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Induction into the Android Army

Tom Opgenorth
Tom Opgenorth

My slides from Prairie Developer's Conference (March, 2015) on getting started with writing Android applications.

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Induction Into the Android Army Tom Opgenorth | tom@opgenorth.net
A Word From Our Sponsors
1. Getting Started 2. Android Architecture 3. Parts of an Android Application 4. Look at Code! Things Well Talk About
What Involved Getting Started
1. Download the Android SDK & Java 2. Get an IDE 3. Emulators & Devices 4. Google Developer Account Writing Android Apps
Only an approximation Emulators dont replace devices Googles emulator sucks A Word About Emulators Genymotion is a better emulator
So What Kind of Device? So Many To Choose From Try to get one you can root Prefer Nexus devices from Google Make sure you enable Developer Mode
What does Android Look like under the Hood? The Android Operating System
Induction into the Android Army
Distinct components with specific roles Adaptable to many different forms and purposes Android App Architecture
Activity.Equals(Screen) Displays all UI Elements for an app XML for layout files UI can be decomposed into Fragments Activities
Activities & Fragments
A component that performs long running operations in the background No User Interface Can be bound to other applications Services
Intents Pick Photo Call Mom Edit Contact View Web Page Get GPS Loca>on Play Song Send Email Start App Send TweetView Map View Video Browse Market Capture Video Capture Photo Edit Calendar
Listens for messages Tells Android what to to in response to message Broadcast Receiver
Content Provider One structured way to share data between applications. Not just databases: files, photos, contacts, and more Uses an Android URI to reference content
A - Identifies this is for content B - Authority (who owns this data) C - A query to help identify where to find the content D - an ID that identifies a particular piece of content Content Provider
The Manifest File AndroidManifest.xml Broadcast Receivers Content Providers Intents Activities App meta-data
Non-code files and static content that your app uses. Different resources for different devices Android decides what to use Default vs Alternate Resources Resources
Induction into the Android Army
Induction into the Android Army
Building an APK - Simplified
Show Me The Code!
Android - http://developer.android.com Genymotion - http://www.genymotion.com Links / References
Thank You! Questions?

More Related Content

Induction into the Android Army

  • 1. Induction Into the Android Army Tom Opgenorth | tom@opgenorth.net
  • 2. A Word From Our Sponsors
  • 3. 1. Getting Started 2. Android Architecture 3. Parts of an Android Application 4. Look at Code! Things Well Talk About
  • 5. 1. Download the Android SDK & Java 2. Get an IDE 3. Emulators & Devices 4. Google Developer Account Writing Android Apps
  • 6. Only an approximation Emulators dont replace devices Googles emulator sucks A Word About Emulators Genymotion is a better emulator
  • 7. So What Kind of Device? So Many To Choose From Try to get one you can root Prefer Nexus devices from Google Make sure you enable Developer Mode
  • 8. What does Android Look like under the Hood? The Android Operating System
  • 10. Distinct components with specific roles Adaptable to many different forms and purposes Android App Architecture
  • 11. Activity.Equals(Screen) Displays all UI Elements for an app XML for layout files UI can be decomposed into Fragments Activities
  • 13. A component that performs long running operations in the background No User Interface Can be bound to other applications Services
  • 14. Intents Pick Photo Call Mom Edit Contact View Web Page Get GPS Loca>on Play Song Send Email Start App Send TweetView Map View Video Browse Market Capture Video Capture Photo Edit Calendar
  • 15. Listens for messages Tells Android what to to in response to message Broadcast Receiver
  • 16. Content Provider One structured way to share data between applications. Not just databases: files, photos, contacts, and more Uses an Android URI to reference content
  • 17. A - Identifies this is for content B - Authority (who owns this data) C - A query to help identify where to find the content D - an ID that identifies a particular piece of content Content Provider
  • 18. The Manifest File AndroidManifest.xml Broadcast Receivers Content Providers Intents Activities App meta-data
  • 19. Non-code files and static content that your app uses. Different resources for different devices Android decides what to use Default vs Alternate Resources Resources
  • 22. Building an APK - Simplified
  • 23. Show Me The Code!
  • 24. Android - http://developer.android.com Genymotion - http://www.genymotion.com Links / References