Q:

Android Canvas Drawline method - what units and where is it documented?

I'm writing some code that needs to draw some Canvas class drawing primitives consistently on devices with many different DPI's and screen resolutions.    But I can't seem to find what units the drawLine() method's points are in.
It doesn't say in the canvas class documentation:
http://developer.android.com/reference/android/graphics/Canvas.html#drawLine(float, float, float, float, android.graphics.Paint)
On S.O. This poster thinks it's in px:
how to draw lines with drawLine method in multiple density screens
... and the answerer to this S.O. question did some experiments and determined that the units varied according to a setting in the manifest!
I also looked in Google's Canvas and Drawables documentation and the word "units" doesn't even appear there. 
What units are the canvas drawing primitives like drawLine() in and where does Google/Android officially document this?

A:

It's pixels. As with all the Canvas graphical functions (drawXYZ()).
Reference: http://developer.android.com/reference/android/graphics/Canvas.html
Mostly because it's all about drawing on a Bitmap.
And a Bitmap  measure unit is the pixel.

