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Mobile Application Development
Mobile application development is the process of creating software applications that run on a mobile device, and a typical mobile application utilizes a network connection to work with remote computing resources. Hence, the mobile development process involves creating installable software bundles (code, binaries, assets, etc.) , implementing backend services such as data access with an API, and testing the application on target devices.
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Mobile application development is the process of creating software applications that run on a mobile device, and a typical mobile application utilizes a network connection to work with remote computing resources. Hence, the mobile development process involves creating installable software bundles (code, binaries, assets, etc.) , implementing backend services such as data access with an API, and testing the application on target devices.
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Mobile application development is the process of creating software applications that run on a mobile device, and a typical mobile application utilizes a network connection to work with remote computing resources. Hence, the mobile development process involves creating installable software bundles (code, binaries, assets, etc.) , implementing backend services such as data access with an API, and testing the application on target devices.
Mobile application development is the process of creating software applications that run on a mobile device, and a typical mobile application utilizes a network connection to work with remote computing resources. Hence, the mobile development process involves creating installable software bundles (code, binaries, assets, etc.) , implementing backend services such as data access with an API, and testing the application on target devices.
Mobile Applications and Device Platforms
There are two dominant platforms in the modern smartphone market. One is the iOS platform from Apple Inc. The iOS platform is the operating system that powers Apple's popular line of iPhone smartphones. The second is Android from Google. The Android operating system is used not only by Google devices but also by many other OEMs to built their own smartphones and other smart devices.
Although there are some similarities between these two platforms when building applications, developing for iOS vs. developing for Android involves using different software development kits (SDKs) and different development toolchain. While Apple uses iOS exclusively for its own devices, Google makes Android available to other companies provided they meet specific requirements such as including certain Google applications on the devices they ship. Developers can build apps for hundreds of millions of devices by targeting both of these platforms.
Alternatives for Building Mobile Apps
There are four major development approaches when building mobile applications
Native Mobile Applications
Cross-Platform Native Mobile Applications
Hybrid Mobile Applications
Progressive Web Applications
Each of these approaches for developing mobile applications has its own set of advantages and disadvantages. When choosing the right development approach for their projects, developers consider the desired user experience, the computing resources and native features required by the app, the development budget, time targets, and resources available to maintain the app.
Native Applications
Native mobile applications are written in the programming language and frameworks provided by the platform owner and running directly on the operating system of the device such as iOS and Android.
Cross-Platform Applications
Cross-platform native mobile applications can be written in variety of different programming languages and frameworks, but they are compiled into a native application running directly on the operating system of the device.
Hybrid-Web Applications
Hybrid mobile applications are built with standard web technologies - such as JavaScript, CSS, and HTML5 - and they are bundled as app installation packages. Contrary to the native apps, hybrid apps work on a 'web container' which provides a browser runtime and a bridge for native device APIs via Apache Cordova.
Progressive Web Applications
PWAs offer an alternative approach to traditional mobile app development by skipping app store delivery and app installations. PWAs are web applications that utilize a set of browser capabilities - such as working offline, running a background process, and adding a link to the device home screen - to provide an 'app like' user experience.
Pros
+ Best runtime performance + Single code base for multiple platforms + Shared code base between web and mobile apps + Same app is available both for web and mobile
+ Direct access to device APIs + Easy to build and maintain your app + Using web development skillset for building mobile apps + No installation required, accessible through a URL
Cons
- Higher costs when building and maintaining your app - Dependents on bridges and libraries for native device features - Lower performance compared to native apps - Limited support for native device features
- Multiple code-bases for each platform - Performance limitations due to bridging - Limited support for native device features - App capabilities depend on the browser in use
Comparing Native vs. Hybrid Applications
At the highest level, there are four main ways that native apps differ from hybrid apps as illustrated in the following table.
Native Hybrid
Platform Specific Cross Platform
Compiled Language Scripting / Compiled
Access to Device Hardware Plugins / Native Modules
Platform Frameworks Web Frameworks
Why Choose the Hybrid/Cross-platform Approach?
