The 25 Best Android Books for Android App Developer in 2020

Android, the Operating System backed by Google since 2005,
is a revolution in the smartphone world. This modified-Linux-Kernel
based OS is now the most powerful and dominating system around the
globe. The importance of Android is needless to tell when 85% of
the total smartphone users are using Android. Thus the benefit of
learning Android is enormous; again, it is tricky to learn as it
has got vast exposure and competition. Thereby, one should be very
specific while choosing Android books to learn this platform.
However, we are here to help them find those
easily. 

Best Android Books


Best Android Books for Android App DeveloperHere we are gathering some of the best android books
for the developers who are interested in the Android platform. All
these books are full of information, innovative in their way of
teaching, rich in resources. In our description of any of the
books, we have tried to highlight the essential points contained in
the book. Before going to the talk about the books, let us remind
you of a very important point, you must have a clear
knowledge of Java
[1]
before you deal with Android. We hope you are already here with
that.

1. Android Developer Fundamentals
Course


The Google Developer Training Team is the creator of this
book. The book is considered as a training coursebook. Before
starting this book, one should be experienced in Java Programming
language. The book mainly covers five teaching elements, as you see
in the contents. However, besides these contents, there are
tutorials on Text and Scrolling, Testing Your App, User Input
Controls, Menus, Testing the User Interface, and many more
must-know things to learn Android.

Table of Contents

  • UNIT 1: Get Started

Build Your First App Activities
Testing, Debugging and Using Support Libraries

  • UNIT 2: User Experience

User INteraction Delightful User
Experience
Testing Your UI

  • UNIT 3: Working in the Background

Background Tasks Triggering, Scheduling and
Optimizing Background Tasks

  • UNIT 4: All About Data

Preferences and Setting Storing Data Using
SQLite
Sharing Data with Content Providers
Loading data Using Loaders

  • UNIT 5: What’s Next?

Permissions, Performance and Security Fire as
and AdMob
Publish

Download
Book
[2]

2. Android App Development in Android
Studio


This book aims at beginners in the Android field with a
view to teaching the basics of Android. However, the learners
should be experienced in the field of Java as well as the book has
the chemistry of Java and Android. Firstly this Android book
introduces in general Android and then the way to set the
environment for development. Gradually it will take you to teach
Test Drive and must know Java elements. After that, with all these
knowledge, you will be experimenting with six different interesting
apps.

Table of Contents

  • The Android Operating System
  • Setting Up Your Development Environment
  • Test Drive: the Hello World App
  • Java Basics
  • Android App Number 1: Red/ Blue Lighthead
  • Android App Number 2: Body Mass Index (BMI)
    Calculator
  • Android App Number 3: Simple Dice Roller
  • Android App Number 4: The Compass
  • Android App Number 5: Show My Location Using GPS and
    Maps
  • Android App Number 6: S.O.S Message Sender

Download
Book
[3]

3. Android Application
Development


Before going in depth of this book, we want to tell you
that this book is not for the amateurs. Rather those who are
experienced in software development and want to develop android
mobile apps, this is one of the best Android books for them. You
must have experience on Java, UI, and familiar technologies.
Besides the contents shown, the book tells why to choose Android,
the MJAndroid world, different tools, testing of applications,
databases, Android GUI Architecture, and many more
projects.

Table of Contents

  • Getting to Know Android
  • Setting Up Your Android Development
    Environment
  • Using the Android Development Environment for Real
    Application
  • Under the Covers: Startup Code and Resources in the
    MJAndroid Application
  • Debugging Android Application
  • Signing and Publishing Your Application 
  • Persistent Data Storage: SQLite Databases and Content
    Providers
  • Location and Mapping
  • Building a View
  • A Widget Bestiary
  • Drawing 2D and 3D Graphics
  • Inter-Process Communication
  • Simple PHone Calls
  • Telephony State Information and Android Telephony
    Classes

Download Book
[4]

4. Android Application Development
Tutorials Point


Firstly the book will tell you the necessity of Android.
Then it will try to attract your mind by appraising the features of
android. In the following chapters, different settings like SDK,
IDE,  Virtual Devices are discussed. A very important
discussion on Linux kernel is well mentioned in the book. The book
is one of the best Android books to learn Android by the beginners
because of its innovative way of teaching.

