android app anatomy - york university€¦ · android app anatomy eecs 4443 – mobile user...

12/01/2016

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Android App Anatomy

EECS 4443 – Mobile User Interfaces

Scott MacKenzie

York University

© Scott MacKenzie

Android UI

Status Bar

Action Bar

Content Area

Navigation Bar

2© Scott MacKenzie

(click here)

12/01/2016

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Android Application – In Parts

From Studio's“Android” viewof the project…

• Project

• Module

• Manifest

• Package

• Source files

• Images (for app)

• XML layout

• String constants

• Build script

3© Scott MacKenzie

Source (.java) Files

4© Scott MacKenzie

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• Project

• Module

• Manifest

• Package

• Source files


• XML layout


• Build script

5© Scott MacKenzie

Layout (.xml) Files

6© Scott MacKenzie

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Layout (.xml) Files

7© Scott MacKenzie



• Project

• Module

• Manifest

• Package

• Source files


• XML layout


• Build script

8© Scott MacKenzie

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String (.xml) Constants

9© Scott MacKenzie



• Project

• Module

• Manifest

• Package

• Source files


• XML layout


• Build script

10© Scott MacKenzie

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What the heck is "manifest"?

• This is a reasonable question if you are new to Android programming

• Here's a simple way to answer this question (and other questions like this)

• Go to

and type "manifest" in the search field ( )

© Scott MacKenzie11

developer.android.com

Manifest (.xml) File


No! (next slide)

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minSDK, targetSDK

• Android projects are built to run on devices supporting a range of API levels

• API level determined in the project setup

• Varies by IDE

• Eclipse:– Specified in AndroidManifest.xml via <uses-

sdk> element (previous slide)

• Studio:– Specified in build.gradle (next slide)




• Project

• Module

• Manifest

• Package

• Source files


• XML layout


• Build script


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build.gradle (Demo_Android)


API Levels (partial list)


http://developer.android.com/guide/topics/manifest/uses-sdk-element.html

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Changing minSDK & targetSDK

• How do you change the min/target API levels for an Android project using Studio?

1. Edit build.gradle

2. Sync Project with Gradle Files ( )

• Or (preferred) …1. Right click on your project file ("app")

2. Select "Open Module Settings"

3. Go to the "Flavors" tab and edit settings

1. A better question… How do you figure out stuff like this? (next slide)


StackOverflow to the Rescue


http://stackoverflow.com/questions/19465049/changing-api-level-android-studio

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Android Package (.apk file)


From Studio's“Project” viewof the project…

Activities


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Minimum Implementation


Activity Lifecycle

“Running”


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ActivityLifecycle(more detail)


Activity Lifecycle Callbacks (1)


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Activity Lifecycle Callbacks (2)


android app anatomy - york university€¦ · android app anatomy eecs 4443 – mobile user...

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