Android Mobile App Development Questions, Answered

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Android app development is the process of developing applications designed to run exclusively on Android devices – smartphones, tablets, laptops, computers, and smart TVs. Android operating system, developed by Google in 2008, is the most widely used OS globally, making it crucial for developers, tech enthusiasts, and business owners. Since its release in 2008, the Android operating system has received worldwide acclaim powering millions of devices across the world.

Android mobile app development involves writing code from scratch using reputable programming languages such as Kotlin and Java, designing attractive interfaces, managing data handling and retrieval, integrating various applications and APIs, and ensuring overall app performance and efficiency. The success of Android applications can be attributed to factors such as the availability of many devices at various price points and an open-source nature that encourages innovation.

This article explores some questions on Android mobile app development and their answers. In this post, we will look at various aspects of Android mobile app development, including architectural patterns, choice of programming language, testing, network, design considerations, and data management.

 

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By examining these concepts, readers will obtain valuable insights, empowering them to build robust, efficient, and feature-rich Android applications.

1. What’s the most frequently used programming language for Android applications?

The answer is Java. However, Kotlin has gained popularity and is now the most preferred language over Java. Developers prefer Kotlin to Java for a wide range of reasons: Kotlin is intuitive to use, easy to learn, and Kotlin code is considered safer and more concise than Java.

2. Do I need to learn Java to develop Android applications?

While Java used to be the primary programming language for Android applications, it is no longer an option. Kotlin is more modern, concise, and accurate, and is preferred for modern projects. However, understanding Java can still be beneficial, especially when you encounter legacy codes or libraries written by Java.

3. What’s the advantage of Kotlin over Java?

Understanding the nuance discrepancies between Java and Kotlin is crucial to making an informed decision about your programming language.

Here are the key advantages of Kotlin:

  • Concise syntax. Kotlin’s expressive syntax allows developers to write more concise code, reducing the chances of introducing errors.
  • Null safety. Kotlin type system introduces null safety, reducing the possibility of null pointer exceptions, a common source of bugs.
  • Interoperability. Kotlin can integrate or interoperate with Java, allowing developers to leverage Java-based libraries and legacy codes.
  • Readability. Kotlin’s type inference and expressive nature make the code maintainable and readable.

4. What is Android Studio, and do I need it in Android app development?

Android Studio is the official integrated development environment (IDE). By integrated development environment, it provides the tools, resources, and machinery required to simplify your code. The Android Studio has diverse programming languages, APIs, and other tools needed for beginners to excel.

5. What’s Google Android SDK?

A Google Android SDK is a toolset for developers to write codes in Android-enabled devices. The SDK contains a graphical interface that acts as an Android-driven handheld environment, allowing developers to test and debug their codes.

6. What are the main components of the Android architecture?

The main components of the Android architecture include:

  • Android applications
  • Android framework
  • Libraries
  • Linux Kernel

7. What are the minimum system requirements for Android app development?

To run Android Studio and design Android apps, you need a powerful computer with 8GB RAM, a recent operating system (Windows, Linux, MacOS), a quad-core CPU, and the relevant tools and technologies.

8. What is the Android API level, and why is it important to consider?

The Android API level refers to the version of the Android operating system that your app targets or supports. When developing an app, you will need to narrow down on special versions of Android available out there. We should consider the Android API level because different versions have different capabilities and features. Selecting the right API level ensures your device operates on as many Android devices as possible while taking advantage of new app features.

9. What’s the difference between fragments and activities?

Activities are represented as a single screen with a user interface. Fragments, on the other hand, are modular components within an activity that can be reused or combined in different activities and are especially useful for multi-pane and adaptable layouts.

10. How can I test my app on multiple devices?

The Android Studio provides tools, including an emulator, for simulating various Android devices. In addition, you can use normal Android devices by setting ‘developer mode’ and USB debugging them. You can connect the Android devices on your computer, and test or debug your app.

11. How can I publish my app in the Google Play store?

To publish your app in Google Play, you will first need to set up a development account. Then you will check your app’s store listings and graphics, set up your distribution options, and show compliance with Google Play Store’s policies. Once your app is ready, you can submit it to the Google Console and upload it for review.

12. Can you develop Android applications on platforms other than Windows, Linux, and MacOS?

Yes, you can use cloud-based environments and virtual machines to develop Android-based applications on environments not supported by Android Studio. However, the app’s experience and performance may vary. That’s why it’s advisable to create applications with supported operating systems.

