@Romain: thanks for your reply...I'd *like* to believe that you wrote FingerPaint and would help me here :)
Most of the applications in the Android Market(PicSay et al.) that provide a similar feature(drawing strokes on canvas) provide Undo functionality. I was trying to imitate the same in the original FingerPaint app. My approach to implementing this feature,as already mentioned in the earlier post, would be to: 1. memorize all the paths, 2. reset the canvas and 3. redraw all the paths again expect the last one. I was wondering if there was any alternative to this? Is there any class in the framework that can help me here? Please help. Thanks again! On Oct 7, 9:34 pm, Romain Guy <[email protected]> wrote: > save() and restore() are just used to save the state of the Canvas > (translate, scale, etc.) It won't help you for what you want. > > > > > > On Wed, Oct 7, 2009 at 12:26 AM, Samuh Varta <[email protected]> wrote: > > I am playing with the FingerPaint application that comes bundled with the > > API demos package. I was wondering if I could add an "Undo" feature to it, > > which would allow the user to remove/undo his latest stroke drawing from the > > canvas. I am not sure of how to achieve this though. > > > I was looking at the android.graphics.Canvas class and therein I found a few > > methods that caught my interest. > > canvas.restore() and canvas.save(). But I couldn't get them to work per my > > requirement. > > > One of the approach could be memorizing all the Path(representing strokes > > drawn) and then resetting the canvas and reapinting all the stroked one by > > one except the latest. I somehow dont like this approach. > > How do I undo my drawings on canvas? > > Please help. > > > Thanks. > > -- > Romain Guy > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time > to provide private support. All such questions should be posted on > public forums, where I and others can see and answer them- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
