Pixel, resolution, screen size (screen must SEE)

Brief introduction:

Always understand the common units in Android is not very thorough, share under today. What's not in place, welcome to point out

Meaning:

1, Screen Size: Physical size (cell phone diagonal size, such as 4.7, 5, 5.5 inches of mobile phones)

2. Density (dpi): the pixels shown per inch

3, Pixel (px): The size measured on the real screen

4, DP: screen width and px of a ratio, on the large-screen mobile phone corresponding to the PX, small screen corresponding px less

Chart:

It's easy to understand the relationship between pixels, resolution, density

Ratio (ratio of various screen densities):

ldpi:mdpi:hdpi:xhdpi:xxhdpi:xxxdpi = 0.75:1:1.5:2:3:4 = 3:4:6:8:12:16

Find a pattern, that is, this ratio multiplied by 12 to get the corresponding screen density mobile desktop icon icon size, see the table above

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Pixel, resolution, screen size (screen must SEE)