The answer is already given by user5594218 but looks like you are still unclear. (maybe you are beginner)
So, here is the step by step guideline
Solution 1: (short and simple)
-
Navigate to
app > src > main > res
-
Duplicate layout directory by copying and pasting
-
Rename duplicated Directories e.g
layout-sw300dp
Solution 2: (bit lengthy)
- Create new resource directory:
res > New > Android resource directory
-
Select
Resource Type
aslayout
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Add
sw<N>dp
in Directory name e.glayout-sw300dp
and Hit OK
-
Navigate to
app > src > main > res
-
Copy layouts XML file inside new directory
//repeat process for other qualifiers
List of Qualifiers to support all screens:
- layout-sw300dp
- layout-sw330dp
- layout-sw480dp
- layout-sw600dp
- layout-sw720dp
Testing:
This is how it gonna look like, if you did it right.
For more detail and examples, check: Android Application Development All-in-One For Dummies