13. How do you select the appropriate architecture pattern in Android app development?

Selecting an appropriate architecture pattern is crucial for maintaining a well-structured codebase. The common types of architectural patterns include:

  • Model-View-Controller (MVC). The model-view presenter is the oldest and most straightforward. It structures data into three main components: view (user interface), model (business and data logic), and controller, which mediates between the model and the view.
  • Model-View-Presenter (MVP). The model view presenter amplifies the performance of the model-view-controller by adding a component known as a ‘presenter’ that acts as an intermediary between the model and the view. The presenter handles user input and updates the view on a need-to-need basis.
  • Model-View-View-Model (MVVM). The model-view-view-model (MVVM) further simplifies the separation of concerns, introducing a view model that holds the application state and business logic, thus separating it from the view.

The choice of architectural pattern depends on the project’s complexity, the team’s expertise, and the app’s long-term maintainability.

14. How do I ensure my app handles multiple screen sizes and resolutions?

In the diverse Android ecosystem, supporting multiple resolutions and screen sizes is important in ensuring a consistent user experience across different devices. To ensure apps handle multiple screen sizes and resolutions, developers can implement the following strategies:

  • Responsive layouts. Use modern layouts (GridLayout, LinearLayout, Relative Layout) to ensure that screen sizes adjust to screens of various sizes and resolutions.
  • Density Independent Pixels (dp). Use density pixels as a unit for defining dimensions instead of pixels. Selecting dp ensures that elements scale appropriately across different screen densities.
  • Resource directories. Ensure you provide alternative resources like layouts and images in separate folders for different screen size densities and resolutions.
  • Vector graphics. Use scalable vector graphics (SVG) for images and icons as they can scale without losing quality.

15. How do I ensure that my app supports older versions?

Supporting older versions is crucial to ensure that you reach a broader audience.

Here’s how you can ensure that your newly developed Android app works even in older versions of the Android operating system.

  • Set the minimum SDK version. You should specify the minimum SDK version your app supports in the AndroidManifest.XML file.
  • Compatibility libraries. Use AndroidX libraries that offer backward compatibility in case of newer features.
  • Feature detection. Use the Build.VERSION.SDK_INT constant to detect a device’s API levels and apply the appropriate code paths.
  • Test. Test on various devices with varying Android versions to identify and fix compatibility issues.

It’s crucial to ensure that your app can access a broader audience by extending support for older versions of the Android operating system.

 

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16. What are the basic components of an Android app?

Android apps are built with basic components such as activities, content providers, services, and broadcast receivers. Activities represent the user interface. Services represent background tasks. broadcast receivers respond to system-wide announcements and content providers manage data-sharing between the app and different endpoint devices – smartphones, tablets, laptops, and smart TVs.

17. What’s an Android Emulator?

Android emulator is a tool by Android Studio simulating Android devices. Through this simulation, it allows the developer to test an app with different configurations and Android versions.

18. How can I optimize my app for better performance?

Performance optimization is crucial for a good user experience. Some tips include: minimizing network requests, efficient data structures, optimizing images, and using background threads for heavy, time-consuming tasks. Most importantly, it’s advisable to properly manage memory to prevent memory leaks.

19. How can I make my app more compatible with other devices?

Use the latest SDK version and select the minimum API target level. Test your app on different virtual devices with varying hardware specifications and different screen sizes.

20. Can you develop IOS apps using Kotlin or Android Studio?

No, Android Studio is exclusively designed for Android mobile applications. If you want to develop IOS mobile apps, you will need Apple’s development tools like Objective-C and XCode.

21. What are some popular libraries and frameworks in Android App Development?

Some popular libraries for Android app development include OkHttp for networking, Hilt for dependency injection, Room for database management, and Gson for parsing. However, it’s important to remember Android app development is an evolving frontier, therefore, it’s advisable to remain updated with the latest trends and technologies.

22. How do you select the best Android app developer?

Selecting the best Android developer depends on several factors such as cost, expertise, and reputation. Most developers offer a defined budget for mobile app development but this cost may differ depending on the diversity of features, operating environments (Android or IOS), and the complexity of the project.

Here’s how you select the best Android developer:

  • Define project requirements. Define the scope of your project, highlighting app features, app capabilities, operating requirements, and security considerations.
  •  Check experience and portfolio. Look for developers with a proven track record of developing superior mobile applications. Review their portfolio to see the quality and range of their work.
  • Technical expertise. Ensure that your expert or developer has sufficient technical expertise in areas like Java, and Kotlin, and understands Android SDK and other development toolkits and libraries.
  • Reviews and references. Request reviews from previous clients and check their portfolios for any reference materials. Online ratings and reviews on platforms such as LinkedIn or Upwork can provide valuable insight into the developer’s expertise.

Finding the right developer depends on project requirements and overall expectations as a client.

