Mobile Technologies JULY 24, 2018

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Sharon Parks
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1 Mobile Technologies JULY 24, 2018

2 Overview Motivation Application Android Development

3 What is a Mobile Technology Cellphones, Mobile Gadgets Services that power them (GPS, Radio)

4 Why Mobile?

5 Why Mobile? Ubiquitous, Powerful, Effective at solving problems in remote places 7.2 billion gadgets, and they re multiplying five times faster than we are e-are-officially-more-mobile-devices-than-people-in-the-world html

6 Why Mobile

7 Why Mobile?

8 Why Mobile? High Potential Low Barrier to Entry Easy to monetize/transact

9 Applications SMS/MMS/USSD Mobile Web Auxiliary App Platforms Android/IOS Apps

10 Applications: App architecture SMS/MMS USSD Backend Cloud Service or Browser

11 SMS/MMS Text based apps to deliver content Examples Bank transfer Alert Notifications

12 USSD Codes Q/A Interactive Apps Easy to build smart apps on dumb phones (Feature Phones)

13 USSD

14 USSD Examples: M-pesa M-Survey Distributes survey questionnaires through USSD Pillani Co (GSL 2014) Deliver questions via USSD to assess health of Miners

15 Auxiliary App Platforms New Model of building mobile applications Avoid reinventing the wheel Build app on top of existing apps with huge user base

16 Auxiliary App Platforms Examples Facebook Messenger WeChat Apache Cordova Wit.AI

17 Auxiliary App Platforms Sample Apps built on Messenger CommonLounge MovieBot Woebot

18 Cloud Platforms Microsoft Azure Google Cloud IBM Bluemix Amazon AWS

19 Android IOS Apps

20 Android

21 Android Open Source Fairly Easy to Learn Lots of examples and documentation Feature Rich, Interactive Applications Sensor services Camera, Accelerometer.. Geolocation/GPS services

22 Android Fundamentals Structure of Android Applications

23 Android Fundamentals Android Manifest

24 Android Fundamentals Android Manifest Components and Capabilities Permissions Entry Points Minimum API Level Hardware/Software features required Libraries Required

25 Android Fundamentals Activities An Activity is a screen of your App The user interacts with your app through Activities Activities follow a life cycle

26 Android Fundamentals Activities

27 Android Fundamentals Activity Life Cycle

28 Android Fundamentals Intents App s intent to do something Used to open a new activity Can also pass data between activities

29 Android Fundamentals Services Like Activities, but run in the background Can be used to keep a long running process even when your app loses focus

30 Android Fundamentals Resources: UI Layout

31 Android Fundamentals Resources: ViewGroup Layout

32 Android Fundamentals Resources: Widgets

33 Android Fundamentals Resources: Example XML Layout

34 Example XML <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools=" tools:context="com.example.dalitsobanda.gsl_hw.mainactivity"> <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginleft="50dp" android:layout_marginright="50dp" android:textalignment="center" android:textsize="30dp" android:text="my Favorite App is Robinhood. It has an intuitive user interface, is easy to use, and makes it easy to buy securities without hassle. /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="i am a Button app:layout_constrainttop_tobottomof="@+id/textview /> </android.support.constraint.constraintlayout>

Example XML <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.

35 Example XML <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools=" tools:context="com.example.dalitsobanda.gsl_hw.mainactivity"> <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginleft="50dp" android:layout_marginright="50dp" android:textalignment="center" android:textsize="30dp" android:text="my Favorite App is Robinhood. It has an intuitive user interface, is easy to use, and makes it easy to buy securities without hassle. /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="i am a Button app:layout_constrainttop_tobottomof="@+id/textview /> </android.support.constraint.constraintlayout>

Homework Download and install Android Studio https://developer.android.com/studio/in dex.

36 Homework Download and install Android Studio dex.html Create an activity with a text view In your text view, write down your favorite app and what you like about it

Topics of Discussion

Topics of Discussion Reference CPET 565 Mobile Computing Systems CPET/ITC 499 Mobile Computing Fragments, ActionBar and Menus Part 3 of 5 Android Programming Concepts, by Trish Cornez and Richard Cornez, pubslihed by Jones