Why do we use canvas.save or canvas.restore?

Question

I know what he is doing. If I do not use sometimes, I see a difference in alignments, sometimes I do not. My question is: if canvas.restore restores the state that precedes when it was saved, why aren’t the changes made after the save, and before the restoration is canceled? Changes remain. Why?

Answer 1

canvas.save and canvas.restore actions such as rotation and translation. They do not cancel the drawing on the canvas. Android canvas works similarly to HTML5 canvas, so you can see https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Canvas_tutorial/Transformations if you need more clarification.