Android Question Dip dpi %x %y

[Stern0m1]

Im confused abour dip,dpi, %x %y. Not sure if really get what this means. Is there a good tutorial (for dummies!) somewhere?

Thanks

 

[eurojam]

you can start here for example: https://www.b4x.com/android/forum/threads/supporting-multiple-screens-tips-and-best-practices.17647/

 

[klaus]

dpi dots per inch number of pixels per inch

dip density insependant pixels pixels with Android standard density of 160dpi
If you set Widht = 160 the physical size on the screen would be:
about 1 inch on a device with a density of 160dpi
about 0.75 inch on a device with a density of 240dpi
about 0.5 inch on a device with a density of 320dpi
If you set Width = 160dip the physical size would be:
about 1 inch on a device with a density of 160dpi
about 1 inch on a device with a density of 240dpi
about 1 inch on a device with a density of 320dpi

%x percent of the screen width
100%x = whole screen width
50%x = middle of screen horizontally on any device, independant of its size and resolution.
%y percent of the screen height
100%y = whole available screen height, screen height minus height of the top bars.
50%y = middle of screen vertically on any device, independant of its size and resolution.
If you turn the device %x and %y will change.

You may have a look at chapter 5 Screen sizes and resolutions in the B4A Beginner's Guide.

 

[Stern0m1]

Are font sizes a percent of the screen or dip?
Thanks

 

[klaus]

None of both.
Font sizes are expressed in points 1/72 of an inch.
Independant of screen size and resolution.
AutoScale in the Designer Scripts adjusts the font size according to the screen size and AutoScaleRate.