I would recommend using a custom view class that extends ImageView, with the scaleType set to Matrix. You can then implement a custom OnTouchHandler (override the onTouch event in your custom view) and use this to alter the position of the image using myView.setImageMatrix(matrix). This will allow you to pan/ drag the image, and even implement pinch-zoom.
e.g. For a drag you'll want to change the matrix using matrix.postTranslate(dx, dy) - there's an article on ZDNet about multi- touch (you can ignore the pinch-zoom bits if you'd like) that gives a better idea of how to use a Matrix to translate/scale an image. I'd recommend using http://code.google.com/p/android-multitouch-controller/ to make your life easier, even if you don't implement pinch-zoom. I tried the WebView method in an application I a developing and rejected it for several reasons: 1) Performance is poor compared to the custom view method. Loading a WebView incurs a lot of overhead for the simple task of displaying an image 2) Repeat calls to setData in a short period of time seem to fail without error, at least in combination with a ContentProvider (I was displaying images from the SD card). In my program this mean if a user quickly changed the image to be displayed, sometimes just a white page would be displayed. 3) You don't get any fine control over your image. Although it will take longer (give yourself a few days to get a really good implementation working) I really would recommend the custom view and MultiTouchController - you don't have to implement pinch zoom if you don't want. If you do go this way and want pinch-zoom let me know, as I have a modification to Luke Hutch's code which enables multi-touch on stock Android 1.5 (and possibly 1.6 devices - have not tested yet) meaning you can have pinch-zoom on pretty much any phone. Regards, Joe On Jul 14, 12:07 am, Tommy <[email protected]> wrote: > Hi everyone, > > I have animagethat I want to be able to displayfullsizebut when I > place it in my imageview it scales. I would like it to > displayfullsizewithscrollbars. Is there a way I can make my main view that > theimageview is in havescrollbars vertical and horizontal or how can I > do this. The images are local on the SD card. I would really like to > get the same effect that the webview offers if i were to look at > theseimagefrom a URL. > > Thanks for your help, > > Tommy -- 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
