PlatformComparisonLindquist1Apr2013x - Tim Lindquist

Native Platform API

Comparison





by:


Dr. Tim Lindquist










April 2, 2013

Cst594 Mobile Computing

Platforms

•
iOS

•
Android

•
Windows Phone


iPhone App Runtime Layers

iOS

•
ARM processor (as with Android) running
iOS
,
which is a trimmed version of OS X.

•
Objective
-
C runtime consists of dynamically
-
linked libraries together with underlying C libs.

•
Devices have 3
-
sensors

–
Proximity sensor deactivates the display

–
Ambient light sensor for display intensity

–
3
-
axis accelerometer sensor for orientation

iOS

Layers

Cocoa Touch

•
Multi
-
tasking
:

–
Home


Background, (running but not executing)

–
Relaunch



API support to save/restore state

–
App can support services requiring background
execution

–
App can use notifications to alert the user

–
Notification source:
local

(
gps



time to turn) or
remote

(external server pushes mail notification)


Cocoa Touch

•
Game Kit

–
Peer
-
to
-
peer connectivity over
bluetooth

for:

•
Multi
-
player games

•
Sharing information (contacts or other information)

•
Standard View Controllers (common UI)

•
Display/Edit contacts

•
Create/Edit calendar events

•
Compose email or SMS messages

•
Take a picture or shoot a video clip

Cocoa Touch

•
Gesture Recognizers

•
App associates action with the following:

–
Tapping (any number of taps)

–
Pinching in or out for zoom control

–
Panning or dragging

–
Swiping

–
Rotating

–
Long Presses

Cocoa Touch

•
Automatic Layou
t

•
Localization through string swapping

•
Mirroring UI elements for right
-
to
-
left languages

•
Storyboards

•
UI to design all views, including connections

•
Programmer can generate code for UI components that
create, replace, or add components and/or wire
-
ups

Cocoa Touch

•
Printing Support (network printers)

•
External Display Support

•
D
isplay app content on a
cable connected

external
device

•
Query and display and set screen resolutions

Cocoa Touch Frameworks

•
Address Book UI Framework


•
A
ccess to address book content and

•
UI components for creating and editing contacts

•
Event Kit


view and edit calendar events

•
Game Kit



•
Bonjour


discover and communication with services

•
Game Center (on
-
line service) for aliases, leaderboards,
matchmaking, record player progress, and challenges

Cocoa Touch Frameworks

•
iAd



deliver banner ads through your
app
using Apple on
-
line service

•
Map Kit


Map display

•
Directions
--

routing

•
Annotations

•
Points of interest

•
Message UI and Twitter Frameworks

•
Email messages


View and create

•
SMS message


view and create


Cocoa Touch Frameworks

•
UIKit

Framework

•
App and UI management

•
Graphics and windowing support

•
Customization of standard
UIKit

controls

•
Support for Text (cut
, copy, paste
) and Web content

•
Animating UI content, Integration with other Apps,

•
PDF creation

•
Accelerometer data

•
Camera and photo library

•
Device, battery state, proximity sensor, remote control

iOS

Layers

Media Layer

•
Graphics Technologies

–
Core Graphics (Quartz) 2D vector and image
rendering

–
Core Animation, Manipulation of Video and Stills

–
OpenGL ES and
GLKit

(2D & 3D rendering)

Media Layer

•
Audio Technologies

•
Media player and audio record (microphone). Manage
audio playback and recording in Objective
-
C App

•
API access to iTunes Library and playlists

•
Virtual 3D audio positioning

•
Supports Audio formats: AAC, Apple Lossless, A
-
law,
IMA/ADPCM, Linear PCM, micro
-
law, DVI/Intel IMA
ADPCM, Microsoft GSM 6.10, AES3
-
2003

Media Layer

•
Video Technologies

•
UI control provides interface for recording video on
devices with camera

•
Media Player Framework


play full or part screen
movies

•
Objective
-
C interfaces for managing capture and
playback of movies

•
Video Formats: H.264 in Low Complexity and Baseline
Profile; m4v, mp4, .
mov

formats

•
MPEG
-
4 Video (Simple Profile) up to 2.5 Mbps 640x480
pixels, 30fps (.m4v, .mp4, and .
mov
)

Media Layer: Audio Frameworks

•
AirPlay

–
Facilities for streaming audio to
AirPlay

speakers,
receivers, and
AppleTV
.

