| Density | DPI | Example Device | Scale | Pixels |
|---|---|---|---|---|
| ldpi | 120 | Galaxy Y | 0.75x | 1dp = 0.75px |
| mdpi | 160 | Galaxy Tab | 1.0x | 1dp = 1px |
| hdpi | 240 | Galaxy S II | 1.5x | 1dp = 1.5px |
| xhdpi | 320 | Nexus 4 | 2.0x | 1dp = 2px |
| xxhdpi | 480 | Nexus 5 | 3.0x | 1dp = 3px |
| xxxhdpi | 640 | Nexus 6 | 4.0x | 1dp = 4px |
https://guides.codepath.com/android/Working-with-the-ImageView
原文：https://www.cnblogs.com/onelikeone/p/9311873.html