Lesson 9: Integrating The Image Switcher Into The Application
& Wrapping it Up
INTRODUCTION
The
process of publishing your app involves multiple steps that every programmer
and developer must follow. Your application must meet criteria for
functionality, performance and stability, and this involves necessary steps of
debugging and testing. In this lesson you will be exporting the .APK file from
your computer to the Android device for testing. You will learn how to package
the file and prepare it for distribution by creating a certificate and
exporting. You will also learn how to connect an Android device to a computer
and prepare the device for debugging an application file. Furthermore, you will
learn how to use a file manager application to easily locate the application
file and download it to the device. You will close the lesson by testing the device
and viewing its full functionality.
LESSON
OBJECTIVES
By the end of this lesson, you will be able to:
Section #1: Understanding the Publishing
Process and Managing the .APK File
1.
Explain the process of how to prepare an application
for publication and release.
2.
Recognize and describe an Android
Application File (.APK).
Section #2: Using a File Manager to Manage Application
Files
1.
Locate and employ a file manager for
Android Application devices.
Section
#3: Exporting the Application to a Device and Debugging it
1.
Name and create an Android Application
File for testing on a device.
2.
Describe and devise strategies and tools
for testing and debugging Android applications.
Section #4: Video Demonstration: Pulling
it All Together and Putting it to the Test
LEARNING SEQUENCE
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Required Reading
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Read the following:
·
Section
#1:
·
Section
#2:
· Section
#3:
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Resources
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View the
following:
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Video Transcripts
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Assignments
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Complete the
following:
·
Describe the process of preparing your Android app to be
released and publishing. Why is it important to go through this
process?
·
How can
the “Astro File Manager” application be beneficial when storing and managing
files you are testing?
·
What are the critical components to look for
when testing an application?
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INSTRUCTION
Section #1: Understanding the Publishing Process and Managing the .APK File
In this section you will review the process of
finally publishing your application. As a first step in the this process, you will learn about what makes up the
Android Application file (.APK) and what the process of publishing the file
includes.
Step 1.
This
resource from Google provides an overview of the considerations you need to
make before publishing an application. It includes tips for debugging before
publishing and also a list of potential ways of sharing out your .APK file.
Step 2.
This resource provides the direct definition of
the .APK file and tells you what purpose the APK serves to users. You will be
provided a brief overview of where .APK files can be downloaded from, and you
will learn tips for using them with your Android device.
Step 3.
This
resource provides a brief overview of how to download and install .APK files.
This resource can be used to assist you in seeing what the device needs for
.APK files.
Step 4.
Complete Assignment #1: Describe
the process of preparing your Android app to be released and publishing. Why is
it important to go through this process?
Section #2: Using a File Manager to Manage Application Files
In this section you will learn how to use the
“Astro File Manager” application to manage .APK files on an Android device.
Step 1.
This resource describes the tools available with the
Astro File Manager. The resources provided in this resources also point to
where this application is available on the Google Play store.
Step 2.
Complete Assignment #2: How can the “Astro File Manager” application be beneficial when
storing and managing files you are testing?
Section
#3: Exporting the Application to a Device and Debugging it
Step 1.
This
Google developer resource outlines some of the best practices for debugging
code within Eclipse. Using Eclipse with the
ADT plugin, you can access the built-in Java Debugger, along with DDMS, to perform
the debug of your application.
Step 2.
This resource provides an overview for what to
look for when debugging an application. This short article and resources
outlines the main components that
comprise a typical Android debugging environment. Use this resource as you review your application for
exporting.
Step 3.
This
resource provides suggestions for what to test for in the Android application.
Use this as a starting point for choosing items to focus on in your application
testing process. The guidance from this article will go a long way in making
sure that your app runs seamlessly.
Step 4.
Complete Assignment #3: What are the critical components to
look for when testing an application?
Section #4: Video Demonstration:
Pulling it All Together
In this final video tutorial you will learn how to
export the .APK file from the Eclipse software. You will then learn how to add
an Android device to a computer and change its setting to that of an external
device. You will be asked to download the “Astro File Manager” application to
help you locate the .APK file on the device. At the conclusion of the video the
.APK file will be transferred from the computer to the device and the “Astro
File Manager” will be used to locate and run the application for testing on the
Android device.
Step 1.
SUMMARY
This lesson concludes the course in developing a
mobile application using Java for Android. You have learned how to export the
program that you have been creating as an .APK file which can run on a Android
device and test the loading, user interface, counter, music, accelerometer and
image swiper activities located within the menu of the application. In this course
you have learned how to create an application which incorporates a launching
graphic with sound that also includes a list menu of distinct items (counter, accelerometer,
image swiper). The application you have learned to develop also has an icon that
will appear on the apps page of an Android device.
ASSIGNMENTS
· Describe the process
of preparing your Android app to be released and publishing. Why is it
important to go through this process?
· How can the “Astro File Manager” application be
beneficial when storing and managing files you are testing?
· What are
the critical components to look for when testing an application?
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