–
Audio content played using any of the Core or
Media layer audio facilities can be used with
AirPlay
.


iOS

Layers

Core Services

•
iCloud

Storage

–
Application can write user documents and data to
a central location.

–
Documents and data are accessible from all of the
user’s devices, without having to sync or transfer
files explicitly.

–
iCloud

also supports a (small) key
-
value data store
that is not visible to the user.

iCloud

Core Services

•
Automatic Reference Counting


as opposed
to garbage collection.

•
Block Objects


closures, also called lambda
blocks.

–
In
-
line delegates/delegate methods, callbacks,
handlers, asynchronous tasks.

•
File
-
Sharing


Documents directory
readable/writeable using iTunes from another
device.

Core Services

•
Grand Central Dispatch


asynchronous
programming that’s more efficient than
threads.

•
In
-
App Purchase


App can process financial
transactions using iTunes account.

•
SQLite



In
-
App connection
-
less database.

•
Core Data


Xcode

buildable schema,
manages SQLite DB for app, MVC support

Core Services

•
Telephony Framework

–
Interact with phone
-
based information

–
Information about cellular provider,

–
Notifications of cellular call events

–
Cellular radio information, such as signal strength.

Core Services

•
Newsstand Kit Framework

–
For publishers to provide their own apps for
reading magazines and news papers.

•
Pass Kit Framework

–
Support for downloadable passes. Companies can
create passes, coupons, boarding passes, event
tickets and coupons and discount cards for their
businesses.

–
Framework objects connect directly to a
companies web services.

Android

•
Linux kernel

•
Runtime includes core libraries and
Dalvik

VM

•
Every Android app runs in its own process with its own
VM

•
Android uses a set of C/C++ libraries. These are
exposed to developers

–
C
-
library based on BSD

–
Media library is based on
PacketVideo’s

openCORE

•
Any application may publish its capabilities and then
any other application can utilize those facilities

Android API’s

•
Animation and Graphics

–
Access to Android’s
graphics features such as
OpenGL, hardware acceleration, and built
-
in UI
animations.

–
Android
APIs
for applying animation to UI
elements and drawing
2D
and 3D graphics
.

–
OpenGL


OpenGL ES, which is OpenGL for
embedded devices.

Android API’s

•
Media and Camera

–
Add video, audio, and photo
capabilities;
APIs for
playing and recording media
.

–
Support
for playing
common audio, video and
image types. Supports playing media
from
file
resources,
from standalone files in the
filesystem
,
or from a
network data stream.

–
Support
for
encoding audio with common formats

–
Camera


capture and manage pictures & video


Android Optional API Add
-
Ons

•
AdMob

–
Advertising
network that helps app developers
monetize and promote their mobile and tablet
apps with ads
.

Android Optional API Add
-
Ons

•
Analytics App
Tracking

–
Connect
user interactions with paid ads, Google
Play downloads, and subsequent in
-
app

usage and
Ecommerce
transactions.


Android Optional API Add
-
Ons

•
Cloud
Messaging

–
A

service that allows you to send data from your
cloud server
to your users' Android
-
powered
device.


Android Optional API Add
-
Ons

•
Play
Services

–
Common
access to Google services such as Maps
and Google+; Single authorization, billing,
licensing, and automatic updates.


Android Optional API Add
-
Ons

•
Web
Driver

–
W3C Web Driver Implementation.

–
A
llows
programs or scripts to introspect into, and
control the
behaviour

of, a web browser. The
WebDriver

API is primarily intended to allow
developers to write tests that automate a browser
from a separate controlling process,


Android Optional API Add
-
Ons

•
APK Expansion
Library

–
Allows
apk’s

to be larger than 50MB so they may
include media or other large resources.


Cst594 Mobile Computing


THANK YOU


QUESTIONS ?

Cst594 Mobile Computing