Android is one of the world’s most popular mobile platforms, boasting a global market share of hundreds of millions of devices.
Android applications are created using Java and Extensible Markup Language (XML) files. These XML documents specify data resources like UI strings that Android applies at runtime based on device configurations.
Getting Started
Before you begin, be sure to have a firm grasp on your objectives. This will give you an outline for the type of app you wish to build and help focus on the specific steps necessary for success.
For instance, you might have an excellent idea for an Android app that utilizes hardware features already present on your device. This could include photo and graphics processing capability or a feature allowing users to interact with payment gateways or monetary applications through in-app purchases.
To help you get started, we’ve created this codelab that demonstrates how to write an Android app using Java or Kotlin and build it using Gradle’s tool. Additionally, we cover how to run your app on a virtual device (emulator) and debug its code.
Developing a Basic App
App development is the practice of creating software that runs on mobile devices, such as Android apps, iOS applications and Web apps.
To develop an Android app, you need to be familiar with Java programming language and Android Studio – Google’s official development environment. This will enable you to build and test your application across multiple devices, resolve any issues encountered, and publish it to the Google Play Store.
If you’re just starting out as a developer, start with small and straightforward apps that utilize the pre-installed features on an Android phone or tablet. Doing this will give you an opportunity to learn the fundamentals of coding and also give yourself confidence in creating mobile applications.
Next, you can begin writing code for an app that utilizes the photo and graphics processing capabilities of your Android phone or tablet. Doing so will give you a better idea of what goes into more complex applications, as well as allow you to observe how different design choices affect user experience.
Developing a More Advanced App
If you’re interested in creating a more complex app, it’s essential to learn about Android’s extensive set of features. These are known as application components and come in various levels of sophistication – from basic to advanced. Furthermore, be familiar with Git, the platform’s source control system, and how it helps keep your app current.
Test out some sample apps before diving in headfirst. Doing this will allow you to fine-tune your coding skills and get your apps into production faster. Plus, it gives you a chance to compare your work with that of fellow students; the outcomes should make you an experienced Android developer with clear communication abilities; this increases the odds that you’ll land your dream job!
When selecting an app for your business needs, research is key. Find the one that provides the most benefits to you, your team and budget in terms of features and capabilities.
Deploying Your App
Deploying an app is a critical step in the development process. It allows you to test it across various devices and get valuable feedback from users.
Your app can be distributed through an app store or directly to users via email. Regardless of how it’s distributed, it must be digitally signed with a key before installation.
Signing your apps is essential, as if they violate any of Google Play’s policy chapters, they could be removed or suspended from the store.
Before publishing your app through Google Play, it must be signed with an upload key that is generated within Android Studio and securely saved.
Once your app has been signed, you must export it as an Android Packaging Kit (APK) file. This APK then needs to be uploaded onto Google Play marketplace and distributed to users.
