Article Side

Online Article Directory!

Hello Guest! Login or Register to submit articles!

Android Smart Phones – Various Screen Densities

By Alan Smith Subscribe to RSS | November 30th 2011 | Views:
loading
 
  



When developing an application for the Android smart phone you need to consider the hardware as well as the software. When you consider the hardware the two most important things for consideration are the physical display size and the screen density. If you just consider the display size and ignore the screen density the application may not be displayed on the Android phone screen the way you want it to be. Most of the developers refer to the screen density.

What is screen density?

Screen density is the number of pixels on the screen physical area within a specific area. The screen density is shown as DPI which stands for dots per inch.

How does Screen Density defer from Resolution?

Resolution is just the total number of pixels on the physical screen of the device. No other factor like per inch plays any role in the resolution.

What is density independent pixel (DP)?

When you have to define the User Interface of the layout the designer needs to use the virtual pixel unit. This serves the purpose of expressing the dimension of the layout as well as positioning the elements in a way that is independent of screen density.

A single physical pixel on a screen of 160 DPI is considered equivalent to density independent pixel. When you are working on a screen with medium density, this density is considered to be the baseline.

If you want to convert the DP units to screen pixels then first you need to divide the DPI by 160 and multiply the product of this by the DP.

When the user interface (UI) of the application is to be defined it is always better to use the DP. This assures that the UI is displayed properly on the screen with varied densities.

Android has divided the screen densities into four types. They are ldpi (l stands for low), mdpi (m stands for medium), hdpi (h stands for high), and xhdpi (xh stands for extra high).

This information is very important because the graphical assets have to be delivered for different densities. The graphical assets are also called bitmaps. If you are developing an application for the smart phone then the bitmaps should be delivered in at least mdpi or hdpi.

Up and down scaling of the bitmap graphics from the baseline screen layout is required. The baseline is of 320x533. Care should be taken that when the scaling is done the bitmap graphics neither become blurred nor too small.

Now you have four different density sizes and you want the bitmap graphics to be compatible with devices of different screen density. For this it is recommended that you stick to a scaling ration of 3:4:6:8. It is better that the deliverables are set at 72 pixels per inch and then the scaling of the images is done.

Copyright © 2011

Alan Smith - About Author:
Spinx is a Professional Android App Development company; we are expert in Mobile Apps Development includes Android App, iPhone App and Blackberry Apps Development services.

Share on Facebook Tweet It Stumbleupon this post This post is delicious !

Article Source:
http://www.articleside.com/web-design-articles/android-smart-phones-various-screen-densities.htm

Related Web Design Articles Subscribe to RSS

Affordable web development services-cheap yet exclusive
Published by Jerome Smith on June 2nd 2012 | Web Design
In today’s times, nothing in this world can survive without publicity. Everything needs to be adve...
 
Are you getting what exactly you expect from your web development services?
Published by Mansi Gupta on December 14th 2011 | Web Design
Choice of correct technology, development, testing & source control tools, compliant modes of develo...
 
Web design India, effective, stylish and affordable website design and development services
Published by Mark Steven on January 16th 2012 | Web Design
Whether you are an individual needing a basic website of a few pages, a large or small business requ...
 
Why you need to hire a good web development company?
Published by Sitikantha Pattnaik on February 2nd 2012 | Internet Business
A good website is responsible for making or breaking your web business success. So choose wisely the...
 
Website development services by RedBall InfoTech
Published by Redball Infotech on June 1st 2012 | Web Design
Get ready to mark your presence on the World Wide Web with an effective, sound and flawless website....
 
Is WordPress a good CMS for website development?
Published by Mark Wilston on March 16th 2012 | Web Design
Content management systems can be accredited for contributing a great deal towards the entire world ...
 
Mobile Web design development-What You Need to Know
Published by Sitikantha Pattnaik on December 6th 2011 | Web Design
To beat the web development competition levels many web development companies are trying their hand ...
 
How to Avoid Risks associated with offshore web development services
Published by Alicia Savino on August 8th 2012 | Web Design
Everyone knows that there are many benefits of outsourcing business requirements to offshore vendors...
 
Comprehension the significance of web development provided by Five Rivers
Published by Five Rivers on February 2nd 2012 | Web Design
Five Rivers has developed remedies for various organizations such as professional medical, progressi...
 
Advantages of Services of web development company India
Published by Infoware Solutions on April 14th 2012 | Web Design
A website development company develops most up-to-date better equipments to expand diverse web funct...
 
Get the best services in web designing and web site development in Australia
Published by Paul on December 6th 2011 | Web Design
Melbourne Web is one of the most reliable website hosting Australia Companies....
 
Need of PHP programming in custom web design development services
Published by Sitikantha Pattnaik on January 27th 2012 | Web Design
To develop your website and to make your website more user-friendly and impressive, use PHP programm...
 
Web development tips – Optimizing Images for SEO
Published by Jackob Willson on February 8th 2012 | Web Design
Optimizing your images is as crucial to your web development project as any other exercise. Provide ...
 
Cost Effective Solution to PHP programming and Web design development
Published by Sitikantha Pattnaik on January 9th 2012 | Internet Business
Today in web design development services PHP programming is playing a great role, which permits user...
 
Useful features of web development services
Published by Adytum on March 2nd 2012 | Web Design
With the advancement of technology, the demand for web development services is increasing at a very ...
 
Web services development Guide
Published by Sana Shekh on December 10th 2011 | Web Design
Techliance Website Designing comfort offers thorough your make website design and development needs ...
 
Website development tips to design a search engine friendly website
Published by Ram Shrma on June 11th 2012 | Web Design
These Website development and designing tips will help you in the process of setting up a website bu...
 
Benefits of selecting best web development firm
Published by Boris Kotevski on January 11th 2012 | Internet Business
Online business success needs thriving utilization of web design development services at your websit...
 
The Undeniable Importance of website development Sydney services
Published by Boris Kotevski on January 5th 2012 | Internet Business
Website development Sydney is becoming a popular medium for introducing your small world and profess...
 
Features of WordPress as a free website development platform
Published by Mark Wilston on March 19th 2012 | Web Design
WordPress is a freely available open source content management system. Basically it started off stri...