适用于不同屏幕尺寸的Android应用程序

Question

As i new in android development i just want to know is there any way to develop Android application for different screen sizes ?

help me.

Thank you in advance

Answer 1

Just add this in your project.

res/values/main.xml

res/values-sw600dp/main.xml -> 7+ inches

res/values-sw720dp/main.xml -> 10+ inches Create this folder and just copy your xml file in all the folders.

Answer 2

Put your main.xml in those folders:

 res/values/   //your default values (in your case for phones)

 res/values-large/    //specfic values for relatively big screens

 res/values-xlarge/    //specific values for really big screens

large: Screens that are of similar size to a medium-density VGA screen. The minimum layout size for a large screen is approximately 480x640 dp units. Examples are VGA and WVGA medium density screens.

xlarge: Screens that are considerably larger than the traditional medium-density HVGA screen. The minimum layout size for an xlarge screen is approximately 720x960 dp units. In most cases, devices with extra large screens would be too large to carry in a pocket and would most likely be tablet-style devices. Added in API level 9.

see more infos here: http://developer.android.com/guide/topics/resources/providing-resources.html#ResourceTypes

Answer 3

Google provide good article how to support multiple screens

http://developer.android.com/guide/practices/screens_support.html

General advices:

use layout - for for mobile phone layouts
use layout-sw600dp folder for 7inch tablets layouts
use layout-sw720dp folder for 10inch tablets layouts

use dimens.xml in values folder to define dimentions for your UI
you also can use values-sw600dp and values-sw720dp with its own dimens.xml file for 7 and 10 inch tablets

Answer 4

Writing apps for multiple devices requires one to have good knowledge on basic concepts like : what is Dpi, Screen density , Orientation etc.

Article below is good place to start for:

Supporting Multiple Screens http://developer.android.com/guide/practices/screens_support.html