Hi Scott. Thanks for great tips.
I've changed my code and not using Gestures any more, just onTouch method and handling ACTION_MOVE motion. It's good up to this point. However, can you give a little sample code about blting a bitmap to surface? How can I do this? Thanks On Nov 12, 8:18 pm, "SoftwareForMe.com SoftwareForMe.com" <[email protected]> wrote: > * Skip the gesture detector, just handle the touch events yourself > * Do not create a new bitmap. Load it once and blt from it to the surface > * Background thread should wait on some object to be notified by UI thread > when new x/y scroll is available, then draw > > We use this approach in PhoneMyPC and have very responsive scrolling of > quite large images. > > Scott > SoftwareForMe.com > > > > On Thu, Nov 12, 2009 at 7:58 AM, Genc <[email protected]> wrote: > > Hi all, > > > For a project, I'm displaying an image with sizes 800 x 600 and I've > > implemented my custom scrolling (horizontal and vertical) - which is > > works fine. However, my problem is that it's not fast enough. If you > > continuously move your finger on screen for instance, scrolling is not > > responding fast enough. There is a lag and you need to wait (say > > 400-500ms) for new scrolled image to be loaded. > > > Now below I described how I implemented scrolling and my question is > > that > > > - How can I make it faster, if possible > > - Is there any other better way to implement this. > > > Thanks in advance!! > > > -------------------------------------------------------- > > > My custom scrolling solution: > > > * I have a Main activity, SurfaceView and a thread > > * In main activity, I'm using GestureDetector and override onScroll > > method. > > * In onScroll method of activity, I'm passing values to SurfaceView's > > "handleScrolling" method. > > * In "handleScrolling" method, I'm calculating proper values and using > > "newImage = Bitmap.createBitmap(myImage, starX, stopY, SCREEN_WIDTH, > > SCREEN_HEIGHT)"; to create a new, "scrolled" image. > > > * Then in thread loop, I'm drawing this "newImage" to canvas. > > > Hope this much info helps. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-developers%[email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > Warm regards, > The PhoneMyPC Team -- You received this message because you are subscribed to the Google Groups "Android Developers" 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-developers?hl=en