Table of Contents

  • Overview, Environment Setup,
    Architecture 
  • Applications Component , Yellow World Example
  • Organizing and Accessing the Resources
  • Activities, Services, Content Providers
  • Fragments, Intents and Filters
  • UI Layouts ,UI Control, Event Handling
  • Styles and Themes, Custom Components 
  • Drag and Drop, Notification, Location-Based
    Services 
  • Sending Email, Sending SMS, Phone Calls
  • Publishing Android Application, Alert Dialog
    Tutorial 
  • Animation, Audio Capture, Audio management
  • Autocomplete, Best Practices
  • Bluetooth, Camera, Clipboard
  • Custom Fonts, Data Backup, Developer Tools,
    Emulator
  • Facebook Integration, Gesture, Google Maps
  • Image Effects, Image Switcher, Internal
    Storage
  • Jet Player, JSON Parser, Linked Integration, Loading
    Spinner
  • Localisation, Login Screen, Media Player,
    Multitouch
  • Navigation

Download
Book
[5]

5. Android Application Secure Design/
Secure Coding Guidebook


We believe you heard about the famous Japan Smartphone
Security Association. Yes, this book was developed by them. Besides
the contents below, the book also tells Literature on Android
Secure Coding, steps to Install Sample Codes into Android Studio,
Using Notifications, Using Web Views, etc. You will also come to
know how to create password input screens, how to communicate via
HTTPS, the way to handle privacy data, etc. The book is outstanding
for learning Android.

Table of Contents

  • Building a Secure Smartphone Society
  • Timely Feedback on a Regular Basis Through the Beta
    Version
  • Composition of the Guidebook
  • Developers Context
  • Sample, Code, Rule Book, Advanced Topics
  • Basic Knowledge of Secure Design and Secure
    Coding
  • Android Application Security
  • Handling Input Data Carefully and Securely
  • Using Technology in a Safe Way
  • Creating/ Using Activities
  • Receiving/ Sending Broadcasts
  • How to Use Security Functions
  • How to Use Security Functions
  • Creating Password Input Screens
  • Permission and Protection Level
  • Difficult Problems
  • Risk of Information Leakage from Clipboard

Download
Book
[6]

6. Android Cookbook


The book demands you to know Java Standard Edition API
after you know Java properly. Firstly you will know how to develop
simple applications like “Hello World”. Then you will start
learning to develop standard applications with success followed by
testing those. It contains a variety of topics related to graphics.
You will be a master on GUI after reading the book. Besides, the
book has covered telephone apps, gaming and animation and many
essential parts of Android. By covering all possible corners, this
book has become one of the best Android books. 

Table of Contents

  • Getting Started
  • Designing a Successful Application
  • Testing
  • Content Providers
  • Graphics
  • Graphical User Interface
  • GUI: List View
  • Multimedia
  • Data Persistence
  • Telephone Applications
  • Gaming and Animation
  • Social Networking
  • Location and Map Applications
  • Accelerometer
  • Bluetooth
  • System and Device Control
  • Other Programming Languages
  • Internationalisation
  • Packaging, Deploying, and Selling
  • Other

Download
Book
[7]

7. Android Hacker’s Handbook


The book is a bible for the security reason of Android
where the book goes through all the security aspects that Android
may face. You will understand the total ecosystem of Android and
security design with the architecture of Android. How the attacks
take place in kernel, hardware, etc are made clear with the
solutions to get rid of those. The Analyzing, processing and the
solutions against the attacks has made this book one of the best
Android books for security purposes. 

Table of Contents

  • Looking at the Ecosystem
  • Android Security Design and Architecture
  • Rooting Your Device
  • Reviewing Application Security
  • Understanding Android’s Attack Surface
  • Finding Vulnerabilities with Fuzz Testing
  • Debugging and Analyzing Vulnerabilities
  • Exploiting User Space Software
  • Return Oriented Programming
  • Hacking and Attacking the Kernel
  • Attacking the Radio Interface Layer
  • Exploit Mitigations
  • Hardware Attacks 
  • Tool Catalog
  • Open Source Repositories

Download
Book
[8]

8. Android Internals: A Confectioner’s
Cookbook


The book is just an outstanding creation where all the
chapters are independent and you can just read randomly or
cover-to-cover. The first chapter gives you the proper and detailed
introduction on Android including history and evolution. Gradually
the book brings the technical parts like Filesystem. Then the
dissection of processor boot, backup, etc appears. Besides the
shown contents it also carries, Android File System, Graphics and
Media service, Tracing System Calls and many security
issues. 

