Lags / wrong y-coordinates at scrolling the RecyclerView (OnscrollListener)

[iFoukis]

i'm struggling with a lag-problem with the RecyclerView.OnscrollListener and the onscrolled-Method. (I want to hide the Toolbar/Actionbar when i scroll the list - WITHOUT Coordinator-Layout)

(This is an excerpt from my Stackoverflow-post: http://stackoverflow.com/questions/34773595/lags-wrong-y-coordinates-at-scrolling-the-recyclerview-onscrolllistener)

The numbers which i receive from the onScrolled-Method are correct when i scroll "fast". But when i'm scrolling my list slowly, i receive some "jumps" in the y-axis.

Is this a known issue or am i doing something wrong? Does anyone have some experience with that?

The log that i get (where u can see the jumps) in my Android Studio is:

01-13 17:21:33.611 D/Ilias: Offset: 0 *** dx: 0 *** dy: 9 *** totalScrolled: 0
01-13 17:21:33.631 D/Ilias: Offset: 9 *** dx: 0 *** dy: 28 *** totalScrolled: 9
01-13 17:21:33.641 D/Ilias: Offset: 37 *** dx: 0 *** dy: -5 *** totalScrolled: 37
01-13 17:21:33.691 D/Ilias: Offset: 32 *** dx: 0 *** dy: -22 *** totalScrolled: 32
01-13 17:21:33.701 D/Ilias: Offset: 10 *** dx: 0 *** dy: 10 *** totalScrolled: 10
01-13 17:21:33.711 D/Ilias: Offset: 20 *** dx: 0 *** dy: 29 *** totalScrolled: 20
01-13 17:21:33.731 D/Ilias: Offset: 49 *** dx: 0 *** dy: -2 *** totalScrolled: 49
01-13 17:21:33.751 D/Ilias: Offset: 47 *** dx: 0 *** dy: -19 *** totalScrolled: 47
01-13 17:21:33.761 D/Ilias: Offset: 28 *** dx: 0 *** dy: 11 *** totalScrolled: 28
01-13 17:21:33.781 D/Ilias: Offset: 39 *** dx: 0 *** dy: 28 *** totalScrolled: 39
01-13 17:21:33.801 D/Ilias: Offset: 67 *** dx: 0 *** dy: -4 *** totalScrolled: 67
01-13 17:21:33.811 D/Ilias: Offset: 63 *** dx: 0 *** dy: -23 *** totalScrolled: 63
01-13 17:21:33.831 D/Ilias: Offset: 40 *** dx: 0 *** dy: 7 *** totalScrolled: 40
01-13 17:21:33.851 D/Ilias: Offset: 47 *** dx: 0 *** dy: 25 *** totalScrolled: 47
01-13 17:21:33.861 D/Ilias: Offset: 72 *** dx: 0 *** dy: -7 *** totalScrolled: 72
01-13 17:21:33.881 D/Ilias: Offset: 65 *** dx: 0 *** dy: -24 *** totalScrolled: 65
01-13 17:21:33.901 D/Ilias: Offset: 41 *** dx: 0 *** dy: 9 *** totalScrolled: 41
01-13 17:21:33.921 D/Ilias: Offset: 50 *** dx: 0 *** dy: 26 *** totalScrolled: 50
01-13 17:21:33.931 D/Ilias: Offset: 76 *** dx: 0 *** dy: -8 *** totalScrolled: 76
01-13 17:21:33.951 D/Ilias: Offset: 68 *** dx: 0 *** dy: -24 *** totalScrolled: 68
01-13 17:21:33.971 D/Ilias: Offset: 44 *** dx: 0 *** dy: 9 *** totalScrolled: 44
01-13 17:21:33.981 D/Ilias: Offset: 53 *** dx: 0 *** dy: 26 *** totalScrolled: 53
01-13 17:21:34.001 D/Ilias: Offset: 79 *** dx: 0 *** dy: -6 *** totalScrolled: 79
01-13 17:21:34.021 D/Ilias: Offset: 73 *** dx: 0 *** dy: -23 *** totalScrolled: 73
01-13 17:21:34.031 D/Ilias: Offset: 50 *** dx: 0 *** dy: 11 *** totalScrolled: 50
01-13 17:21:34.051 D/Ilias: Offset: 61 *** dx: 0 *** dy: 29 *** totalScrolled: 61
01-13 17:21:34.071 D/Ilias: Offset: 90 *** dx: 0 *** dy: -5 *** totalScrolled: 90
01-13 17:21:34.081 D/Ilias: Offset: 85 *** dx: 0 *** dy: -23 *** totalScrolled: 85
01-13 17:21:34.101 D/Ilias: Offset: 62 *** dx: 0 *** dy: 11 *** totalScrolled: 62
01-13 17:21:34.121 D/Ilias: Offset: 73 *** dx: 0 *** dy: 31 *** totalScrolled: 73
01-13 17:21:34.131 D/Ilias: Offset: 104 *** dx: 0 *** dy: -3 *** totalScrolled: 104
01-13 17:21:34.151 D/Ilias: Offset: 101 *** dx: 0 *** dy: -23 *** totalScrolled: 101
01-13 17:21:34.171 D/Ilias: Offset: 78 *** dx: 0 *** dy: 37 *** totalScrolled: 78
01-13 17:21:34.181 D/Ilias: Offset: 115 *** dx: 0 *** dy: 34 *** totalScrolled: 115
01-13 17:21:34.201 D/Ilias: Offset: 149 *** dx: 0 *** dy: 13 *** totalScrolled: 149
01-13 17:21:34.261 D/Ilias: Offset: 162 *** dx: 0 *** dy: 33 *** totalScrolled: 162
01-13 17:21:34.271 D/Ilias: Offset: 195 *** dx: 0 *** dy: 4 *** totalScrolled: 195
01-13 17:21:34.281 D/Ilias: Offset: 199 *** dx: 0 *** dy: 5 *** totalScrolled: 199
01-13 17:21:34.301 D/Ilias: Offset: 204 *** dx: 0 *** dy: 3 *** totalScrolled: 204
01-13 17:21:34.321 D/Ilias: Offset: 207 *** dx: 0 *** dy: 2 *** totalScrolled: 207
01-13 17:21:34.341 D/Ilias: Offset: 209 *** dx: 0 *** dy: 2 *** totalScrolled: 209
01-13 17:21:34.351 D/Ilias: Offset: 211 *** dx: 0 *** dy: 1 *** totalScrolled: 211

I hope u can help me.

Best,
Ilias

[iFoukis]

Ok, i found the problem.
You can find the reason in the StackOverflow-Post!

Thanks