Question: I have **Galaxy tab 10.1 inch**  and I have made app and test on it, it works fine.

Now my question is will this app work on Galaxy 7 inch, Galaxy 7.7 inch, Galaxy note and Galaxy 8.9 inch 

here is the details of these devices:

 **(My Device) Galaxy tab 10.1 inch -->** 800 x 1280 pixels, 10.1 inches (~149 ppi pixel density)

**Galaxy 8.9 inch**--> 800 x 1280 pixels, 8.9 inches (~170 ppi pixel density)

**Galaxy 7.7 inch** --> 800 x 1280 pixels, 7.7 inches (~196 ppi pixel density)

**Galaxy 7 inch** --> 600 x 1024 pixels, 7.0 inches (~170 ppi pixel density)

**Galaxy Note** --> 800 x 1280 pixels, 5.3 inches (~285 ppi pixel density)

Please tell me for which device I have to make layouts again and what will be the folder names for drawable and layout

Answer: 
for Galaxy 7 inch --> 600 x 1024 pixels, 7.0 inches (~170 ppi pixel density) you can make layout folder with name "layout-large-mdpi-1024x600"....but for other device i am also unable to sort correct
Found answer myself: In order to support maximum devices, we can try to make a general layout which fits for all device, there may be minor trade offs, but one can live with that. We can make such a layout by using Relative Layout as much as possible, if there comes a situation where you can not handle multiple device support, we can try handling it with code at run time, but in such a manner, that it runs on all device.

complete answer is here
[Layout for 720\*1280 devices](https://stackoverflow.com/questions/13660452/layout-for-7201280-devices/13660963#13660963)