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KING - ANDROID BASICS AND PYTHON CODING EXAMPLES: PROGRAMMING FOR BEGINNERS

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ANDROID BASICS

AND

PYTHON CODING EXAMPLES

PROGRAMMING FOR BEGINNERS

J KING

ANDROID BASICS

PROGRAMMING FOR BEGINNERS

J KING

ANDROID INTRODUCTION

The Android tutorial, also known as the Android Studio tutorial, covers the fundamentals and advanced concepts of Android technology.

Our Android development tutorial is suitable for both beginners and experts.

Android is a full suite of apps for mobile devices such as tablets, laptops, smartphones, e-readers, set-top boxes, and other similar devices.

It includes a linux-based operating system, middleware, and main mobile apps.

It's equivalent to a smartphone operating system.

However, it is not limited to mobile devices. It's now used in a range of products, including phones, tablets, and televisions.

What is Android

It is necessary to understand what android is before learning about all of its topics.

Android is a linux-based software kit and operating system for mobile devices including tablets and smartphones.

It was created by Google and then by the OHA (Open Handset Alliance). While other languages may be used, the Java language is most widely used to write android code.

The Android project's mission is to develop a good real-world app that enhances end users' mobile experience.

Lollipop, Kitkat, Jelly Bean, Ice Cream Sandwich, Froyo, Ecliar, Donut, and other Android code names are addressed on the next page.

Open Handset Alliance

It is a partnership between 84 firms, including Google, Samsung, AKM, Synaptics, KDDI, Garmin, Teleca, Ebay, Intel, and others.

It was founded on November 5, 2007, under the leadership of Google.

It is dedicated to advancing open standards, providing utilities, and deploying Android-based handsets.

Features of Android

Let's look at the features of Android now that we've learned what it is.

The following are some of Android's main features:

1) It is free and open-source software.

2) The Android Platform can be customized by anyone.

3) The user has a wide variety of smartphone apps from which to choose.

4) It has a lot of cool features, such as weather information, an opening screen, and live RSS (Really Simple Syndication) feeds.

It supports SMS and MMS messaging, as well as a web browser, storage (SQLite), networking (GSM, CDMA, Bluetooth, Wi-Fi, and so on), media, and handset style.

Categories of Android applications
  • Entertainment
  • Tools
  • Communication
  • Productivity
  • Personalization
  • Music and Audio
  • Social
  • Media and Video
  • Travel and Local etc.
History of Android

It's fascinating to learn about Android's past and different models. Aestro, Blender, Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwitch, Jelly Bean, KitKat, and Lollipop are some of the latest Android code names. Let's take a look at the past of Android in order.

1) In October of 2003, Andy Rubin founded Android Incorporation in Palo Alto, California, United States.

2) Google purchased android Incorporation on August 17, 2005. Since then, it has been a Google Integration affiliate.

3) Andy Rubin, Rich Miner, Chris White, and Nick Sears are the main employees of Android Incorporation.

4) Initially designed for cameras, but later moved to smart phones due to the low demand for cameras alone.

5) Andy Rubin's colleagues call him "Android" because of his fascination with robots.

6) In 2007, Google announced the development of the Android operating system.

7) HTC released the first Android phone in 2008.

Android versions, name, and API level

Android Architecture The Android architecture also known as the Android - photo 1

Android Architecture The Android architecture also known as the Android - photo 2

Android Architecture The Android architecture also known as the Android - photo 3

Android Architecture

The Android architecture, also known as the Android software stack, is divided into five parts:

  1. linux kernel
  2. native libraries (middleware),
  3. Android Runtime
  4. Application Framework
  5. Applications

1 Linux kernel It is at the root of android architecture that the core of - photo 4

1) Linux kernel

It is at the root of android architecture that the core of android architecture resides.

Device drivers, power management, memory management, device management, and resource access are all handled by the Linux kernel.

2) Native Libraries

Native libraries such as WebKit, OpenGL, FreeType, SQLite, Media, C runtime library (libc), and others are built on top of the Linux kernel.

The WebKit library is in charge of browser support, while SQLite is in charge of databases, FreeType is in charge of font support, and Media is in charge of playing and recording audio and video formats.

3) Android Runtime

There are main libraries and DVM (Dalvik Virtual Machine) in the Android runtime, which are responsible for running android applications.

DVM is similar to JVM, but it is designed specifically for mobile devices. It uses less memory and has a fast response time.

4) Android Framework

The android system sits on top of native libraries and the Android runtime.

Android APIs such as UI (User Interface), telephony, services, places, Content Providers (data), and package managers are all part of the Android system.

It includes a large number of classes and interfaces for developing Android apps.

5) Applications

There are applications that run on top of the Android platform.

The android system, which includes the android runtime and libraries, is used for all applications such as home, touch, settings, games, and browsers.

The linux kernel is used by the Android runtime and native libraries.

Android Core Building Blocks

A component in Android is simply a piece of code with a well-defined life cycle, such as Operation, Receiver, Service, and so on.

Activities, views, intents, utilities, content providers, fragments, and AndroidManifest.xml are the basic building blocks or fundamental components of Android.

Activity

A single screen is represented by an operation, which is a class. In AWT, it's similar to a Picture.

View

A view is a user interface feature such as a button, mark, or text sector. A view is something that you can see.

Intent

Components are invoked using purpose. It's really used for:

  • Start the service
  • Launch an activity
  • Display a web page
  • Display a list of contacts
  • Broadcast a message
  • Dial a phone call etc.
Service

Service is a background operation that can be left running indefinitely.

There are two kinds of programs available. Both nearby and far away Local services can only be accessed from inside the application, while remote services can be accessed from other apps on the same computer.

Content Provider

Data is shared between applications using Content Providers.

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