Welcome to What is website development? Modern Android Development in 2023 Hello everyone, today I'm going to show you how to create Android apps using the newest trends for 2023. Disclaimer This essay is based on my professional experience and opinions. It also takes into account the diverse viewpoints held by the Android developer community and the ongoing revision of the Google for Android instructions. I must be clear that while I might not have mentioned some extremely intriguing tools, patterns, or architectures, that does not indicate that there aren't any more intriguing options for creating Android applications. What is android? Google created the open-source Android operating system, which is based on the Linux kernel. It is utilized in a wide range of gadgets, such as smartwatches, tablets, TVs, and smartphones. According to a statcounter research using data from a sample of the last 12 months, Android now has a market share of 71.96% for mobile operating systems. After that, I'll include a number of resources that I believe are crucial for creating cutting-edge Android applications, including tools, libraries, architectures, manuals, and other utilities. Kotlin JetBrains created the programming language Kotlin. Google, who made the official announcement in May 2017 (see published here), has recommended it. It is a cutting-edge programming language that can operate on the JVM and is compatible with Java, which has sped up the adoption of Android application development. Consider Kotlin as your first option Android app development whether you are new to Android or not; don't go against the flow. This strategy was disclosed by Google at Google I/O 2019. You may leverage all the new language features, such as the strength of Coroutines and the utilization of contemporary libraries created for the Android ecosystem, using Kotlin. Jetpack Compose The Kotlin programming language is used by Jetpack Compose, a component of the Android Jetpack library, to quickly generate a native user interface. Additionally, it connects with other libraries included with the Android Jetpack, such LiveData and ViewModel, to make it simpler to create responsive and enduring Android applications. • Jetpack Compose's main features include the following: • Declarative user interface. • widgets that are adaptable. • simple integration with current code. • instant preview. • enhanced capability. • Resources: • Authenticated records. • Kotlin Compatibility Map Compose • Roadmap - Jetpack Compose • Course Android Jetpack In order to free up their time to work on the code they are passionate about, developers may focus on writing code that works reliably across Android versions and devices with the aid of the Jetpack library suite. Its most typical tools include: • ViewModel • Room • DataStore • WorkManager • Navigation Material Design The best practices of user interface design are supported by the flexible system of rules, elements, and tools known as Material

1. Welcome to
What is website development?
Modern Android Development in 2023
Hello everyone, today I'm going to show you how to create Android apps using
the newest trends for 2023.
Disclaimer
This essay is based on my professional experience and opinions. It also takes into
account the diverse viewpoints held by the Android developer community and
the ongoing revision of the Google for Android instructions.
I must be clear that while I might not have mentioned some extremely intriguing
tools, patterns, or architectures, that does not indicate that there aren't any more
intriguing options for creating Android applications.

2. What is android?
Google created the open-source Android operating system, which is based on the
Linux kernel. It is utilized in a wide range of gadgets, such as smartwatches,
tablets, TVs, and smartphones.
According to a statcounter research using data from a sample of the last 12
months, Android now has a market share of 71.96% for mobile operating systems.
After that, I'll include a number of resources that I believe are crucial for creating
cutting-edge Android applications, including tools, libraries, architectures,
manuals, and other utilities.
Kotlin
JetBrains created the programming language Kotlin. Google, who made the
official announcement in May 2017 (see published here), has recommended it. It
is a cutting-edge programming language that can operate on the JVM and is
compatible with Java, which has sped up the adoption of Android application
development.
Consider Kotlin as your first option Android app development whether you are
new to Android or not; don't go against the flow. This strategy was disclosed by
Google at Google I/O 2019. You may leverage all the new language features, such
as the strength of Coroutines and the utilization of contemporary libraries created
for the Android ecosystem, using Kotlin.
Jetpack Compose
The Kotlin programming language is used by Jetpack Compose, a component of
the Android Jetpack library, to quickly generate a native user interface.
Additionally, it connects with other libraries included with the Android Jetpack,
such LiveData and ViewModel, to make it simpler to create responsive and
enduring Android applications.
 Jetpack Compose's main features include the following:

3.  Declarative user interface.
 widgets that are adaptable.
 simple integration with current code.
 instant preview.
 enhanced capability.
 Resources:
 Authenticated records.
 Kotlin Compatibility Map Compose
 Roadmap - Jetpack Compose
 Course
Android Jetpack
In order to free up their time to work on the code they are passionate about,
developers may focus on writing code that works reliably across Android versions
and devices with the aid of the Jetpack library suite.
Its most typical tools include:
 ViewModel
 Room
 DataStore
 WorkManager
 Navigation

