Slow App with Background image

Question

I am making a small game for android. It is working smoothly when its working on a white background but when i want to put a background image, its becoming slower and slower. Fi

Answer 1

Background image Resolution to maintain smoothness

DPI	Size in Pixels
xxxhdpi	1280x1920
xxhdpi	960x1600
xhdpi	640x960
hdpi	480x800
mdpi	320x480
ldpi	240x320

You need to use background pictures matching the resolution as above to avoid lagging or being slow down.!

If you use high resolution images which exceeds the above restrictions would actually cause this issue and it's advisable to use only png