23. How do I know if I am ready for an Android app?

Whether running a small business or managing a large corporation, having an Android app is the best way to simplify those monotonous, mundane tasks such as invoicing, communicating, marketing, branding, and personnel management. An Android app streamlines tasks, enhancing the efficiency, scalability, and productivity of operations.

So, if you’re struggling with managing employees, managing your brand, or growing your revenue streams, it’s high time to consider an Android mobile app. An Android mobile app can provide valuable insights needed to reinforce your decision-making in areas like sales, marketing, advertising, and outreach. And if you’re experiencing HR planning and management issues, an HR app can do the job.

Turbocharge Your Digital Presence with Android App Development

NS804 empowers individuals and enterprises to do more with the power of a mobile app. With a robust, efficient, and feature-rich application, you can reach more customers, communicate with a broader audience, and build lasting brand partnerships and customer relationships.

Most importantly, we allow NS804 customers to experience our MVP product, allowing them to know what solutions they are getting by investing in our digital solutions.

Contact NS804 for superior Android app development solutions.

Mobile App Development Denver, Colorado

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Have you ever searched online for ‘mobile app development Denver‘ studios? If that’s the case, you’ve likely come across NS804. And you’ve wondered if this studio can fulfill your app development needs. According to The Manifest, we’re one of the most reviewed app development companies. Furthermore, we’re a growing company with offices in Richmond, Charlotte, and Denver.

And in Denver, we offer clients several mobile app development services to help them achieve their goals. These services include native Android & iOS app development, user interface (UI) & user experience (UX) design, and building minimum viable products (MVPs). But we do a lot more that can reinvigorate and revolutionize your business processes. 

Let’s take a deeper look at why NS804 may be the answer to your mobile app development Denver queries.

1. Enhancing Existing Apps

As a savvy appreneur or business leader, you’ve likely released one or more apps already. But have you enhanced these, and by that, we mean a proper mobile app upgrade and not simply releasing rudimentary updates? If the answer is no, you should upgrade your apps, especially if you haven’t done so for one or more smartphone generations. 

And that’s because your apps are not taking advantage of the latest smartphone and operating system (OS) features. Moreover, they likely have security holes that could expose your users’ privacy and data. While you can patch some of these holes with regular updates, sometimes it’s necessary to migrate your app to the latest OS for enhanced security.

Also, your apps may have an outdated codebase written in an older language. For example, your Android apps could have been written in Java or your iOS apps in Objective-C. But both Google and Apple have introduced modern languages, such as Kotlin and Swift.

So why not rewrite your apps to take advantage of the easier readability, maintainability, and features of these newer languages? If this sounds too complex, the skilled developers at NS804 can rewrite your apps for you! 

2. Streamline All Your Business Processes

All your clients, staff, and vendors use mobile devices and various computer systems. So, integrate these with your existing systems and business processes for maximum efficiency. And there are significant benefits that your enterprise will derive by implementing these integrations.

You’ll be in a position to monitor all client interactions with your enterprise in real-time. And accurately assess staff productivity and gain a bird’s eye view of the entire supply chain. With this information, you’ll tweak and improve every facet of your business without disruptions.

3. Develop The Right Kind Of Apps For Your Target Market

Perhaps you’re a restaurateur that needs an app for food deliveries. Or you’re involved in the field of education and require an easy-to-use app for young scholars. Then, you should work with a studio, such as NS804, that understands your target market and what types of apps best serve this market. 

And if you have a unique app idea that you want to bring to fruition, we can help mitigate the costs and risks by building an MVP. Furthermore, we can assist in marketing, promoting, and scaling your app once your MVP gains traction. 

Mobile App Development Denver Gets Real

It’s always a smart move to partner with an experienced and trusted studio for your app development needs. And that’s because mobile app development is challenging, especially if you need a quality app that will streamline your business processes or help you meet the demands of your target market. Contact NS804 to learn how we’ll help you create amazing apps, whether you’re based in Denver or in any other city in North America.

How Much Does It Cost To Implement Real-Time Updates in Your App?

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Utilizing real-time updates in your personal or business application is no longer an option but a necessity. Most business applications are adopting real-time features such as: push notifications, instant messaging, real-time feed, and tracking live orders. The rising adoption of real-time notification occurs because real-time features deliver information to users in action-time incidences and scenarios.

There’s no doubt that real-time updates have made themselves available in mobile and app development in recent years. For instance, since 2015, instant messaging apps have witnessed a substantial uptake. Today, both established firms and upcoming start-ups are adopting real-time features to strengthen connectivity and power interactivity between users and their brands.