4. Material Design
The best practices of user interface design are supported by the flexible system of
rules, elements, and tools known as Material Design. Material Design, which is
supported by open-source technology, facilitates developer and designer
cooperation and aids teams in producing stunning products quickly.
We will have a framework to work with while we develop our UI/UX for Android,
Flutter, and the Web thanks to Material Design, which is supported by designers
and developers from Google.
The most recent iteration of Material Design is 3, which you can view here.
Clean Architecture
Robert C. Martin established the idea of "Clean Architecture". It is based on the
partitioning of duties into several levels within the software.
 Characteristics
 without regard to Frameworks.
 Testable.
 without regard to UI.
 without regard to a database.
 independent of any outside organization.
Dependency Principle
The Dependency Rule is the guiding principle that makes this design function.
According to this rule, dependencies in source code can only point inward. An
inner circle cannot have any knowledge of an outside circle's activities. In
particular, the code in the inner circle must not mention the name of something
declared in the outer circle. This comprises all named software entities, such as
functions, classes, variables, etc.
Android's clean architecture

5.  Activities, fragments, view models, and other view components are used in
the presentation.
 Use Cases, Entities, Repositories, and other domain-specific elements.
 Implementations of repositories, mappers, DTOs, etc.
Patterns of Architecture for the Presentation Layer
An architecture pattern is a higher-level approach intended to aid in the design of
a software architecture. It is distinguished by offering a fix within a reusable
framework for typical architectural issues. Architectural patterns are comparable
to design patterns, but they are more expansive and focus on broader systemic
issues, such as the link between components, the general structure of the system,
and the management of data.
We have several architecture patterns in the Presentation layer, and I'd like to call
attention to the following:
MVI MVVM
Due to the abundance of material available online, I won't go into detail about
each one.
Relying Injection
A client can receive its dependencies from an external source rather than
developing them themselves thanks to the software design pattern known as
dependency injection. Inversion of Control (IoC) between objects and their
dependencies is achieved using this technique.
Modularization
A software design strategy called modularization enables you to split an
application into distinct modules, each with its own functionality and
accountability.
Reasons to modularize

6. Reusability: Independent modules allow for reuse in other application
components as well as in other applications.
Strict visibility control: Modules make it simple to manage what other sections of
your codebase are exposed to.
Delivery that is customizable: Play Feature Delivery makes use of the
sophisticated capabilities of app bundles to offer specific aspects of your app
conditionally or upon request.
Scalability: Independent modules allow for the addition or removal of
functionalities without affecting other areas of the program.
Maintenance is made simpler by segmenting the application into independent
modules, each of which has a distinct purpose and accountability. This makes the
code simpler to comprehend and maintain.
Testability: Independent modules allow for isolation testing, which makes it
simple to find and correct issues.
Modularization aids in the application's architecture enhancement by allowing for
better code organization and structure.
Collaboration is improved because independent modules allow programmers to
work on various components of the application simultaneously and
independently.

7. Build Time: By utilizing modularity, some Gradle functions, such incremental
build, build cache, and parallel build, can enhance build performance.
Serialization
In this section, I'd like to highlight two, in my opinion, crucial tools: The Kotlin
team at Jetbrain's bet, Moshi, is frequently used in conjunction with Retrofit and
Kotlin Serialization.
 Moshi
 Serialization in Kotlin
You can convert objects to JSON or another serialization format and vice versa
using the serialization/deserialization tools Moshi and Kotlin Serialization for
Kotlin and Java. Both offer an intuitive user interface designed for use in desktop
and mobile applications. While Kotlin Serialization supports a number of
serialization formats, including JSON, Moshi primarily focuses on JSON
serialization.
Adding an image
Kotlin Coroutines are our first choice when discussing reactive programming and
asynchronous processes; with the help of Flow and Suspension Functions, we can
meet all of these requirements. But I think it's important to emphasize in this part
how important RxJava is for creating Android apps as well. For those of us who
have been working with Android for a few years, we are aware of the tremendous
power and wide range of capabilities that RxJava offers for interacting with data
streams. I still think RxJava is a worthwhile alternative to take into account right
now.
nearby store
Possessing the capacity to store data locally, such as cached data or certain
session data, is crucial for developing mobile applications. Based on your
application's requirements, it's critical to select the best storage choice. We could

