Develop Reference

Displaying views according to screen size

When you are displaying views according to dp scale, it means that they are displayed the same physical size at any device... Which means that the display might seem a little emptier at bigger screens right?
Then How do you display views according to the screen sizes?

For different screen size, Use different Layout and different image
This linke is good Supporting Multiple Screens | Android Developers
res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-small/my_layout.xml // layout for small screen size
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra large in landscape orientation
res/drawable-mdpi/my_icon.png // bitmap for medium density
res/drawable-hdpi/my_icon.png // bitmap for high density
res/drawable-xhdpi/my_icon.png // bitmap for extra high density

How to set dimensions for different Screens in Android development

I am new to the Android development environment.
I would like to have my app designed for multiple phone screen sizes and resolutions.
If the design for all the screens remain the same, will I be able to use one XML layout for the design with the dimensions specified in "dp" and "sp".
Will android automatically scale the dimensions and font sizes for each phones(ldpi, mdpi, hdpi, xdpi, xxdpi, xxxdpi) automatically? Or do I have to create separate layout files for each of them with the respective dp/sp values?
Also, I hope if I put images for each dip in their respective folders, android would pick it up by itself.

Create layouts for screens like this:
res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra-large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra-large in landscape orientation
res/drawable-mdpi/graphic.png // bitmap for medium-density
res/drawable-hdpi/graphic.png // bitmap for high-density
res/drawable-xhdpi/graphic.png // bitmap for extra-high-density
res/drawable-xxhdpi/graphic.png // bitmap for extra-extra-high-density

android -notlong eclipse: "Invalid resource directory name"

I try to refactor/rename my layout/large forlder to
layout-xlarge-mdpi-notlong
Then Eclipse return this error
Invalid resource directory name
I really don't understand why.

res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-small/my_layout.xml // layout for small screen size
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra large in landscape orientation
res/drawable-mdpi/my_icon.png // bitmap for medium density
res/drawable-hdpi/my_icon.png // bitmap for high density
res/drawable-xhdpi/my_icon.png // bitmap for extra high density
Supporting Multiple Screens
because -mdpi-notlong is not supported in android.

You can not rename the name of resource folders the way you want. Android keeps it standard. You should read this link.http://developer.android.com/guide/topics/resources/providing-resources.html

layout for multiple DPI and SIZE screens in android

how am i refer a layout in res library for differnt screens (DPI and SIZE)?
can i do this in re folder:
layout-mdpi-xlarge
layout-mdpi-normal
layout-xhdpi-large
and so on...

http://developer.android.com/guide/practices/screens_support.html
You can find an answer to your question by going through the link in detail.
See the topic under Using configuration qualifiers especially the section under table1.
res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-small/my_layout.xml // layout for small screen size
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra large in landscape orientation
For drawables.
res/drawable-mdpi/my_icon.png // bitmap for medium density
res/drawable-hdpi/my_icon.png // bitmap for high density
res/drawable-xhdpi/my_icon.png // bitmap for extra high density

Override layout of "layout" folder for normal screen device

I implemented all layout files for hdpi devices. And put them in "layout" forder. Now I tested on a normal-screen device, and there's some screen I urgently need to change, because a required input field doesn't appear (because of the small screen).
What I did is create a folder called "layout-normal" and put there a copy of my layout file, and reduce in the copy everything a bit so it fits the screen. Now I have 2 problems and don't understand anything.
Both files point to the same source - when I open them I don't get 2 files, but only 1 with my modifications.
Ran this on the normal-screen device and it still looks like at the beginning.
Please help :/

layout-normal and just layout are the same. It is just the default layout
Ref: android developers site
res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-small/my_layout.xml // layout for small screen size
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra large in landscape orientation
res/drawable-mdpi/my_icon.png // bitmap for medium density
res/drawable-hdpi/my_icon.png // bitmap for high density
res/drawable-xhdpi/my_icon.png // bitmap for extra high density
..
Size small Resources for small size screens.
normal Resources for normal size screens. (This is the baseline size.)
large Resources for large size screens.
xlarge Resources for extra large size screens.