Different Layouts To Support Different Screens In Android

When I use different layouts to support different screens , should I use dp or px .

Solution 1:

Always use dp instead of px. There are three distinct but linked concepts to understand here: screen density (pixels per inch/centimeter, or commonly known as DPI from dots per inch in printers), physical screen size (in inches or centimeters) and number of pixels (also known as resolution, in pixels).

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Solution 2:

dp is best because it adjust itself according to the screen size of the device.It varies from device to device but less then pixel.So, always go for dp.