8. keep organized data in a database or unstructured data like key-value pairs.
Remember that this point only refers to the instruments that enable us to
preserve data; it does not discuss all the possible local storage options (such as
file storage).
R8 improvements
The Java bytecode for your project is converted into the DEX format, which is
supported by the Android operating system, by the default compiler R8. By
reducing the names of the classes and their attributes and removing superfluous
code and resources from the project, it is a tool that aids in the obfuscation and
reduction of the code of our program. Check out the Android documentation on
how to optimize, shrink, and conceal your app for additional information.
Adaptive designs
We require tools that enable us to work with our Android applications tailored to
various screen types due to the increase in the use of mobile devices with diverse
form factors. Because of this, Android offers us Window Size Classes, which are,
to put it simply, three sizable sets of screen formats that serve as milestones
while we create our designs. By doing this, we avoid the difficulty of considering
numerous screen designs and instead limit our options to three groups: Compat,
Medium, and Expanded.

9. Performance
We must make sure that the user experience is improved while creating Android
applications, not just at the start but also when the application is being used. Due
to the importance of having tools that enable us to undertake preventive analysis
and ongoing monitoring of situations that can affect the performance of the
application, the following list of tools is provided to assist you:
 Baseline Benchmark Profiles App Launch
 Monitoring Firebase Performance
 JankStats database
On-Demand Updates
Users that regularly update your software on their devices have access to new
features, performance enhancements, and bug fixes. Other users might need to
be prompted to install updates, even though some users enable background
updates while their device is linked to an unmetered connection. Active users are
prompted to upgrade your app using the Google Play Core libraries feature known
as "in-app updates."
Android 5.0 (API level 21) or higher-powered devices can use the in-app updates
capability. Additionally, only Chrome OS, Android tablets, and Android mobile
devices can receive in-app upgrades.
Internal Reviews
With the Google Play In-App Review API, you can ask customers to rate and
review your app or game without them having to leave it.
The in-app review flow can typically be activated at any point during the user's
experience with your app. The user has the chance to rate your app using the 1 to
5 star system and to leave an optional comment while in the flow. The review is
eventually sent to the Play Store after being filed.

10. There are rigorous criteria that your app should adhere to regarding when to
solicit in-app reviews and the layout of the review prompt in order to safeguard
user privacy and prevent API abuse.
Accessibility
When designing and building software, accessibility is a crucial component that
enables users with accessibility requirements to use the program while also
enhancing their overall user experience. People with vision issues, color blindness,
hearing issues, dexterity issues, and cognitive difficulties are just a few of the
disabilities that this approach tries to improve.
Considerations:
 (Color contrast, Resizable Text) Boost text visibility
 Use sizable, basic controls
 Describe every UI component
The following advice will assist you in creating applications that safeguard the
integrity of the device, the security of the data, and the trust of the user. Security
Security is one, if not the most significant issue, that we must take into account
when developing applications that protect these three factors.

11.  Use EncryptedSharedPreferences and EncryptedFile to encrypt sensitive
data and files
 Apply permissions based on signatures:
 When transferring data across apps that you are in charge of, use
signature-based permissions
 Avoid storing sensitive information directly inside of project repository files
or classes that are needed for your application's settings, such as keys,
tokens, or sensitive data.
Version Guides
The version catalog, which Gradle offers as a standard method of centrally
managing project dependencies, was first experimentally presented in version 7.0
and made public in version 7.4.
Advantage:
 Gradle produces type-safe accessors for each catalog so that you can
quickly add dependencies with IDE autocompletion.
 All projects in a build have access to each catalog. It serves as a central
location to specify a dependency's version and to confirm that any changes
to that version affect all subprojects.
 Dependency bundles are "groups of dependencies" that are frequently
used together and can be declared by catalogs.
 It is feasible to share a dependency's group and name with its actual
version by separating them using version references in catalogs.
Logger
A logger is a software tool used to record data about a program's operation,
including significant events, failures, debug messages, and other data that may
be helpful in identifying issues or comprehending how a program operates.
Loggers can be set up to write messages to a log file, the console, a database,
or by sending the messages to a logging server, among other places.

12. Linter
Linter is a programming tool used to examine program source code to identify
any potential issues or defects. These problems, which can affect the code's
quality and maintainability, can be syntactic, improperly written, lack
documentation, security problems, and other things.
 Ktlint Android Lint Detekt
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