Annyce Davis

Davis Technology Consulting

Realm Migrations Supercharged with Dagger

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My current tech obsessions are: Realm, Dagger and Unit Testing. Therefore, I’m always looking for opportunities to improve my code in some way that involves one or more of the above. That being said, I realized that the recommended way of handling migrations in Realm could be improved significantly by means of Dagger 2.

We’re going to be refactoring the following Migration class:


With only two version updates, we already have a decent sized method to deal with. What’s more if you didn’t start out by creating tests for your migrations, once this method gets much longer you probably never will. But all is not lost, Dagger’s Multibinding Support is coming to the rescue. Let’s take a look!Continue Reading

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!

Continue Reading

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.

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