Annyce Davis

Davis Technology Consulting

Background Work with Android Job and Dagger

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Background work on Android can be challenging when you have to support a wide range of API levels. Specifically you can use Alarm Manager, Job Scheduler or GCM Network Manager depending on your minimum API level and if the device has Play Services. To help abstract away which implementation you’re using to perform background work, the good folks at Evernote have open-sourced, Android Job.


Android Job works by first allowing you to define how you want your jobs to be created, by means of the Job Creator class. Then you can schedule requests using the Job Manager and have the confidence that they will be run when the requirements are met. In the image below you can see a representation of the various components involved with using Android Job in your application. Each Job is identified by a tag; this is just a simple String that is used to differentiate the various jobs in your application.


Let’s take a look at each piece!

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Talk: Developing Apps for Emerging Markets

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At Off Grid Electric our mission is to power homes across rural Africa with affordable, solar energy. In order to do that we need to provide our employees with tools that work both on and offline. So how did we do it? In this talk, learn about the techniques we employed to provide a unique online-offline experience in our Android applications.

This talk covers:

  • The overall architecture
  • Third party libraries used
  • Challenges that we faced

 

If you would like to view some of my video content, I encourage you to check out my video course and bite-sized tutorials available on Caster.io.

Talk: Develop Maintainable Apps

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Great Android apps only include what’s needed to achieve the goals of the product, not enhance the resume of the developer. What’s more, the more maintainable an application is, the more likely it will have increased user satisfaction and decreased time to market.

This talk covers:

  • Choosing your 3rd Party Components Wisely
  • Keeping your Code Simple
  • Using Static Code Analysis Tools
  • Writing Unit Tests

Materials:

If you would like to view some of my video content, I encourage you to check out my video course and bite-sized tutorials available on Caster.io.

GR8Conf US 2016 Recap

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This was my first time attending GR8Conf and it was a really great experience. I primarily focus on Android Development now, but I enjoy dabbling in some API Development when I find the time. This conference was very inspiring and I plan on investigating many of the new things that I learned. Here are a few highlights of the event:

Overview

So the event took place at The University of St. Thomas in Minneapolis, Minnesota. This was my first time in Minnesota, it’s a very beautiful city. I was especially impressed with the Skyway System, which allows you to walk between buildings without going outside. I took it on as a personal challenge to find the Target store from the main conference building and make it back on my own.

@brwngrldev basically, didn’t see people, discovered they walk around like gerbils in these walkways all day

— Annyce Davis (@brwngrldev) July 28, 2016


The conference is focused on the technologies related to the Groovy ecosystem, such as Grails, Ratpack, Gradle, and Spock. Despite “the hate” that I sometimes hear about Groovy, I’m a big fan and was excited to have the chance to be a part of the conference.

Takeaways

So there were a few sessions that I derived a ton of value from, one was the “Grails Keynote”. It was delivered by Graeme Rocher, the Grails Project Lead. He discussed the many enhancements in Grails 3, such as:

  • Being Based on Spring Boot
  • Using the Gradle Build System
  • The Use of Profiles

He showed how simple it is to use the rest-api profile to create REST applications in Grails. I was really impressed with how quickly he was able to get an application up and running. He also demonstrated some of the upcoming features in GORM to support reactive programming, it was all very exciting to see.

Then during the “Documenting RESTful APIs with Spring REST Docs” talk, by Jenn Strater I really enjoyed learning about the various options available for making sure you have proper documentation for your REST APIs. She showed several examples of using Asciidoctor to generate documentation snippets. I had never seen that approach of using tests to ensure documentation was written before. I would love to see something similar for Android libraries perhaps.

Learning about Spring REST Docs with @codeJENNerator, documenting your API. #gr8conf pic.twitter.com/G4HpAflFxb

— Annyce Davis (@brwngrldev) July 28, 2016


I also really enjoyed the information shared during the “Feeling Groovy” talk. Ken Kousen brought up several compelling points about the perception vs. reality of the Groovy ecosystem. Specifically he spoke on how some perceive Groovy as being “in trouble”, yet it’s an extremely stable language backed by a very engaged community. He also showed several examples of how Groovy as a language shines in comparison to Java. The talk ended with a rallying cry for those in the community to share their positive experiences with others. It was truly well done!


Further, it was really great to meet people in real life that I only knew from Twitter, like Ken and Jenn.

.@devlifehax I got to finally meet @kenkousen and you’ll be happy to know we left our capes at home 😉 #gr8conf pic.twitter.com/yp8sAjMz9K

— Annyce Davis (@brwngrldev) July 29, 2016


This was my first time giving two talks at one conference. It was a little stressful, I admit, but I’m glad I stepped up to the challenge and had the opportunity to meet such friendly, interesting people.

 
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