Companies and internet users can benefit immensely from real-time app updates, as both enjoy reliable and quick communication and information exchanges. That is the reason many sectors – healthcare, food and beverage, banking, insurance, technology, education, and retail – are witnessing a rise in real-time features in their apps.

How Businesses and Customers Benefit from Real-Time Updates

The history of real-time updates dates back to when stock market traders realized that it took a long time to update charts and close trade. Real-time updates were developed to update stocks and trades. Shortly, more sectors started embracing real-time updates to streamline internal communication and information exchanges. Real-time features soon migrated to reputable applications such as Uber, Airbnb, Facebook, Instagram, and Twitter. Most apps are equipped with one or another form of real-time technology, thanks to earlier developments made in the stock market.

The following are just but a few advantages of real-time updates:

  • Apps with real-time updates can generate a higher degree of user engagement. Real-time technology helps apps to replicate real-world human behavior. For instance, users can handle multiple tasks simultaneously like, talking to friends while booking a ride in a cab-hauling app.
  • Through real-time updates, users can get connected more naturally. For instance, one can follow friends, share live locations, and message online using these applications.
  • Real-time features enable programmers and developers to focus more on the app’s core competencies. These core competencies include innovative features, upgraded user interfaces, and interactive user experience.
  • With the cloud delivery networks available, developers need not worry about maintenance and related expenses. When developers make real-time updates to users, they can rely on public clouds like the Amazon Web Services AWS.

Examples of real-time updates you can integrate into your app include:

  • Real-time feed
  • Push notifications
  • Integration of IoT devices
  • Multi-user collaboration
  • Live messaging
  • Live streaming
  • Live tracking order status

Here’s how your business and your customers can benefit from real-time updates

1. Real-time messaging

There’s no doubt that people love instant messaging. Messenger apps with multi-group messaging, media sharing, video, and voice calls are a classic replacement for the otherwise archaic, inconvenient SMS messaging. The prominence of instant messaging apps is evidenced by the rise of instant messaging platforms like Slack, Telegram, LINE, and Viber. According to Statista, there were 1.82 billion app users in 2017. This figure is expected to skyrocket to 2.48 billion by 2022.

2. Push notifications

Push notifications have become a necessity for most mobile and web applications. Notifications inform users about critical events, pull them to a brand or a product, and encourage users to use products more. For instance, 21% of users abandon your app after the first use. Thanks to push notifications, you can get users to return to your app by reminding them about its existence. The social app can encourage users to open it and download it by informing your users about recent news or events. However, be careful not to overuse notifications when choosing the right frequency for push notifications.

3. Real-time feeds

An in-app feed feature that updates immediately when new content is published is a necessity for all social networking applications. Twitter, Snapchat, Instagram, and Facebook allow users access to new content and updates without updating their feeds. The advantage is that your app becomes sticky with real-time feeds because users get the latest and most relevant information in real-time.

4. Live data streaming

Live streaming is widely used in many business sectors – from real estate to logistics and social networks. Live data streaming allows an app to create and deliver data to end-users, facilitating deep user engagement. Live streaming is considered the precursor of video streaming.

Developed in 2007 by Periscope, live streaming allows users to create videos and share the videos on platforms where other users can play the video content via smartphones or desktop computers. When Periscope made a market entry, video streaming went viral.

Later, the video-streaming feature was adopted by players such as YouTube, Instagram, Facebook, and now TikTok. Indeed, the popular video streaming platform Twitch has been built around the same live streaming technology – allowing users to stream games and get paid for that.

One of the reasons companies are adopting live streaming as a real-time update is the possibility of connecting with audiences and building user engagement. In 2017, Livestream collaborated on market research with New York Magazine and found out that 80% of the respondents would rather watch a live video than read a website or a blog. For instance, Ustream App is a classic example of an app that uses live video streaming. The app blends augmented reality, 360-degree video capabilities, and virtual reality to transform live streaming experiences.

5. Order status updates

This feature is crucial for on-demand shipping and delivery companies as it helps bridge the trust gap. Users want to know that their orders (products or services) are safe and sound. Indeed, users are more than willing to track the progress of their orders for transparent customer relationships. Research shows that customers care about transparency and accountability in shipping and deliveries.

For instance, 82% of respondents indicated that retailers must constantly communicate at every stage of the delivery process. 45% of respondents track their order status using phones and SMS messaging, while 84% use email to stay updated. So, how can you improve user satisfaction? Well, provide customers with regular updates about their orders. That means providing them with a convenient and efficient way to track their orders via an app.

Other ways customers and businesses can benefit from real-time updates include:

  • Multi-user collaborations
  • Real-time data analytics
  • Control and integration of IoT devices

The internet of things represents a classic example of real-time functionality, whereby data from devices or sensors is conveyed instantly to the end-users.