Table of Contents

  • Getting Started

Android Version History Android vs Linux
Android Derivatives

  • Partition and Filesystem

Partitions and Android File System Contents
Protected Filesystems

  • Boot, Backup and Recovery

Android Images The Boot Process, Shutdown and
Reboot

  • Init

The Roles and Responsibilities of Init Init and
USB
The Other Roles of Init

  • Daemons

Core Services Network Services

  • The Framework Service Architecture

Revisiting Service Manager The Binder

  • Android Through a Linux Lens

User Mode Memory Management Tracing System
Calls

  • Security

The Modeling Mobile Security Security at the
Linux Level

Download
Book
[9]

9. Android OS Security: Risks and
Limitations, A Practical Evaluation


Among all Android books which are written for security
purposes, this book is a masterpiece. After a well introduction the
platform and the security aspects are the main discussions in the
first chapter. You will learn the remote installation and in
installation, patch process, SEAndroid, Exploit Execution
Framework, Mobile Botnets, etc. In the Threat chapter you will come
to know about both private and corporate threats. 

Table of Contents

  • Android and Android Security
  • Exploitable and Attack Vectors
  • Propagation Scenarios
  • Threat Scenarios
  • Conclusion and Advisory

Download
Book
[10]

10. Android Programming
Cookbook


Android Programming Cookbook is an all-in-one book that
serves the purpose for newbies, amateurs, and experts. In the book
you will find different project structures and tutorials where you
can create new Android studio projects and many more similar to
this. Some very essential elements of Android, like map, Bluetooth,
etc are given as projects. To learn android in detail, this book is
just perfect.

Table of Contents

  • Android Tutorial for Beginners
  • Android Project Migration from Eclipse to Android Studio
  • Android Google Map v2 Tutorial
  • Android Start Service on Book Example
  • Android Bluetooth Connection Example
  • Android Multitouch Example
  • Android StackView Example
  • Android ViewPager Example

Download
Book
[11]

11. Android Programming for
Beginners


Android Programming for Beginners is the book that
enlightens you about how Java and Android is doing as a single
entity. The development and elements of Android are discussed in
the first chapter. Subsequently making apps, exploring studios of
android, different layouts of design, different coding with Java
comes with detailed elaboration. The very elaborate discussion
about all necessary chapters has made the book a unique one from
all other Android books.

Table of Contents

  • The First App
  • Java- First Contact
  • Exploring Android Studio, Designing Layouts, and Real
    World Layouts
  • The Life and Time of an Android App
  • Coding in Java Part 1: Variables, Decisions, and
    Loops
  • Coding with Java Part 2: Methods, Object- Oriented
    Programming
  • Everything’s as a Class and Widget Mania
  • Having a Dialogue with the User
  • Handling and Displaying Arrays of Data
  • Handling and Displaying Notes in Note to Self
  • Android Intent and Persistence, UI Animations
  • Sound FX and Supporting Different Versions of
    Android
  • Design Patterns, Fragments, and the Real
    World
  • Using Multiple Fragments, Paging and Swiping
  • Navigation Drawer and Where It’s Snap
  • Capturing Images, Using SQLite Databases in Our
    Apps
  • Adding a Database to Where It’s Snap
  • Integrating Google Maps and GPS Locations
  • Upgrading SQLite – Adding Locations and Maps
  • Going Local- Hola!
  • Threads, Touches, Drawing, and a Simple
    Game 
  • Publishing Apps and Before You Go

Download
Book
[12]

12. Android Security Internals


Android Security Internals is a good book to introduce the
security system to the beginners in a chronological and exact
fashion. It will take you to the security level on the Linux Kernel
level. The precaution of Filesystem, permission management, etc.
have some important topics of discussion in the book. Additional
topics like App signature checks have been discussed at the end of
the book.