One problem with native mobile application development is that it requires a highly specialized skill set. Although there are large and vibrant developer communities for C and Java -- the language families that are mostly used for native development --, there are fewer developers who are knowledgeable in platform-specific versions of those languages and their respective IDEs. In fact, skilled native app developers are in such demand, that many companies are hard-pressed to hire and retain them on staff, and instead they frequently have to resort to outside 3rd party design and development houses to build their apps for them.
How Hybrid and Cross-platform Frameworks Work?
Hybrid apps allow developers to use web technologies of HTML5/CSS/JavaScript and then encapsulate those web applications in a container that allows the web application to act like a native application on the device. Since hybrid mobile apps are just web apps running on an embedded browser environment, most of the code from a web app can be used to build a mobile app. As rendering and runtime performance of mobile browsers are ever-increasing, hybrid development is a viable alternative for web developers who want to build mobile apps quickly.
Similarly, PWAs are written using traditional web application programming technologies usually including some variant of JavaScript, HTML5, and CSS, and are accessed initially through a browser on the device or computer.
Most cross-platform frameworks such as - React Native and Native Script - provides native components to work with the cross-platform code, while some others such as Flutter and Xamarin compiles cross-platform code to the native code for better performance.
The Mobile Application Development Lifecycle
There are two interlinked core components of a mobile application: 1) the mobile application “Front-End” that resides on the mobile device, and 2) the services “Back-End” that supports the mobile front-end.
Mobile-App-Dev-Lifecycle
Front-end vs. Back-end
In the early days of the modern smartphone applications era, mobile applications went through a similar evolution as first websites. At first, the applications and sites where wholly contained within themselves and acted as little more than static advertisements for the brand, company, product, or service.
However, as connectivity and network capabilities improved, the applications became increasingly connected to sources of data and information that lived outside of the app itself, and the apps became increasingly dynamic as they were able to update their UI and content with data received over the network from queries to data sources.
As a result, the mobile front-end applications increasingly rely on and integrated with back-end services which provide data to be consumed through the mobile front-end. Such data can include, for example, product information for e-commerce apps or flight info for travel and reservation apps. For a mobile game, the data may include new levels or challenges and scores or avatars from other players.
How Front-end 'Talks' to the Back-end?
The mobile front-end obtains the data from the back-end via a variety of service calls such as APIs. In some cases, these APIs may be owned and operated by the same entity developing the mobile application. In other cases, the API may be controlled by a third party and access is granted to the mobile application via a commercial arrangement.
For example, a developer may obtain social media or advertising content by making calls to media or advertising company services. In this case, a developer may have to sign a contract in order to obtain credentials and a key that grants access to the API and governs how that developer can use it, how much it will cost, or how frequently it may be called, or how much data can be requested over what time period.
Why Developers Use a Cloud-backend?
For most of the applications, mobile developers are responsible for creating and managing the back-end services for their application. The mobile developer may not be an expert or even particularly skilled in spinning up and running a back-end infrastructure.
In such a case, developers may prefer to take advantage of a cloud services provider -- a backend-as-a-service provider -- that handles all of the drudge work and heavy lifting of managing back-end capabilities, so the developers can focus purely on the features and functionality they are building in their app, without having to worry about scalability, security, and reliability.
The Mobile Application Front-End
The mobile front-end is the visual and interactive part of the application the user experiences. It usually resides on the device, or there is at least an icon representing the app that is visible on the home screen or is pinned in the application catalog of the device. The application can be downloaded from the platform app store, side-loaded directly onto the device, or can be reached through the device’s browser, as in the case for PWAs.
What a Front-end Development Workflow Looks Like?
When a developer says they are a mobile application programmer, they are most often referring to this front-end part of the application, and they are skilled in the languages and technologies that are used to create this front-end application.
Depending on the size of the team producing the app, there may be many different people involved in the design and development of the front-end mobile app. The team size can range from a single developer who does everything associated with building the app, to tens, hundreds, and more people with specialized skills.
For example, there may be dedicated creative/graphics designers who are responsible for creating visual elements of applications like icons, backgrounds, colors, themes and other parts of the app. The team may also have user experience and user interface designs who work on the layout of the components, how they interact with each other and the user. In the case of certain types of games, a team may include motion graphics developers and even engineers who develop engines that govern the physics of how components move in the app, like a car in a racing game.
