sheets, and
alerts don’t need
borders because users
know that most of the
items in these areas are
interactive. In a content
area, on the other hand,
a button might need a
border or a background
to distinguish it from the
rest of the content.
https://developer.apple.com/design/
14.
15. Incorporate a brand’s
assets in a refined,
unobtrusive way. People
use your app to get
things done or be
entertained; they don’t
want to feel as if they’re
being forced to watch
an advertisement.
https://developer.apple.com/design/
17. In general, use a single
font throughout your
app. Mixing several
different fonts can make
your app seem
fragmented and sloppy.
Instead, use one font
and just a few styles and
sizes.
https://developer.apple.com/design/
21. A collection view
manages an ordered
collection of items and
presents them in a
customizable layout.
https://developer.apple.com/design/
22. A map view presents
geographical data and
supports most of the
functionality provided
by the built-in Maps app
(shown below in
Photos).
https://developer.apple.com/design/
23. A popover is a transient
view that can be
revealed when people
tap a control or tap in an
onscreen area.
https://developer.apple.com/design/
24.
25. A split view controller is
a full-screen view
controller that manages
the presentation of two
child view controllers.
https://developer.apple.com/design/
26. A table view presents
data in a scrolling single-
column list of multiple
rows.
https://developer.apple.com/design/
27. A text view accepts and
displays multiple lines of
attributed text.
https://developer.apple.com/design/
28. A web view is a region
that can display rich
HTML content (shown
here between the
navigation bar and
toolbar in Mail on
iPhone).
https://developer.apple.com/design/