Table of Contents

  • Android
  • Android Stack
  • Android General Security Description
  • Android Security on the Linux Kernel Level
  • Application Sandbox
  • Permission Enforcement on the Linux Kernel
    Level
  • Android Security on the Native Userspace
    Level
  • Android Booting Process
  • Android File System
  • Android Security on the framework Level
  • Android Binder Framework
  • Android Permissions
  • Permissions Enforcement on the Application Framework
    level 
  • Android Security on the Application Level
  • Application Components
  • Permissions on the Application Level
  • Other Topics on Android Security

Download Book
[13]

13. Android Studio 3.5 Development
Essentials


This book is unlike other Android books in the sense that
the book gives you a tour in all possible ways that Android may
reach. The installation procedure of the environment in the Studio
for developing in all possible OS is given in the initial chapters
of the book. Topics of the Emulator, different hardware like a
battery, microphone, camera, etc. are well covered. It has not left
the lifecycle of different entities, menu to overflow,
fingerprinting system, and all other modern facilities of android
in its discussion.

Table of Contents 

  • Setting up an Android Development Environment
  • Creating an Example Android App in Android
    Studio
  • Creating an Android Virtual Device (ADV) in Android
    Studio
  • Using and Configuration the Android Studio AVD
    Emulator
  • A Tour of the Android Studio User Interface
  • Testing Android Studio Apps on a Physical Android
    Device
  • The Basic of the Android Studio code Editor
  • An Overview of the Android Architecture
  • The Anatomy of Android Application
  • Understanding Android Application and Activity
    Lifecycle
  • Handling Android Activity State Changes
  • Android Activity State Changes by Example
  • Saving and Restoring the State of an Android
    Activity
  • Understanding Android Views, View Groups, and
    Layouts.
  • A Guide to the Android Studio Layout Editor
    Tool
  • A Guide to the Android ConstrainLayout
  • A Guide to Use ConstrainLayout in Android
    Studio
  • Working with ConstrainLayout Chains and Ratios in Android
    Studio
  • An Android Studio Layout Editor ConstrainLayout
    Tutorial
  • Manual XML Layout Design in Android Studio
  • And more 65 Topic……..

Download
Book
[14]

14. Application Security for the
Android Platform


Android being very popular is always a subject of attack
from different corners. Thereby with an aim to make a rigid, stable
and safe app experience in the Android platform, this book was
written. The book covers the architecture of Android, permission
systems, different security systems, protection process of data,
security of different kinds of interactions, etc. To learn Android
Security system, the book is well suggested by many of the tech
specialists on Android Platform.

Table of Contents

  • Intro and Application Security: Why You Should
    Care
  • Android Architecture
  • The Linux Security Model
  • The Resulting Android Security Model
  • Application Permissions
  • Android Permission Basics
  • Using rEstricted System APIs and the User
    Experience
  • Component Security and Permissions
  • Protecting Stored Data
  • The threats and Vulnerabilities Against Stored
    Data
  • Securing Server Interactions
  • Key Themes
  • It’s All About Risk
  • The Principle of Least Privilege

Download
Book
[15]

15. Beginning Android Programming:
Develop and Design


The book is written for those people who are highly
interested to do something with programming and show other peoples.
However, people with no touch with Java and experts engineers on
android are not the readers of this book. You will be learning
simple and root android development, application creating that has
UI and usability in both phone and tablets. Creating interfaces,
navigating in advance level, building applications and learning to
publish those are some of the making topics in this android
book.

Table of Contents

  • Getting Started with Android
  • Exploring the Application Basics
  • Creating User Interfaces
  • Acquiring Data
  • Adapters, List Views, And Lists
  • Background Services
  • Many Devices, One Application
  • Movies and Music
  • Determining Locations and Using Maps
  • Tablets, Fragments, and Action Bars, Oh My
  • Advanced Navigation
  • Publishing Your Application
  • Gradle, The New Build System

Download Book [16]

16. Beginning Android Programming with
Android Studio


Like many other android books, this book is also for the
enthusiast android developers who want to start from the beginning
and reach a standard. The book covers the description and condition
of the Android Operating System in the present context at the first
chapter. The next chapter covers some of the very essential and
important elements of Android Studio. Gradually the UI, displaying
images, content providers, networking, etc topics comes in the
right sequence. 

