android - Can someone help me visualize this example about different screens sizes? -

I have always had difficulty supporting multiple screens on Android and fully understanding the concepts like DPI. To begin with another study from the beginning, I saw this example in the following:

A feature which is independent of each other's screen size and density of the defined device. For, a WVGA high density screen is considered as a normal size screen because its physical size is T-Mobile G1 (the first device on Android and baseline screen configuration) . On the other hand, a WVGA moderate density screen is considered as a large screen , although it provides the same resolution (the same number of pixels), however, the WVGA medium- The density screen is low in the density of the screen, which means that each pixel is physically larger and thus, the whole screen is bigger than the baseline (normal size) screen. In these two devices I the same resolution and the same physical Size , but different density .

If they have different density and same physical size , they do not have different proposals different Number of physical pixels ?

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Can anyone attract illustration for such concepts?

Thank you.

With 1600+ Android models, even after some class sizes are classified and some DPI layouts It is very difficult to manage .. I recommend that you focus only on preparing the layout in the screen size and then make the recycled view visible for the density effects