Application
Programming
Hend Alkittawi

Android Development
Introduction to Android Studio and
Android Apps Anatomy

GRAPHICAL USER INTERFACES (GUIs)
-

Console app vs. Mobile app!
>> Enter employee name: Ryan
>> Enter employee title: Product
Manager
>> Enter hire date: 06-03-2018

Employee Management
Employee Name
Employee Title

⏬

Employee Hire Date 📅
Submit

ANDROID STUDIO
-

Android Studio is an integrated development environment (IDE)
for building Android apps

-

Download and install Android Studio here

-

Installing Android Studio includes
-

Android SDK (Software Development Kit)

-

Android SDK tools and platform tools (for debugging & testing)

-

A system image for the Android emulator

-

JDK

HELLO, ANDROID STUDIO!
-

In Android Studio, create a new project
-

Select “Phone and Tablet” template → next

-

Select “Empty Views Activity” (different from “No Activity”) →
next

-

-

Package name: edu.utsa.cs3443.projectName → next

-

Language: Java → next

-

Minimum SDK: Android 8 (Oreo)

-

Finish → Finish

Android Studio may need to install several things if this is
your first project - be patient and do not close the IDE until
it is finished!

1

2

3

4

Project tool window

Editor tool window

HELLO, ANDROID STUDIO!
-

Layout Editor
-

drag and drop views in the Design mode

-

view the xml code by clicking the Code button in the top left

HELLO, ANDROID STUDIO!
-

Resource: a piece of your app that is
not code (e.g. image files, audio, XML)

-

Layout: Defines a set of UI objects and
the objects’ positions on the screen

-

View: UI objects (View is a superclass
of all UI components)

-

Inflate: parse an XML layout resource
and convert it to a hierarchy of View
objects

HELLO, ANDROID STUDIO!
-

Activity: a class in the Android SDK which represents an entry point to into your
app and is responsible for managing user interactions with a screen of information
-

Name your Activity class:

SomeNameActivity.java

-

Name your layout file:

activity_some_name.xml

In this example:
MainActivity.java
and
activity_main.xml

HELLO, ANDROID STUDIO!
-

MainActivity.java (default template)
-

onCreate() is called when an instance of the activity subclass is
created

-

setContentView() assigns this activity the UI it manages; it
inflates the layout & puts it on the screen, instantiating all views in
the layout file as defined by their attributes
package edu.utsa.cs3443.hello_world;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}

ANDROID SDK
-

Immediately after installing Android Studio for the first time it
is likely that only the latest released version of the Android SDK
has been installed.

-

To install older versions of the Android SDK simply select the
checkboxes corresponding to the versions and click on the Apply
button.

-

This task can be performed by clicking on the More Actions link
within the welcome dialog or by clicking the Preferences menu
option, then selecting the SDK Manager option from the drop-down
menu,
-

select Android Oreo (8.0)

CREATING A VIRTUAL DEVICE
-

An Android application may be tested by installing and running
it either on a physical device or in an Android Virtual Device
(AVD) emulator environment.

-

As part of the standard Android Studio installation, several
emulator templates are installed allowing AVDs to be
configured for a range of different devices.

-

New AVDs are created and managed using the Android Virtual
Device Manager.
-

Tools > Device Manager (or the

icon)

ANDROID DEVELOPMENT RESOURCES
●

Our Textbook Forum
○

●

Documentation
○

●

●

https://developer.android.com/

Newsgroups And Forums
○

https://stackoverflow.com/questions/tagged/android

○

https://androidforums.com/

Development Tips
○

●

https://forums.bignerdranch.com/

https://android-developers.googleblog.com/

Videos And Tutorials
○

https://www.youtube.com/user/androiddevelopers

CODE DEMO
-

Create a HelloWorld
Android Application
using Android Studio
and walk through the
project content!

IMPORTANT

Run the HelloWorld
Android App on your
machine and/or VDI
before the end of
the week!

DO YOU HAVE ANY
QUESTIONS?

THANK
YOU!

@

hend.alkittawi@utsa.edu

By Appointment
Online