The Cost of Installing Real-Time Updates on Your App?

It’s crucial to understand app development cost indicators to understand how much it costs to install real-time updates on your app. Well, several years ago, there was a key difference in app development cost between two main platforms – Android and iOS. However, today that difference is not significant. The only driving factor in the difference between app development costs is complexity.

Today, the major factor to consider when calculating the cost of installing real-time updates is the complexity, which can arbitrarily be segmented into – complex, medium, and simple. For instance, the price tag for a simple update ranges from $10,000 to 30,000. Medium-complex real-time updates range from $20,000 to 40,000, and complex real-time update installation cost between $40,000 to $60,000.

The complexity levels of real-time updates

Simple updates Medium updates Complex updates
 
Push notifications Real-time messaging Live data streaming
Real-time feeds Multi-user collaboration Integration of IoT devices
  Live to track of order feeds

Real-time updates installation costs

Simple complexity Medium complexity Complex complexity
$10,000 – $30,000 $20,000 – $40,000 $40,000- $60,000

It’s important to remember that the above numbers are just but a ballpark. They are supposed to offer you a birds-eye view of the prices you’re expected to pay for a real-time installation depending on the complexity, size, and scope of installation.

Maintenance Costs

Every app has an ongoing maintenance cost, no matter who designed or created it. Once an app is created, you have to track its performance, additional updates to install, and let users know of new updates or feeds. If your app leverages a server to store information like payment information and user records, you’ll have to pay to manage this storage.

Every app needs regular and ongoing maintenance and real-time updates to keep users engaged, happy, and coming back for more. In addition, depending on your app’s complexity, you can incur additional costs for emergency maintenance, servers, push notifications, processing, and many more.

So, how much does it cost to maintain an app, including installing real-time updates?

Well, the answer to this question depends wholly on how it was built. You can save significantly on upfront costs with a cheaper developer or programmer. However, if your app is not designed up to par, you’ll run significant expenses as your app grows and attracts more users. It’ll be expensive to install updates if your app didn’t meet the standard requisites of a conventional app.

A good estimation is to budget 20% of your initial app development cost for new real-time updates and installations. If your initial app development cost was $100,000, estimate $20,000 per year for updates and real-time installations.

However, if you outsource NS804 mobile app developers, you get to enjoy subsidized installations of real-time updates. However, be informed that different service providers offer varying costs depending on the app’s complexity, the scope of installation, and other factors.

Why are Real-Time Updates Important?

Real-time updates provide convenience, save time, and enhance user engagement. Investing in real-time updates prevents your app from being obsolete. For instance, in 2016, the Apple App store removed 50,000 apps from the App Store for being obsolete. With technology advancing at an unprecedented pace and with changing user habits, it’s becoming imperative for app developers to adopt real-time updates. Chances are that without real-time capabilities, your app will crash and burn.

If you’re still thinking about why you should install real-time updates, check out the following reasons:

  • Minimizes uninstalls. Apps with regular crashes and annoying bugs frustrate users, driving them away. Similarly, if your app doesn’t offer updated functionalities and information, users may find no reason to use it.
  • Better user experiences. You just don’t want users to download your app; you want them to use it. That is because developing long-term relationships with prospective users is the key to your app’s success. And to nurture lasting and valuable relationships with users, you’ll need to offer a unique user experience that comes with real-time updates.
  • Stay ahead of the competition. Millions of apps in the App Store and Google Store are competing for users’ attention. So, users cannot download and begin using all these apps. To beat the competition and stay at the top, you’ll need to ace your app with new updates, including: push notifications, live streaming, instant messaging, and feeds.
  • Safety from cyberattacks. With increases in mobile apps, there’s a corresponding increase in cyberattacks. So, it’s crucial to ensure the safety and security of your app to prevent exploitation and safeguard sensitive data and information.
  • Increases ROI. Real-time updates offer room for maximizing the returns on investment and decreasing the cost of acquiring new users. Once your app goes live, you’ll probably face crashes and bugs somewhere. Real-time updates provide a reliable communication channel when users face unprecedented service disruptions.

NS804 – Masters in Real-Time App Updates Installation

NS804 ensures that individuals and businesses get the best from their app development journey. With years of experience designing cutting-edge technology solutions, NS804 allows clients to estimate app development costs with an app development calculator. The significance of real-time updates cannot be undermined, with the growing emphasis on superior user experiences in customer relationship management. Real-time updates reinforce relationships by providing a reliable and constant channel of communication.

Contact NS804 for timely solutions in app development and real-time app update installations.