android development basics

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Android Development

Basics

Pramesh Gautam

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Topics

● Introduction

● Development basics

● Demonstration

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Introduction

● Open source operating system

● Supported by OHA and maintained by google

● Beyond phones

● ART runtime environment

● API level

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Tools Used

● Java

● SQLite

● XML

● gradle(in android studio)

● Eclipse or android studio IDE

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Development

Activity(Details)

Single, focused thing that the user can do.

Layout defined in xml.

Inherits android.app.activity.

Core component of application.

Provides user intrerface.

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Development

● Lifecycle

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Development

Android Manifest

● Every app must have it.

● It names the Java package for the application

● Contains details of every activity.

● Specifies persmission.

● Declares required API.

● Lists libraries that must be linked.

● Includes other spefications of the application.

Project Structure

Shown in android studio

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Layouts

● LinearLayout

● RelativeLayout

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LinearLayout

● A layout that organizes its children into a

single horizontal or vertical row.

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RelativeLayout

● Enables you to specify the location of child

objects relative to each other (child A to the

left of child B) or to the parent (aligned to the

top of the parent).

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Intents

● Message from one activity to another.

● Can be used to link activities.

● Useful to transfer messages between activities.

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Permissions

● Added to allow permissions to android app.

● Defined in manifest.

● Should be chosen carefully to meet

requirements.

Demonstration

Shown in android studio

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Q & A

• Thank you

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