How to obtain the exact dpi value of android device?

问题

we can use DisplayMetrics.densityDpi to obtain a approximate dpi value of the device,but i eager to know how to obtain the exact dpi value?

回答1:

Use DisplayMatrics.xdpi and DisplayMatrics.ydpi

xdpi    The exact physical pixels per inch of the screen in the X dimension.
ydpi    The exact physical pixels per inch of the screen in the Y dimension.

getResources().getDisplayMetrics().xdpi
getResources().getDisplayMetrics().ydpi

回答2:

I think you can accesss this through the class DisplayMetrics and the field densityDpi.

来源：https://stackoverflow.com/questions/7594527/how-to-obtain-the-exact-dpi-value-of-android-device