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

 
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...
 
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...
 
Outsource Java development to India
Published by Rajeev Ranjan on June 4th 2012 | Web Design
Being a popular scripting language, JAVA calls for some specific programming antics that have been i...
 
Drupal CMS Solution: an effective CMS for large websites development
Published by Mark Wilston on March 12th 2012 | Web Design
In the present day world, it is important to have a website which is filled with a lot of features a...
 
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 ...
 
Conceptualize web development Sydney services
Published by Boris Kotevski on December 30th 2011 | Internet Business
It is true that, if you are ready with proper concept then web design service Sydney will be easier ...
 
Affordable web development services in Kolkata
Published by Asitava Bose on January 17th 2012 | Internet Business
In modern time all small or big organizations have their own websites. Some of them are well develop...
 
The importance of web development London
Published by LogicSpot on July 9th 2012 | Web Design
In order to get your website noticed what you need is a good web development London. A great website...
 
Follow PSD to WordPress conversion for WordPress website development
Published by Adam Parker on April 4th 2012 | Web Design
WordPress is the simplest and the most popular award winning content management system. It was basic...
 
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...
 
What makes website design different from website development?
Published by Mark Wilston on March 19th 2012 | Web Design
In the field of website design and development, these two terms are often used inter changeably and ...
 
Choose appropriate Joomla web development services company
Published by Blue Shark Solution on August 8th 2012 | Internet Business
Joomla web development organizations are point of conversation now days. Lots of function allows cus...
 
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...
 
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 ...
 
Create your Ecommerce website in Magento for best online store development
Published by Mark Wilston on March 15th 2012 | Web Design
In today's hyper competitive time, it is really very essential for a business to have an efficient a...
 
Web development service for your mid size business
Published by Redball Infotech on April 25th 2012 | Web Design
Everyday millions of people are turning towards the internet to with the hope to bring desirable and...
 
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...
 
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...
 
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 ...