Table of Contents

  • Getting Started with Android Programming
  • Using Android Studio for Android Development
  • Activities, Fragments, and Intents
  • Getting to Know the Android User Interface
  • Designing Your User Interface with Views
  • Displaying Pictures and Menus with Views
  • Data Persistence
  • Content Providers
  • Messaging
  • Location-Based Services
  • Networking 
  • Developing Android Services

Download
Book
[17]

17. Bulletproof Android


Bulletproof Android gives the promise to make developers
who can manage to develop secure apps for the Android platform. The
book has covered PCI MObile Payment Acceptance Security, google
security, OWASP Risks, and some guidelines in the first chapter.
Some tips and guidelines are given in the next chapter with which
you can protect your creation of codes. Chronologically the
probable risks, protection procedures, guidelines of network,
database, etc are discussed. However, this book does not discuss
the basics like other Android books.

Table of Content

  • Android Security Issues
  • Protecting Your Code
  • Authentication
  • Network Communication
  • Android Databases
  • Web Server Attacks
  • Third Party Library Integration
  • Device Security
  • The Future

Download
Book
[18]

18. Developing Secure Mobile
Applications for Android


Developing Secure Mobile Applications for Android is the
last collection of Android books regarding the security of
Android apps[19]. It is the only book
where there is a guideline to the responsibilities of the
developers to keep applications safe. The book covers Android
permissions review, Security by caller permission, how to avoid SQL
injections, and many interesting android terms. The book is a nice
piece to learn android with security as a responsible
developer.

Download Book
[20]

19. Embedded Android


Embedded Android is the book for those developers who are
very specific in developing apps for some specific users. The book
recommends not to start if you are looking for embedded Linux or
any other app developments. The book, in general, contains as you
see below and Legal Framework, Hardware and compliance
requirements, view of the developers, native user-space, getting
AOSP, the way to run Android, etc as some of the important
subtopics.

Table of Contents

  • History
  • Features and Characteristics
  • Development Model
  • Internals Primer
  • App Developer’s View
  • App Development Tools
  • AOSP Jump-Start
  • Development Host Setup
  • Getting the AOSP
  • The Build System
  • Comparison with Other Build System
  • Architecture 
  • Hardware Primer
  • Native User-Space
  • File system
  • Android Framework

Download
Book
[21]

20. Head First Android
Development


So far we have discussed many of the Android books which
are text-heavy books. Now, this is a special book to learn Android
with an interesting visual approach. In its scientific approach it
contains how to create apps, how to organise them, designing
materials, navigations, actions in bars and many more. This will
also allow you to get oriented with Java so that the book becomes
totally easy to understand.

Table of Contents

  • Getting Started: Diving In
  • Building Interactive Apps: Apps that do
    Something
  • Multiple Activities Lifecycle: BEing and
    Activity
  • The User Interface: Enjoy the View
  • Listviews and Adapters: Getting Organized
  • Fragments: make it Modular
  • Nested Fragments: Dealing With Children
  • Action Bars: Taking Shortcuts
  • Navigation Drawers: Going Places
  • SQLite Databases: Fire Up the Database
  • Cursor and AsyncTasks: Connecting to
    Databases
  • Services: At Your Services
  • Material Design: Living in a Material World
  • ART: The Android Runtime
  • ADB: the Android Debug Bridge
  • The Emulator: The Android Emulator
  • Leftovers: The Top Ten Things

Download
Book
[22]

21. Learning Android Studio


Learning Android Studio is written with a view to make the
revolutionary Android studio easy and well understood to the
developers. Firstly you will get a precious introduction about the
studio. Gradually you will learn how to install, navigate and
customise the studio for your work. Besides, you will come to know
how to design different layouts, way to debug, different tools
etc. 

Table of Contents

  • Introduction to Android Studio
  • Navigating Android Studio
  • Programming in Android Studio
  • Refactoring Code
  • Reminders Lab: Part 1
  • Reminders Lab: Part 2
  • Introduction Git
  • Designing Layouts
  • Currencies Lab: Part 1
  • Currencies Lab: Part 2
  • Testing and Analyzing
  • Debugging
  • Gradle
  • More SDK Tools
  • Android Wear Lab
  • Customising Android Studio

Download
Book
[23]

22. Learning Pentesting for Android
Devices


Learning Pentesting for Android Devices starts with some
security issues related to android. Thereafter you will get how to
analyse traffic in devices. It will make your SQLite learning easy
in a very interesting way. However, the book requires some
important things like SDK, APKtool, JD-GUI, Dex2Jar, Python 3.0,
AFlogic, etc before you start reading. These things are however not
available in the book but links are provided so that you can go
through if you haven not. 

