Some questions about images.

Questions & Answers
1

  1. How do you set the image size when creating a 2d mobile game?
    Do you set a single target resolution and create an image with a 1: 1 equivalent size?
    ex) target resolution : 320 x 480, button icon size : 32 x 32 (The desired size on the actual screen)
    target resolution : 640 x 960, button icon size : 64 x 64 (Resolution is doubled, so size is doubled)

  2. Does the capacity of image seen on Unity apply to the installed capacity of the app?
    For example, when i build a single apk file, the install size is 70mb.
    And if I build an apk file by adding a 1mb image, will the app install size be 71mb?

2

Hi @Mun-Yeong-Seok

The issue here is that Unity Supports many different mobile sizes. Each with it’s own resolution and Dots Per Inch (DPI).

That’s why a 60x60 icon may look smaller on a retina screen than a lower res screen.

Also due to dpi if you define your button to render 10px from the left of the screen it will look different across different devices (due to the dpi).

The way Unity handles this is using anchoring.
https://docs.unity3d.com/Manual/UIBasicLayout.html