To ensure success as an Android developer, you must possess the following technical skills.

Building user interfaces:

It is important that you can do the conversion of an Android design into a functional application using Java and XML. In order to do this, you'll need to know how to use all conventional view containers. Having a basic understanding of all the standard views and other components in an Android app is also important.

Data storage and notifications:

You should be familiar with how to store, update, and delete data on an Android device. It is still necessary to store information locally on the user's device, even if an app relies on APIs from outside. Moreover, push notifications should be implemented to communicate with users.

Material Design guidelines:

Android applications are using the Material Design framework, created in 2014 by Google. When designing or developing a new app, you should understand how this works. Implementing basic Material Design guidelines into an app is also something you should know.

Along with the technical skills, following are the soft skills you need to be master

Problem-solving: 

Problem-solving and analytical thinking are required in all coding positions. This requires effectively thinking through a problem and determining a solution using code. You should be able to troubleshoot and solve bugs in existing code. In a similar spirit, you must be able to modify an application to satisfy new requirements.

Pay close attention to the details:

When it comes to coding, the finer points are crucial. Each detail has an impact on the program's output. An application could crash or malfunction as a result of a single typo. When coding, you should take your time and examine every element.

Teamwork:

As a mobile app developer, you’ll most likely have to work in teams. You should be able to respond well in collaborative environments. More than that, you're going to have to work well with others to accomplish a certain task.