Android - 常用图标大小

记住： 缩放比例 + Baseline列相关图标的大小 ，就能其算出其他图标大小

	MDPI (Baseline)	HDPI	XHDPI	XXHDPI	XXXHDPI
Scale	1 x	1.5 x	2 x	3 x	4 x
DPI	~ 160 dpi	~ 240 dpi	~ 320 dpi	~ 480 dpi	~ 640 dpi
App Launcher Icons	48 px	72 px	96 px	144 px	192 px
Action bar Icons	32 px (24px inset)	48 px	64 px	96 px	128 px
Small / Contextual Icons	16 px (12px inset)	24 px	32 px	48 px	64 px
Notification Icons	24 px (22px inset)	36 px	48 px	72 px	96 px

Android - 常用图标大小

Launcher icons (.Png)

LDPI should be 36 x 36.(可以不考虑)

MDPI should be 48 x 48.

TVDPI should be 64 x 64.

HDPI should be 72 x 72.

XHDPI should be 96 x 96.

XXHDPI should be 144 x 144.

XXXHDPI should be 192 x 192.

512 × 512 (Google Play store) （国内部分应用商店上架应用图标大小要求）

Action bar, Dialog & Tab icons

24 × 24 area in 32 × 32 (mdpi)
36 × 36 area in 48 × 48 (hdpi)
48 × 48 area in 64 × 64 (xhdpi)
72 × 72 area in 96 × 96 (xxhdpi)
96 × 96 area in 128 × 128 (xxxhdpi)*

Notification icons

22 × 22 area in 24 × 24 (mdpi)
33 × 33 area in 36 × 36 (hdpi)
44 × 44 area in 48 × 48 (xhdpi)
66 × 66 area in 72 × 72 (xxhdpi)
88 × 88 area in 96 × 96 (xxxhdpi)*

Small Contextual Icons

16 × 16 (mdpi)
24 × 24 (hdpi)
32 × 32 (xhdpi)
48 × 48 (xxhdpi)
64 × 64 (xxxhdpi)