should help you out You didn't explain your goal very well, but I presume you want the "wrap-around" to be on a per-line basis. So, the n pixels at the left of each line should end up flowing to the right of the line instead. Just shifting the bytes around the whole image, you will instead end up with those bytes on the previous line, because the bytes are in a 1D sequence and you didn't build in any logic to pay heed to the notional "width" of your image.
With these it helps When there is only a simple transform set on Canvas (a simple transform = translate only, no rotate, no scale), Skia, Android's 2D rendering library, aligns bitmaps to the pixel grid. This means that a move by less than 1 pixel might not be visible at all. A silly workaround is to set a very, very small scale or rotate transform on Canvas before drawing your bitmap. This has the side effect of not snapping bitmaps to the pixel grid. I think I should just add a new API on Paint to let apps do subpixel positioning of bitmaps no matter what transform is set.
What is the difference between directly assigning the result of left shift operation to a variable and the left shift as