Nexus 5X uses incorrect dimens bucket

Question

From Nexus 5X spec it has 411x731 dp screen size.

How I understand that:

If I want recycler view with 2 column in portrait mode I should define column_count value in dimens.xml

<integer name="column_count">2</integer>

If I want recycler view with 3 column in landscape I should define column_count value = 3 in w-720dp dimens.xml. But it does not work. Recycler view has only 2 column.

But if define column_count value = 3 in w-600dp dimens.xml it works.

I don't understand why my nexus 5X uses values from w-600dp bucket in landscape while it has 731 dp screen width when in landscape.

Thank You!

Honestly, the value listed there for this specific device seems wrong, just based on the other devices listed. — Karakuri, Oct 15 '16 at 00:29

score 0 · Accepted Answer · answered Oct 15 '16 at 00:27

0

For an mdpi device 1dp = 1px, and mdpi corresponds to 160 lcd density. The Nexus 5x has an lcd density of 480 (as specified in /system/build.prop), so on that device 1dp = 3px (because 480/160 = 3). The screen dimensions are 1920x1080 pixels, so divide by 3 and you get 640x360 dp (or 360x640 dp in landscape). Seems to me the device is acting perfectly fine.

Generally speaking, -w720 or -sw720 matches large tablets, and -w600 or -sw600 matches smaller tablets (and sometimes very large phones).

answered Oct 15 '16 at 00:27

Karakuri

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Thank you for explanation! But what is 411x731 dp value from design.google.com/devices? – bitvale Oct 15 '16 at 00:35
@jQuick No idea. Maybe someone put the wrong value on that page? – Karakuri Oct 15 '16 at 00:49

Nexus 5X uses incorrect dimens bucket

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