Mobile App Development 1

Question 1

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

Answer 1

Mobile application

Question 2

Device Platforms

Answer 2

iOS – Apple Inc.
Android - Google

Question 3

four major development approaches

Answer 3

1. Native Mobile Applications
2. Cross-Platform Mobile Applications
3. Hybrid Mobile Applications
4. Progressive Web Applications

Question 4

When choosing the right development approach for their projects, developers consider

Answer 4

1. desired user experience
2. the computing resources and native features required by the app
3. the development budget
4. time targets
5. resources available to maintain the app.

Question 5

written in programming language and frameworks provided by the platform owner and running directly on the operating system of the device

Answer 5

native applications

Question 6

native applications pros

Answer 6

• best runtime performance
• direct access to api

Question 7

native applications cons

Answer 7

• higher costs when building and maintaining app
• multiple code-bases for each platform

Question 8

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

Answer 8

cross-platform applications

Question 9

cross-platform applications pros

Answer 9

• single code base for multiple platforms
• easy to build and maintain the app

Question 10

cross-platform applications cons

Answer 10

• dependents on bridges and libraries for native deivce features
• performance limitations due to bridging

Question 11

• built with standard web technologies such as JS, CSS, HTML5 and they are bundled as app installation packages.
• work on a web container which provides a browser runtime and a bridge for native device APIs via Apache

Answer 11

hybrid web application

Question 12

hybrid web application pros

Answer 12

• shared code base between web and mobile apps
• using web development skillset for building mobile apps

Question 13

hybrid web application cons

Answer 13

• lower perfomance comapred to native apps
• limited support for native device features

Question 14

• offer an alternative approach by skipping app store delivery and app installations
• utilize a set of browser capabilities such as working offline, running background process, and adding link to the device home screen to provide an app like user experience

Answer 14

progressive web development

Question 15

progressive web development pros

Answer 15

• same app is available both for web and mobile
• no installation required, accessible through url

Question 16

progressive web development cons

Answer 16

• limited support for native device features
• app capabilities depend on the browser in use

Question 17

how does native apps differ to hybrid apps

Answer 17

1. platform specific
2. compiled language
3. access to device hardware
4. platform frameworks

Question 18

how does hybrid apps differ to native apps

Answer 18

1. cross platform
2. scripting/compiled
3. plugins/native modules
4. web frameworks

Question 19

Why Choose the Hybrid/Cross-platform Approach?

Answer 19

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.

Question 20

How Hybrid and Cross-platform Frameworks Work?

Answer 20

• Hybrid apps leverage web technologies like HTML5/CSS/JavaScript, encapsulating them in a container for native-like functionality on devices. This approach enables quick mobile app development, utilizing existing web code. With improving mobile browser performance, hybrid development is a viable choice for web developers.
• Progressive Web Apps (PWAs) use traditional web technologies and are accessed through browsers. They provide a responsive and app-like experience, merging the benefits of web and mobile app development.
• Cross-platform frameworks like React Native and NativeScript offer native components for cross-platform code, while Flutter and Xamarin compile code to native, optimizing performance. Each framework caters to different development preferences and goals.

Question 21

There are two interlinked core components of a mobile application

Answer 21

1. the mobile application “Front-End” that resides on the mobile device
2. “Back-End” that supports the mobile front-end.

Question 22

mobile application cycle

Answer 22

develop
test
release
monitor
analyze

Question 23

cloud backend cycle

Answer 23

deploy
test
develop
analyze
monitor

Question 24

How Front-end ‘Talks’ to the Back-end?

Answer 24

The mobile front-end obtains the data from the back-end via a variety of service calls such as APIs.

Question 25

Why Developers Use a Cloud-backend?

Answer 25

Most mobile app developers may not be experts in setting up and managing the backend (the server-side) of their apps. To simplify their work, they often use backend-as-a-service providers. These services take care of the **technical backend details like scalability and security,** letting developers concentrate on building the actual features of their app without worrying about the complicated backend stuff. It's like having someone else handle the tough behind-the-scenes work so developers can focus on making their app work well.

Question 26

How Mobile Aps Integrate with the Backend?

Answer 26

These back-end services are typically accessed through a variety of application programming interfaces, most commonly known as APIs

Question 27

Key Mobile Application Services

Answer 27

1. Essential services 2. data services 3. machine learning

Question 28

essential services

Answer 28

1. user sign-in/sign-up and management 2. social login 3. analytics and user engagement 4. push notifications 5. real device testing

Question 29

machine learning services

Answer 29

1. conversational bots 2. image and video recognition 3. speech recognition

Question 30

data service

Answer 30

* cloud storage * reatime and offline data * cloud function