I don't know about that. 2 years ago, when I was first trying my hand at iOS development, I found it remarkably easy to get things working. The documentation, to my eyes, was simply excellent. I still find that to be the case.
But I will agree Google's documentation is usually pretty short sighted and made by people that don't like writing documentation.
That said, the quality of the Android documentation has vastly improved since then. The training guides are excellent and the design section is good (although I much prefer the more practical Android Design in Action Youtube series).