Table of Contents

  • Getting Started with Android Security
  • Preparing the Battlefield 
  • Reversing and Auditing Android Apps
  • Traffic Analysis for Android Devices
  • Android Forensics
  • Playing with SQLite
  • Lesser-Known Android Attacks
  • ARM Exploitation
  • Writing the Pentest Report

Download
Book
[24]

23. Professional Android 4 Application
Development


Professional Android 4 Application Development book was
written for those interested people who are likely to create
applications. The book will firstly orientate you with the Android
world and its fitness in the mobile devices. Then the process to
become a developer with different essential topics like building
UIs, the procedure to work in the background, sensors of hardwares,
etc. Finally some of the essential elements of mobile like
bluetooth, networks, WiFi, etc are discussed. 

Table of Contents

  • Hello Android
  • Getting Started
  • Creating Applications and Activities
  • Building User Interfaces
  • Intents and Broadcast Receivers 
  • Using Internet Resources
  • Files, Saving State, and References
  • Databases and Providers
  • Working in the Background
  • Expanding the User Experience
  • Hardware Sensors
  • Maps, Geocoding, and Using the Camera
  • Bluetooth, NFC, Networks, and Wi-Fi
  • Telephony and SMS
  • Advanced Android Development
  • Monetising, Promoting, and Distributing
    Applications

Download Book
[25]

24. Programming Android


If you have knowledge on either Java or Objective C then
this book will help you to learn android easily. The main focus of
this book is on different tools and essentials of Android
programming. In the beginning the book offers a good knowledge on
java and iOS and basics of Android programming. The framework, UI,
development etc are discussed in the next chapter. Finally the book
ends with some of the practices where you can increase your skills
properly.

Table of Contents 

  • Tools and Basics

Installing the Android SDK and Prerequisites 
Java for Android The Ingredients of an Android
Application
Getting Your Applications into Users’
hands
Eclipse for Android Software Development

  • About the Android Framework

Building a View Fragments and Multiplatform
Support
Handling Persisting Data

  • A Skeleton Application for Android

A Framework for a Well-Behaved Application
Building a User Interface Using Content
Providers
A Content Provider as a Facade for a RESTful
Web Service

  • Advanced Topics

Search Location and Mapping
Multimedia Sensor, NFC, Speech, Gestures, and
Accessibility
Communication, Identity, Sync, and
Social Media
The Android Native Development Kit
(NDK)

Download
Book
[26]

25. The Busy Coder’s Guide to Android
Development


Like other Android books, The Busy Coder’s Guide to
Android Development is written with a view to improving the
development of Android apps. The book teaches the structure of
Android, the overview, different elements, projects, etc in the
beginning. Different types of widgets and their usages, browsers,
messaging, internet and communications, etc have come subsequently
in this book.  

Table of Contents

  • The Big Picture and Project Structure
  • Inside Manifest and Creating a Skeleton
    Application
  • Using XML Based Layouts, Employing Basic
    Widgets
  • Working with Containers, Using Selection
    Widgets
  • Employing Fancy Widgets and Containers
  • Applying Menus, Embedded the WebKit Browser
  • Showing Pop-Up Messages, Dealing with Threads
  • Heading Active Lifecycle Events, Using
    Preferences
  • Accessing Files, Working with Resources
  • Managing and Accessing Local Databases
  • Leveraging Java Libraries, Communicating via the
    Internet
  • Creating Internet Filters, Launching Activities and
    Sub-Activities
  • Finding Available Actions via Introspection, Using a
    Content Provider
  • Building a content Provider, Requesting and Requiring
    Permissions
  • Creating a Service, Invoking a Service
  • Alerting Users Via Notifications, Accessing
    Location-Based Services
  • Mapping with MapView and MapActivity
  • Playing Media, Handling Telephone Calls
  • Searching with SearchManager
  • The TourIt Sample Application

Download
Book
[27]

Finally, Insight


The books mentioned above cover the teaching, tutorials,
tips and guidelines for all levels of readers. Some of the books
are specially for the experts, some are common for all and some of
them are totally for the newbies. However, we believe the contents
and descriptions of each book helped you to find the perfect match
for you. 

Please share our efforts with others and help them get
these books easily. If you have any suggestions please let us know
by commenting below. Your valuable suggestions will help us to
improve. Finally we wish your success in the field of
Android

Read more

Leave a Reply