如何为相同的 DPI 存储桶设备创建自定义维度文件？

Question

I am writing an Android game and I am testing it in two devices at the same time:

• Huawei P10 Lite : 5.2", 1920x1080, 424dpi, xhdpi.
• Huawei P40 Pro : 6.58", 2640x1200, 441dpi, xhdpi.

These two devices are utterly different, as they differ in screen size and resolution , but NOT in dpi and dpi bucket; both are xhdpi .

That means regardless the dimen files I create (dimen-mdpi, dimen-hdpi...), any graphic element looks the same in both phones, which completely breaks the layout and proportions in the small phone .

I'm taking this as a reference for bucket classification:

Answer 1

Well dpi is all about resolution, and not screen size. If you want to create resources for screen sizes, and not screen resolutions, you should use smalest width qualifiers .

According to the docs:

One DIP is one pixel on an approximately 160 dpi screen (for example a 240x320, 1.5"x2" screen), providing the baseline of the system's display. Thus on a 160dpi screen this density value will be 1; on a 120 dpi screen it would be.75; etc.

So if I understand correctly, you would convert from pixel to dp by: pixelSize / dip / 160 . In this case the formula for your device width in dp is as follows: deviceWidthInPixels / (deviceDip / 160) .

• P10 width in dp : 1080 / (424 / 160) = 407.54
• P40 width in dp : 1200 / (441 / 160) = 435.37

Looks like other people also came to this conclusion