不同的DPI屏幕分辨率（PIXELS）

Question

i just wanted to know. i've read about this DPIs and i wandered all of the varieties. since i am new to this, i need some knowledge and i hope someone can help me out. so far i've seen LDPI, MDPI, HDPI, XHDPI, XXHDPI, XXXHDPI.

is there any other DPI variety other than this. and what is their respective resolutions ?. like as for qHD = 960 x 540 etc etc. i hope you understand guys, thanks.

please forgive me if my grammar is a little crappy, as english is not my native language

Answer 1

Android supports different screen resolutions

ldpi (low) ~120dpi
mdpi (medium) ~160dpi
hdpi (high) ~240dpi
xhdpi (extra-high) ~320dpi
xxhdpi (extra-extra-high) ~480dpi
xxxhdpi (extra-extra-extra-high) ~640dpi

1 dpi = 1 design independent pixel

ldpi device have 120 pixels in 1 inch size.

same for other densities...

we as programmer should use this conversion formulae :

pixel = dp * (density / 160)

so 240 dpi hdpi device's 1 dp will have = 1 * (240/160) = 3/2 = 1.5 pixels

and 240 dpi xxhdpi device's 1 dp will have = 1 * (480/160) = 3 pixels

Using this 1.5 and 3 pixels knowledge, programmer can design layouts for different densities